BillionToOne jobs in Union City, CA

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are seeking a Data Entry Associate (Temporary) to provide critical operational support within BillionToOne's Client Services organization. This individual will be responsible for accurately and efficiently entering and verifying patient and order data. The ideal candidate is detail-oriented, thrives in a structured and fast-paced environment, and takes pride in precision and consistency. This is an onsite position located at our state-of-the-art, 90,000-square-foot facility in Union City, CA, reporting to the Client Services Manager. Working hours: Monday-Friday, 8:00 AM - 5:00 PM PT Responsibilities: Perform accurate and timely data entry of 100-150 patient test requisitions per day into company systems Review requisition forms for completeness, accuracy, and compliance prior to entry Enter patient demographic, clinical, and order information into LIMS and CRM (Salesforce, Zendesk, etc.) systems Identify missing or inconsistent information and flag for follow-up or escalation Maintain strict adherence to HIPAA and internal data protection standards, ensuring confidentiality of all patient and client information Collaborate with Client Services, Billing, and Operations teams to resolve discrepancies or missing information Support data audits, process documentation, and other projects as needed Adhere to company policies, procedures, and deadlines while demonstrating initiative and flexibility in handling evolving tasks and priorities Qualifications: High school diploma or equivalent required; associate's or bachelor's degree preferred 1+ year of experience in data entry, administrative, or clerical roles (healthcare or laboratory experience a plus) Proven ability to process high volumes of data with accuracy and speed Proficiency in Microsoft Excel, Google Sheets, or similar tools Familiarity with CRM or LIMS systems is a plus Excellent attention to detail and organizational skills Strong written and verbal communication abilities Ability to work independently while meeting productivity and quality standards Preferred Qualifications: Experience handling medical or laboratory requisitions or patient data. Understanding of HIPAA regulations and data privacy best practices. Comfort working in a high-volume, deadline-driven operational environment. Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients The ability to indirectly or directly change the lives of hundreds of thousands patients Retirement savings program including a 4% Company match Latest and greatest hardware (laptop, lab equipment, facilities) Free daily on-site lunches provided from top eateries A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of (1) competitive base pay and (2) the opportunity for professional growth. For this position, the base pay rate is $22.78 per hour. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our Privacy Policy. About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

As the Director of Quality, you will be responsible for leading operational quality initiatives that directly support our CLIA-certified laboratory operations. You will drive continuous improvement efforts focused on reducing nonconformances, minimizing deviations, optimizing receiving inspection processes, and implementing robust supplier controls. This role requires a hands-on leader who can work cross-functionally with Lab Operations, Supply Chain, R&D, and other stakeholders to enhance the operational effectiveness of our quality systems. This role is an onsite role in Union City, CA and will report directly to the Vice President of QARA. Responsibilities: * Lead and execute operational quality programs including incident management, material management, supplier management, trending/monitoring, and compliance * Drive continuous improvement initiatives by conducting root cause analyses, implementing corrective actions, and optimizing processes to reduce nonconformances and enhance laboratory efficiency * Partner directly with Lab Operations, Supply Chain, R&D, and other stakeholders to solve problems and embed quality into daily workflows * Serve as subject matter expert for operational quality matters; personally lead critical investigations and improvement projects as needed * Driving systematic reduction of quality issues through root cause analysis, trend identification, and implementation of sustainable corrective actions * Establishing and tracking operational quality metrics (NCR, CAPA, Change Control, Preventive Maintenance, etc.) to drive data-driven decision making * Developing risk-based receiving inspection protocols that balance quality assurance with operational efficiency * Establishing acceptance criteria and sampling plans for incoming materials, reagents, and consumables * Ensuring laboratory quality systems operate effectively to support daily operations * Supporting regulatory inspections (CAP, CLIA, state agencies) with a focus on operational readiness * Build and develop a high-performing operational quality team; provide hands-on coaching, establish performance standards, and foster a culture of accountability and continuous improvement * Mentoring team members on quality principles, regulatory requirements, and effective investigation techniques * Drive standardization of operational quality processes across laboratory locations (as applicable) * Support quality risk assessments for operational changes and new products * Completes other duties as assigned Qualifications: * 8+ years quality leadership experience in a CLIA-certified laboratory environment with demonstrated ability to lead and manage people and teams * Deep understanding of CLIA, CAP, state laboratory regulations (including NYS Clinical Lab requirements) * Proven track record of successfully reducing quality issues through systematic improvement initiatives * Hands-on experience with supplier quality management, including qualification, auditing, and corrective action management * Experience implementing or optimizing quality processes in a regulated laboratory setting * Strong analytical skills with ability to analyze quality data, identify trends, and develop data-driven solutions * Demonstrated ability to work cross-functionally and influence without direct authority * Ability to work independently and cross-functionally to provide effective updates at executive level * Detail-oriented with well-developed organizational and problem-solving skills * Proven ability to communicate effectively both in writing and verbally with staff at all levels * Hard driver with high energy, positive attitude, and ability to thrive in a fast-paced environment Nice-to-Haves: * ISO 13485 quality system experience a plus * Six Sigma certification (Green Belt or Black Belt) * Familiarity with FDA regulations for IVDs * Background in prenatal testing, oncology diagnostics, or companion diagnostics * Exposure to GMP or GLP environments (pharma, device manufacturing, or clinical trials) Benefits And Perks: * Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients * Open, transparent culture that includes weekly Town Hall meetings * The ability to indirectly or directly change the lives of hundreds of thousands patients * Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% * Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) * Supplemental fertility benefits coverage * Retirement savings program including a 4% Company match * Increase paid time off with increased tenure * Latest and greatest hardware (laptop, lab equipment, facilities) * Free daily on-site lunches provided from top eateries * A variety of perks on campus (state of the art gym, restaurant) * Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of $390,122 per year, including a base pay range of $216,481 - $237,601 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

We are looking for a driven Lead Clinical Laboratory Scientist (with California Clinical Laboratory Scientist License) to support UNITY, the only non-invasive prenatal test (NIPT) that can detect inherited disorders such as sickle cell disease, spinal muscular atrophy, and cystic fibrosis in the baby directly from maternal blood. These disorders are extremely severe, but early detection and intervention can significantly improve outcomes. You will join and oversee our growing superstar CLIA team responsible for end-to-end processing of pregnancy blood samples in a high complexity, high-growth CLIA setting. The Lead Clinical Laboratory Scientist is an onsite position for Tu-Sa PM shift. Shift Hours: Tu-Sa PM * Weekday PM, 20% * Weekend PM, 25% Responsibilities: * Lead clinical laboratory daily supervision in alignment with company values and mission * Hold General Supervisor delegation and responsibilities including oversight and support of day-to-day operations, scheduling, and troubleshooting * Manage CLIA direct reports including licensed and/or unlicensed staff (CLS, Clinical Laboratory Assistants) * Contribute to continuous process improvement projects including tech transfer, troubleshooting, training, and validations * Perform clinical laboratory assays to provide data for diagnosis, treatment, and prevention of disease * Perform quality control studies to ensure the accuracy of clinical data * Verify instrument performance by checking and calibrating specific lab instruments and documents data Qualifications: * Bachelor's degree in the chemical, physical or biological sciences * Minimum of 4 years of CLS experience in a clinical setting (molecular and/or high-complexity laboratory experience preferred) * A current California Clinical Laboratory Scientist License that meets requirements for Testing Personnel under CLIA regulations (42 CFR, part 493) (ASCP, CGMBS or generalist license is required) * Hands-on training and experience with manual molecular biology protocols, including DNA extraction, PCR, and automated liquid handlers * Advanced knowledge of Google Docs, Word, Excel, basic statistics and familiarity with LIMS systems and Next-Generation Sequencing * Strong attention to detail and ability to work flexibly and well under given timeframes. * Self-starter and dynamic team player with excellent verbal and written skills. Nice-To-Haves: * Previous CLIA General Supervisor experience * Start-up experience * Knowledge of medical genetics * Experience in a cell-free DNA setting Benefits And Perks: * Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients * Open, transparent culture that includes weekly Town Hall meetings * The ability to indirectly or directly change the lives of hundreds of thousands patients * Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% * Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) * Supplemental fertility benefits coverage * Retirement savings program including a 4% Company match * Increase paid time off with increased tenure * Latest and greatest hardware (laptop, lab equipment, facilities) * Free daily on-site meals provided from top eateries * Brand new onsite state of the art gym * Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of up to $228,788 per year, including an hourly rate (inclusive of shift differential) of $88.21 - $93.18 per hour. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are looking for driven contract Clinical Laboratory Scientists (with California Clinical Laboratory Scientist License) to join our team on a part-time basis (up to 20 hours per week). In this role, you will perform UNITY, the only non-invasive prenatal test (NIPT) that can detect inherited disorders such as sickle cell disease, spinal muscular atrophy, and cystic fibrosis in the baby directly from maternal blood. These disorders are extremely severe, but early detection and intervention can significantly improve outcomes. You will join our growing superstar CLIA team responsible for end-to-end processing of pregnancy blood samples in a high complexity, high-growth CLIA setting. The Clinical Laboratory Scientist is an onsite contractor position. Shift Hours: Flexible (Preferably Saturday AM/PM, Sunday AM, Monday PM) Responsibilities: Performs clinical laboratory assays to provide data for diagnosis, treatment, and prevention of disease. Performs quality control studies to ensure the accuracy of clinical data. Verifies instrument performance by checking and calibrating specific lab instruments and documents data. Contributes to troubleshooting, training, and continuous process improvement Qualifications: Bachelor's degree in the chemical, physical or biological sciences 0-2 years of CLS experience in a clinical setting A current California Clinical Laboratory Scientist License that meets requirements for Testing Personnel under CLIA regulations (42 CFR, part 493) (California, CGMBS or Generalist license is required). Advanced knowledge of Google Docs, Word, Excel, basic statistics and familiarity with LIMS systems Strong attention to detail and ability to work flexibly and well under given timeframes. Self-starter and dynamic team player with excellent verbal and written skills. Nice-To-Haves: Start-up experience Knowledge of medical genetics Experience in a cell-free DNA setting and manual molecular biology protocols Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients The ability to indirectly or directly change the lives of hundreds of thousands patients Free daily on-site lunches provided from top eateries A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) For this position, the target hourly rate is: $70 per hour. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our Privacy Policy. About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are seeking a Senior IT Desktop Support Technician with strong experience supporting end users in a fast-paced, dynamic environment. The ideal candidate will have hands-on expertise in Google Workspace, VDIs, mac OS, Kandji, Intune, and Jira Service Management, as well as a strong understanding of lab and regulated environments. This role is critical to ensuring operational excellence, leading IT support initiatives, maintaining compliance with HIPAA and security standards, and designing exceptional end-user experiences. The successful candidate will play a key role in managing IT inventory, improving support workflows, and ensuring seamless and secure IT operations across the organization. Responsibilities: Provide advanced desktop support for a diverse end-user environment, primarily focused on mac OS and Google Workspace. Manage and administer device management platforms such as VDIs, Kandji, and Microsoft Intune to maintain system security and compliance. Leverage Jira Service Management (JSM) to manage IT support workflows, automate ticket handling, and track performance metrics. Support biotech lab environments, ensuring uptime and reliability of IT systems that enable scientific operations. Implement and monitor HIPAA compliance initiatives across IT systems, safeguarding sensitive data and patient information. Design, document, and continuously optimize IT support processes to enhance service efficiency and customer satisfaction. Create and maintain comprehensive IT documentation, including system configurations, troubleshooting guides, and operational procedures. Manage the full lifecycle of IT assets and inventory, including procurement, tracking, and auditing. Collaborate cross-functionally to support new technology rollouts, system upgrades, and process improvements. Qualifications: Bachelor's degree in Computer Science, Information Technology, or a related field. 5+ years of experience in IT desktop support or a similar technical role. Proven expertise in mac OS and Google Workspace support within a professional environment. Strong proficiency with Kandji, Microsoft Intune, and Jira Service Management (JSM) - including request queues, automation rules, SLAs, and dashboards. Solid understanding of biotech lab IT environments and associated systems. Deep knowledge of HIPAA compliance and how to implement security best practices in IT operations. Demonstrated ability to create and maintain clear, high-quality documentation. Experience leading IT operations or support initiatives in a high-growth organization. Strong problem-solving skills and a focus on designing exceptional end-user experiences. Excellent communication and interpersonal skills, with the ability to collaborate across technical and non-technical teams. Nice-to-Haves: Experience configuring and automating workflows in Jira Service Management (custom forms, automation, integrations). Experience supporting CLIA-certified laboratory environments or other regulated scientific operations. Ability to plan, test, execute, and document technical projects. Experience working in biotech, healthcare, or regulated industries. Familiarity with security frameworks, incident response, and best practices for protecting sensitive data. Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients Open, transparent culture that includes weekly Town Hall meetings The ability to indirectly or directly change the lives of hundreds of thousands patients Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) Supplemental fertility benefits coverage Retirement savings program including a 4% Company match Increase paid time off with increased tenure Latest and greatest hardware (laptop, lab equipment, facilities) Free daily on-site lunches provided from top eateries A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of $143,883 per year, including a base pay range of $82,824 - $103,530 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our Privacy Policy. About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are looking for a Client Services Associate to provide exceptional service and support to BillionToOne's customers. The Client Services Associate holds a pivotal role in the organization and will act as the face of BillionToOne for our customers including physicians, OB/GYN clinics, auxiliary staff, and patients. The ideal candidate for this role is an ambitious and intelligent individual who is highly self-motivated. The Client Services Associate is an onsite position, located in our brand new, state-of-the-art, 90,000 square foot facility in Union City, CA, and will report to our Client Services Manager. Working hours are Monday - Friday, 8:00 AM to 5:00 PM PT. Responsibilities: Engage customers in a positive and courteous manner to resolve issues and deliver the best possible customer experience. Oversee and effectively respond to all types of communication in a professional and articulate manner: phone, email, and web inquiries from customers (physician offices), sales representatives, and patients. Handle a variety of inquiries, including questions about our technology, products, and services, status of test results, costs, billing, and insurance coverage. Keep precise and clear documentation of all communications and follow-up activities. Collaborate with our laboratory to ensure that client information is accurately maintained and help to ensure the timely delivery of test results. Contact physicians and other medical personnel to obtain missing information from test orders. Enter and qualify new customer information into CRM and LIMS systems. Identify issues and trends and collaborate with commercial leadership to develop best practices for internal and external processes. Participate in cross-functional projects that extend beyond routine responsibilities to contribute to building a world-class Customer Service organization. Represent the organization during intra-department meetings or All Hands meetings as needed. Qualifications: 1+ years of prior client-facing experience (diagnostic laboratory setting is a plus). 4-year college degree (or equivalent in experience). Experience with CRM tools (Salesforce, Zendesk, etc.) is a plus. Advanced organizational skills with the ability to handle multiple assignments simultaneously. Ability to work in a very fast-paced, demanding environment. Outstanding verbal, written, and presentation skills - ability to effectively tailor messages to different audiences. Passion for creating a delightful experience for internal and external customers. Ability to analyze complex situations independently and implement appropriate solutions. Nice-To-Haves: Proficiency or fluency in Spanish to effectively assist our diverse customer base and ensure a seamless patient and client experience. Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients Open, transparent culture that includes weekly Town Hall meetings The ability to indirectly or directly change the lives of hundreds of thousands patients Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) Supplemental fertility benefits coverage Retirement savings program including a 4% Company match Increase paid time off with increased tenure Latest and greatest hardware (laptop, lab equipment, facilities) Free daily on-site lunches provided from top eateries A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of (1) competitive base pay, (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of $88,812 per year, including a base pay of $73,920 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our Privacy Policy. About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are looking for a Senior Process Engineer to join our growing superstar Process Engineering team in support of clinical patient testing in our high throughput CLIA/CAP lab. The Senior Process Engineer is responsible for (1) Developing, maintaining and using process monitoring tools to continuously improve the performance of our tests, (2) Building out CLIA/CAP compliant scale-up, V&V, and tech transfer procedures, (3) Developing and validating new process and/or chemistry changes to enhance product performance, (4) Leading cross-functional efforts that integrate automation, LIMS, service engineering, and scientific R&D to enhance the operations of the CLIA lab, and (5) Serving as a mentor for junior engineers on the team. This role will enable an individual to flex their skills in process engineering, statistical analysis of large, experimental design, and data science (amongst many more). This role will help to build upon the strong technology and execution found within BTO's walls, and will help us pave the way for replicating our prenatal success in the oncology space. This is considered an onsite role and will require the majority of days to be spent in the office. Responsibilities: Develop strategies to support >3X annual growth in commercial volume Build tools and processes to enhance statistical Process Control to enable increasing assay performance and decreasing failure rates during rapid scale-up Mentor junior engineers and help to establish strong skills and industry best practices across the growing PE team Plan studies in conjunction with R&D to identify CPPs, process tolerances, and failure modes during late stage product development Work with Bioinformatics and data science to translate assay CQAs into impactful and actionable process monitoring tools Develop new data and information handling tools to aid in efficient sample processing within the clinical laboratory Source and evaluate external technologies which might benefit COGS, process throughput, assay performance, or other key operational metrics Apply six sigma, Design-for-quality, and 5S frameworks to existing or new processes to improve both capability, scalability, and quality of molecular diagnostic assays Support high throughput CLIA lab through troubleshooting instrumentation and re-qualifying instrumentation back into clinical use Identify root causes for process and instrument errors and develop long term solutions Qualifications: Bachelor's or Master's (preferred) degree in biology, bioengineering, or related sciences At least 5-6 years of experience with molecular biology techniques in a research or clinical laboratory Proficiency in R and/or python Proficiency in handling complex data sets, including back-end data wrangling, database querying, and dashboard development Strong Statistical Analysis skills Strong Experience designing rigorous, well controlled studies Experience with data presentation and technical report authoring Experience working with GMP, ISO, or equivalent highly-regulated environments, with strong knowledge of Quality Management Systems and practices. Excellent attention to detail Effective written and verbal communication skills Experience mentoring junior team members Possess logical troubleshooting skills Experience with automation or clinical laboratory experience is a bonus Nice-To-Haves: Start-up experience Experience in a cell-free DNA setting Knowledge of molecular oncology Experience with CLIA/CAP, 510K, PMA, and other regulatory requirements Experience with 6-sigma, Lean, JIT Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients Open, transparent culture that includes weekly Town Hall meetings The ability to indirectly or directly change the lives of hundreds of thousands patients Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) Supplemental fertility benefits coverage Retirement savings program including a 4% Company match Increase paid time off with increased tenure Latest and greatest hardware (laptop, lab equipment, facilities) Free daily on-site lunches provided from top eateries A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of up to $245,857 per year, including a base pay range of $126,721 - $168,961 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our Privacy Policy. About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are hiring a Vice President of Medical Affairs, Oncology to lead the execution of all medical affairs and clinical development initiatives for our oncology product line. This operationally focused leader will manage and scale the teams responsible for provider education (MSL), clinical study strategy and execution (Clinical Affairs), and data-driven insights generation (Oncology Translational Research). While the Chief Medical Officer will serve as an external-facing strategic leader, this role is responsible for running the day-to-day execution across medical and clinical functions. This is a high-impact, cross-functional leadership role that directly contributes to provider adoption, payer access, and clinical differentiation of BillionToOne's oncology diagnostics. Responsibilities: Medical Affairs Execution: Lead the MSL function to drive provider engagement, medical education, and scientific communications in support of commercial and access efforts. Clinical Development Oversight: Design and execute clinical trials that generate robust evidence for guideline inclusion, regulatory milestones, and payer coverage. Translational Research Leadership: Oversee the generation of clinically actionable insights and high-impact publications based on study and real-world data. Cross-Functional Alignment: Collaborate closely with Product, Commercial, R&D, Market Access, and Regulatory teams to ensure that medical strategy supports business outcomes. Team Leadership: Hire, mentor, and develop high-performing leaders across the medical, clinical, and translational teams. Requirements: M.D. degree required; must be a board-certified Medical Oncologist. M.D./Ph.D. strongly preferred. 5+ years of leadership experience in medical affairs and clinical development within oncology. Proven track record of designing and executing clinical studies for diagnostics and/or therapeutics. Deep knowledge of medical education, payer evidence requirements, and regulatory expectations. Exceptional scientific communication and cross-functional leadership skills. Thrives in fast-paced, entrepreneurial environments. Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients Open, transparent culture that includes weekly Town Hall meetings The ability to indirectly or directly change the lives of hundreds of thousands patients Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) Supplemental fertility benefits coverage Retirement savings program including a 4% Company match Increase paid time off with increased tenure Latest and greatest hardware (laptop, lab equipment, facilities) Free daily on-site lunches provided from top eateries A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of $588,002 per year, including a base pay range of $269,282 - $290,402 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our . About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are currently looking for a high-performing Senior Software Engineer, Prenatal to join our dynamic software engineering team. Software engineers at BillionToOne work in highly collaborative and interdisciplinary teams of clinicians, computational biologists, and other engineers to robustly scale personalized genomic medicine to millions of patients. If you have experience performing in a full life-cycle development, love seeing your work positively affect your colleagues and patients, and thrive in a fast-paced entrepreneurial environment, this could be a great opportunity for you. In this role, you can have an impact both through many small tools and large product development. This role is a hybrid (onsite 2-3 days/week) position. Projects you may work on include: Build a seamless digital experience so clinicians and patients across a diversity of care centers and socioeconomic status can have access to BillionToOne's highly complex genetic testing Help digitize laborious and error-prone paper-based workflows at busy OBGYN clinics Enable better transfer of care through portable electronic medical records Infuse joyful experiences into pregnancy Technologies we use include: Python, Django, Postgres, React, Typescript, AWS, Salesforce, and emerging AI-assisted coding environments (e.g., Cursor, GitHub Copilot, Claude Code) Responsibilities: Build and maintain robust applications and systems using React, Typescript, Django, Postgres, and other libraries. Collaborate with product design and product management to deliver delightful experiences for patients and providers. Foster a knowledge sharing culture within the team, contributing to the growth and development of colleagues through mentorship and collaborative learning. Demonstrate a creative and out-of-the-box mindset, offering innovative solutions and approaches to complex technical challenges. Prioritize quality by writing comprehensive unit tests and ensuring adequate test coverage across all components and modules. Demonstrate a strong sense of ownership and take responsibility for end-to-end project delivery. The ideal candidate will thrive in an environment where they have the autonomy to make informed decisions and take the initiative to drive projects forward. Champion engineering excellence through architectural best practices, code quality standards, and thoughtful code reviews that emphasize both functionality and security. Apply a security and compliance mindset ensuring adherence to relevant regulations while implementing appropriate safeguards for sensitive patient information. Confidently challenge ideas and assumptions from stakeholders when necessary, while at the same time, leverage their expertise and insights to improve the overall solution. Requirements: 5+ years of professional software development experience with a proven track record of delivering complex projects and adhering to best practices Deep experience with modern frontend technologies, specifically with Typescript, React, and CSS-in-JS libraries Have implemented frontend architecture best practices such as component systems, npm workspaces, Storybook, and Playwright testing Experience with web frameworks such as Django Familiarity with modern AI-driven development practices and tools. Excited about working in-person with our team in Menlo Park Nice-to-haves: Previous startup or entrepreneurial experience Experience in driving products from zero to one Familiarity with healthcare data and standards like FHIR and HL7 Interest in engaging with and applying LLMs Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients Open, transparent culture that includes weekly Town Hall meetings The ability to indirectly or directly change the lives of hundreds of thousands patients Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) Supplemental fertility benefits coverage Retirement savings program including a 4% Company match Increase paid time off with increased tenure Latest and greatest hardware (laptop, lab equipment, facilities) Free daily on-site lunches provided from top eateries A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of $297,321 per year, including a base pay range of $190,081 - $211,201 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our Privacy Policy. About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are looking for a Senior Bioinformatics Scientist to join a fast growing team. This person will be responsible for the generation, analysis, and communication of clinical next-generation DNA sequencing data for the Northstar oncology products. Our sample volume is growing extremely quickly, and this role will own the further development of our analysis pipeline to analyze tens of thousands of samples, and be the lead scientist for everything related to our bioinformatics analyses. The Senior Bioinformatics Scientist role is a full-time onsite position and reports to the Senior Manager of Bioinformatics, Oncology. Responsibilities: Develop sophisticated and robust NGS analysis pipelines capable of processing tens of thousands of samples Develop tests and test frameworks for NGS pipelines Analyze and troubleshoot clinical NGS data Analyze assay performance and contribute to publications that demonstrate the clinical validity and utility of our tests Design new quality metrics and processes for clinical molecular diagnostic assays Collaborate with R&D scientists to generate new scientific insights Communicate assay performance and capabilities to clinical personnel at weekly meetings and to other non-clinical stakeholders Qualifications: PhD in Bioinformatics, Computational Biology, Computer Science, Bioengineering, Physics or related fields 2+ years of experience developing robust and scalable bioinformatics pipelines 2+ years of experience analyzing NGS data Fluency in Python Experience with Linux environment, GitHub and AWS Excellent communication and presentation skills, ability to work across functional teams and with non-experts Nice-To-Haves: Start-up experience Experience working in a regulated environment Experience with CI/CD pipelines and dockerized code deployment Experience with cloud infrastructure management with infrastructure as code such as CDK Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients Open, transparent culture that includes weekly Town Hall meetings The ability to indirectly or directly change the lives of hundreds of thousands patients Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) Supplemental fertility benefits coverage Retirement savings program including a 4% Company match Increase paid time off with increased tenure Latest and greatest hardware (laptop, lab equipment, facilities) Free daily on-site lunches provided from top eateries A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of $244,805 per year, including a base pay range of $156,060 - $176,868 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our . About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

The Accounts Payable Associate will be responsible for processing and managing vendor invoices, payments, and expense reports in an accurate and timely manner. This role will ensure proper financial controls, assist with month-end close activities, and collaborate with various departments to resolve invoice discrepancies. The ideal candidate is detail-oriented, highly organized, and able to manage multiple tasks efficiently in a fast-paced environment. Responsibilities: * Invoice Processing: Review, verify, and process vendor invoices for accuracy, ensuring timely and accurate payments. * Payment Management: Prepare and execute payment runs, including ACH, wire transfers, and checks. * Expense Reports: Review and process employee expense reports, ensuring compliance with company policies and appropriate documentation. * Reconciliation: Perform vendor statement reconciliations and resolve any discrepancies with vendors and internal departments. * Month-End Close: Assist in month-end close activities, including the preparation of accounts payable-related journal entries and accruals. * Vendor Relations: Build and maintain strong relationships with vendors and respond to inquiries regarding payment status or discrepancies. * Documentation: Maintain accurate and up-to-date files of invoices, receipts, and payment records for auditing and reporting purposes. * Compliance: Ensure proper coding and compliance with internal policies, as well as external financial regulations. Qualifications: * Bachelor's degree in Accounting, Finance, or related field preferred, or equivalent relevant experience. Proven experience as an Accounts Payable Associate, Finance Clerk, or similar role. * Strong understanding of accounts payable processes, including invoice processing, vendor management, and reconciliations. * High attention to detail, organizational skills, and the ability to manage multiple tasks in a fast-paced environment. * Proficiency with accounting software and Excel; experience with ERP systems (such as SAP or NetSuite) is a plus. * Strong problem-solving skills and the ability to communicate effectively with vendors and internal departments. * High degree of accuracy and accountability in financial transactions. Benefits And Perks: * Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients * Open, transparent culture that includes weekly Town Hall meetings * The ability to indirectly or directly change the lives of hundreds of thousands patients * Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% * Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) * Supplemental fertility benefits coverage * Retirement savings program including a 4% Company match * Increase paid time off with increased tenure * Latest and greatest hardware (laptop, lab equipment, facilities) * Free daily on-site lunches provided from top eateries * A variety of perks on campus (state of the art gym, restaurant) * Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of $94,620 per year, including a base pay range of $73,920 - $79,200 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are looking for a detail oriented Accessioner to be responsible for assisting with the day-to-day laboratory preparation and equipment maintenance in the Clinical Laboratory. The Accessioner will also be responsible for the accessioning of clinical specimens, performing quality assurance procedures, and complying with all local, state, and federal laboratory requirements. The nature of the work performed by an Accessioner requires excellent attention to detail, effective written and verbal communication skills, the ability to multitask, and the ability to work both independently and in a team environment. Shift: Tue-Sat 8-4:30pm Responsibilities: Perform specimen receipt and accessioning according to the laboratory's standard operating procedures Maintain equipment according to the laboratory's standard operating procedures Clean labware, equipment, and benches Prepare documents and binders for equipment and personnel records Document all corrective actions taken when test systems deviate from the established performance specifications Perform and document routine preventative maintenance Prepare reagents required for laboratory preparation Communicate effectively with coworkers and non- laboratory personnel Report all concerns of accessioning quality and/or safety to the Laboratory Director, Supervisor, or Safety Officer Participate in inspection preparation activities Review of controlled documents as assigned Participate in the training of new accessioning personnel on current procedures including the following: Provide hands-on training Provide guidance, feedback, and mentorship while respecting various learning styles Ensure appropriate documentation is reviewed and completed Participate in training meetings Prioritize a positive work environment Exhibit a dedication to team work above and beyond scheduled daily work Participate in projects and process improvements for sample receipt and accessioning Requirements: Student in pursuit of a Bachelor's Biology degree or related life sciences degree Laboratory experience within the last year preferred Able to integrate and apply feedback in a professional manner Strong attention to detail Able to manage daily specimen processing needs with high emphasis on quality Able to analyze and problem solve basic issues that impact test performance Strong computer skills preferred Able to proactively communicate consistently, clearly, and honestly Nice-To-Haves: Start-up experience Clinical Laboratory experience or equivalent high complexity and volume laboratory experience Bachelor's degree Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients Open, transparent culture that includes weekly Town Hall meetings The ability to indirectly or directly change the lives of hundreds of thousands patients Free daily on-site lunches provided from top eateries Latest and greatest hardware (laptop, lab equipment, facilities) A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of (1) competitive base pay and (2) the opportunity for professional growth. For this position, the base pay rate is $21.12 per hour. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our Privacy Policy. About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are seeking an experienced Senior Software Product Manager, Prenatal to lead the digital product management efforts for our Unity product line. As a software product leader, you will be responsible for the full product lifecycle from ideation and development to launch and growth for several key initiatives. The Senior Software Product Manager, Prenatal is a hybrid position (2-3/week at our Menlo Park facilities) and reports to our Associate Director of Product. Fully remote candidates will not be considered. If you are a passionate product leader with a proven track record in bringing innovative solutions and data-driven products to the market, love collaborating with diverse groups, and thrive in a fast-paced environment, this is the perfect role for you. Responsibilities: Product Strategy and Roadmap: Define and drive the product strategy and roadmap for the Prenatal product line, aligning with the company's vision and business objectives. Product Development: Lead end-to-end product development, working closely with engineering, data science, and design teams to deliver high-quality products. Data-Driven Storytelling: Define success metrics, tie features to overall company strategy, and be a champion for prenatal digital experiences. Market and User Insights: Conduct market research and gather user feedback to inform product decisions and improve user experience. Stakeholder Collaboration: Collaborate with cross-functional teams and engage with healthcare professionals and pharma clients to incorporate feedback into product development. Qualifications: 5+ years of experience, with 2+ years in product management. Bachelor's Degree is required. Strong strategic thinking and analytical skills to interpret complex data and market insights and translate them into clear product strategies and actions. In-depth knowledge of software tools, data analytics, AI, and other emerging technologies. Proven experience in leading through influence and managing multiple projects simultaneously. Excellent communication and interpersonal skills, with the ability to collaborate effectively across teams and communicate complex concepts to stakeholders. Ability to adapt to a fast-paced and evolving market environment. Experience with regulatory requirements and standards in the healthcare industry is a plus. Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients Open, transparent culture that includes weekly Town Hall meetings The ability to indirectly or directly change the lives of hundreds of thousands patients Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) Supplemental fertility benefits coverage Retirement savings program including a 4% Company match Increase paid time off with increased tenure Latest and greatest hardware (laptop, lab equipment, facilities) Free daily on-site lunches provided from top eateries A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of $288,593 per year, including a base pay range of $168,961- $190,081 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our Privacy Policy. About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are seeking an experienced and highly skilled Molecular Genetics Clinical Laboratory Director - Oncology or Senior Laboratory Director - Oncology to provide technical leadership and oversee the daily operations of our high-complexity oncology clinical laboratory. The Oncology Laboratory Director is responsible for ensuring accurate interpretation and reporting of oncology test results, maintaining regulatory compliance, driving quality improvements, and collaborating cross-functionally to advance our oncology assays. This is a full-time, onsite role (2-3 days/week) in Menlo Park, CA. Responsibilities: Provide technical oversight to ensure high-quality oncology testing and alignment with laboratory and clinical goals. Interpret somatic variant results from Northstar liquid biopsy assays, classify variants, and sign out oncology clinical reports. Troubleshoot technical issues related to oncology workflows, including liquid biopsy sample prep, NGS library preparation, sequencing, and data analysis. Evaluate lab performance, implement process improvements, and promote robust quality assurance systems. Review Non-Conforming Events and CAPAs to ensure timely resolution of issues impacting oncology test performance. Ensure compliance with CLIA, CAP, NYSDOH, and other applicable regulatory standards for oncology assays. Oversee accurate documentation of SOPs, validation reports, QC records, personnel competencies, proficiency testing, and report archives. Collaborate with bioinformatics, R&D, and medical affairs on assay development, interpretation guidelines, and continuous assay optimization. Participate in budget planning and manage lab expenses to ensure financial efficiency while maintaining exceptional quality. Support special projects, including scaling new oncology tests, preparing for inspections, and implementing automation. Serve as a subject matter expert on oncology variant interpretation, including AMP/CAP/NYS guidelines. Qualifications: Doctoral degree (PhD, MD, or equivalent) in genetics, molecular biology, or a related field. Board certification (ABMGG, ABP in Molecular Genetic Pathology, or equivalent). Valid or eligible for California Clinical Laboratory Director license (CGMB, CGMBS, MD/DO licensure) and New York State CoQ in oncology testing. 4+ years in a regulated clinical laboratory environment (CLIA/CAP/NYSDOH), with at least 3 years in molecular oncology testing including NGS. Proven leadership in developing, validating, and implementing oncology assays (e.g., somatic mutation panels, methylation assays). Deep knowledge of cancer genomics, including tumor heterogeneity, somatic driver mutations, and targeted therapies. Experience with variant interpretation databases (COSMIC, OncoKB, ClinVar), IGV, BAM file review, and molecular tumor board participation. Strong analytical, communication, and organizational skills, with a track record of leading teams in high-growth environments. Proficiency with LIMS and oncology-focused bioinformatics tools. Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients Open, transparent culture that includes weekly Town Hall meetings The ability to indirectly or directly change the lives of hundreds of thousands patients Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) Supplemental fertility benefits coverage Retirement savings program including a 4% Company match Increase paid time off with increased tenure Latest and greatest hardware (laptop, lab equipment, facilities) Free daily on-site lunches provided from top eateries A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of up to $466,802 per year, including a base pay range of $216,481 - $264,002 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our Privacy Policy. About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are looking for an interdisciplinary Research Associate to perform experiments and assays under the guidance of Senior Scientists. The Research Associate is an on-site position in our Menlo Park, CA office. Responsibilities: Perform experiments and assays under the guidance of Senior Scientists Learn analytical and computational methodologies and analyze the results under the guidance of Senior Scientists Assist Senior Scientists in assay development Keep accurate and meticulous records of experimental details and results Prepare biological samples and reagents to accelerate the R&D process Manage, organize, and support lab operations Requirements: BS or MS in Molecular and Cell Biology, Microbiology, Biophysics, Biochemistry, or related field 1-2 years of research experience (either during BS/MS or afterwards) Previous experience with standard molecular biology techniques (in particular, extensive experience with PCR, electrophoresis, DNA purifications) An ability to quickly learn mathematical, analytical, and experimental concepts High mathematical and statistical aptitude (e.g., you find GRE math section to be extremely easy) Great attention to detail Nice-To-Haves: Start-up experience Knowledge of medical genetics Experience in a cell-free DNA setting Experience with next-generation sequencing library preparation Experience with computational analysis in R, Python, or other programming language Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients Open, transparent culture that includes weekly Town Hall meetings The ability to indirectly or directly change the lives of hundreds of thousands patients Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) Supplemental fertility benefits coverage Retirement savings program including a 4% Company match Increase paid time off with increased tenure Latest and greatest hardware (laptop, lab equipment, facilities) Free daily on-site lunches provided from top eateries A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of up to $102,929 per year, including a base pay range of $73,920 - $84,480 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our Privacy Policy. About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are looking for passionate Clinical Laboratory Associates (CLA) to be responsible for assisting our day-to-day operations, providing equipment maintenance in the clinical laboratory, completing the pre-analytical phase of testing (e.g., specimen receipt, accessioning, and plasma/buffy coat isolation), performing quality assurance procedures, while complying with all local, state, and federal laboratory requirements. The Clinical Laboratory Associate (CLA) is an onsite position (Union City or Menlo Park) and provides a great opportunity for career growth - at BillionToOne, we offer an array of career growth opportunities and a clear growth tracks supported by our performance reviews (every 6 months). Shift Hours: Tuesday - Saturday, 8:00 AM - 4:30 PM Responsibilities: Perform sample accessioning and isolation procedures according to the laboratory's standard operating procedures; Prepare documents for equipment and personnel records; Perform and document routine maintenance of equipment; Prepare other clinical documentation as required and assigned; Clean labware, equipment, and benches; Prepare reagents required for testing; Write and review controlled documents as assigned Qualifications: Bachelor's degree or equivalent in biology or clinical related sciences At least 6 months of experience with molecular biology techniques in a research or clinical laboratory Excellent attention to detail Effective written and verbal communication skills The ability to multitask and work independently Previous clinical laboratory experience is preferred Nice-To-Haves: Start-up experience Biophysics, Molecular biology (DNA purification, PCR, electrophoresis) or next-generation DNA sequencing laboratory experience Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients Open, transparent culture that includes weekly Town Hall meetings The ability to indirectly or directly change the lives of hundreds of thousands patients Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) Supplemental fertility benefits coverage Retirement savings program including a 4% Company match Increase paid time off with increased tenure Latest and greatest hardware (laptop, lab equipment, facilities) Free daily on-site lunches provided from top eateries A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of (1) competitive base pay, (2) the opportunity for professional growth, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of $64,178 per year, including a base pay rate of $28.47 per hour. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our Privacy Policy. About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary-a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion-every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. BillionToOne is seeking a Product Management Intern to to support objectives in the oncology product portfolio (Northstar Select and Response). This person will work to define user requirements and pain points, develop a product roadmap, and execute a successful launch. The ideal candidate will be independent, metrics-driven, and comfortable interfacing with a diverse group of stakeholders. Responsibilities Product strategy and planning: Collaborate cross-functionally to develop product strategy, define success criteria, and create roadmaps. Data analysis: Conduct data analysis to inform a product roadmap and provide strategic recommendations. Project management and execution: Deliver quality products through scope definition, agile project management, and effective stakeholder communication. Communication and documentation: Create detailed specifications for the project team and develop clear business and technical documentation to support project efforts. Foster relationships across multiple teams, manage expectations, and communicate upwards. Collaboration with internal stakeholders: Closely collaborate with internal teams (including Client Services, Sales, Genetic Counseling, Software Engineering, and Lab personnel) to understand user requirements and facilitate project communication. Requirements Currently pursuing a Master's degree, ideally in business administration, biological sciences, engineering, or other related field Experience in biotechnology or healthcare industry preferred Command of product principles, techniques, and best practices Solid analytical skills to interpret internal data and leverage external data sources Comfortable working with highly technical teams, including software engineers, bioinformaticians, and data scientists Excellent communication (verbal and written) and interpersonal skills, with the ability to collaborate effectively across teams and communicate complex concepts to stakeholders Ability to adapt to an ambiguous and evolving internal and external environment Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients Open, transparent culture that includes weekly Town Hall meetings The ability to indirectly or directly change the lives of hundreds of thousands patients Free daily on-site lunches provided from top eateries Latest and greatest hardware (laptop, lab equipment, facilities) A variety of perks on campus (state of the art gym, restaurant) Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of (1) competitive base pay, and (2) the opportunity for professional growth. "}" data-sheets-userformat="{"2":769,"3":{"1":0},"11":4,"12":0}">For this position, the base pay rate is: $4,333 per month. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. For more information about how we protect your information, we encourage you to review our Privacy Policy. About BillionToOne BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA-a breakthrough that's already transformed the lives of over half a million patients worldwide. Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, our Northstar liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care. Our Growth: From $0 to $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest. Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024-with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated-one that remains authentically collaborative and transparent even as we've scaled. Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started. At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work. Ready to help us change the world, one diagnosis at a time? Learn more at ********************

We are currently looking for a high-performing Software Engineer, Digital Experiences to join our dynamic software engineering team. Software engineers at BillionToOne work in highly collaborative and interdisciplinary teams of clinicians, computational biologists, and other engineers to robustly scale personalized genomic medicine to millions of patients. If you have experience performing in a full life-cycle development, love seeing your work positively affect your colleagues and patients, and thrive in a fast-paced entrepreneurial environment, this could be a great opportunity for you. In this role, you can have an impact both through many small tools and large product development. This role is a hybrid (onsite 2-3 days/week) position. Projects you may work on include: * Build a seamless digital experience so clinicians and patients across a diversity of care centers and socioeconomic status can have access to BillionToOne's highly complex genetic testing * Help digitize laborious and error-prone paper-based workflows at busy OBGYN clinics * Enable better transfer of care through portable electronic medical records * Infuse joyful experiences into pregnancy Technologies we use include: Python, Django, Postgres, React, Typescript, AWS, Salesforce, and emerging AI-assisted coding environments (e.g., Cursor, Antigravity, Codex, Claude Code) Responsibilities: * Build and maintain robust applications and systems using React, Typescript, Django, Postgres, and other libraries. * Collaborate with product design and product management to deliver delightful experiences for patients and providers. * Foster a knowledge sharing culture within the team, contributing to the growth and development of colleagues through mentorship and collaborative learning. * Demonstrate a creative and out-of-the-box mindset, offering innovative solutions and approaches to complex technical challenges. * Prioritize quality by writing comprehensive unit tests and ensuring adequate test coverage across all components and modules. * Demonstrate a strong sense of ownership and take responsibility for end-to-end project delivery. The ideal candidate will thrive in an environment where they have the autonomy to make informed decisions and take the initiative to drive projects forward. Qualifications: * 2-5 years of professional software development experience with a proven track record of delivering complex projects and adhering to best practices * Experience with modern frontend technologies, specifically with Typescript, React, and CSS-in-JS libraries * Experience with web frameworks such as Django * Familiarity with modern AI-driven development practices and tools. * Excited about working in-person with our team in Menlo Park Nice-to-haves: * Previous startup or entrepreneurial experience * Experience in driving products from zero to one * Familiarity with healthcare data and standards like FHIR and HL7 * Interest in engaging with and applying LLMs Benefits And Perks: * Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients * Open, transparent culture that includes weekly Town Hall meetings * The ability to indirectly or directly change the lives of hundreds of thousands patients * Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% * Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) * Supplemental fertility benefits coverage * Retirement savings program including a 4% Company match * Increase paid time off with increased tenure * Latest and greatest hardware (laptop, lab equipment, facilities) * Free daily on-site lunches provided from top eateries * A variety of perks on campus (state of the art gym, restaurant) * Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of $158,401 per year, including a base pay range of $95,041 - $126,721 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

We are looking for a Senior Process Engineer to join our growing superstar Process Engineering team in support of clinical patient testing in our high throughput CLIA/CAP lab. The Senior Process Engineer is responsible for (1) Developing, maintaining and using process monitoring tools to continuously improve the performance of our tests, (2) Building out CLIA/CAP compliant scale-up, V&V, and tech transfer procedures, (3) Developing and validating new process and/or chemistry changes to enhance product performance, (4) Leading cross-functional efforts that integrate automation, LIMS, service engineering, and scientific R&D to enhance the operations of the CLIA lab, and (5) Serving as a mentor for junior engineers on the team. This role will enable an individual to flex their skills in process engineering, statistical analysis of large, experimental design, and data science (amongst many more). This role will help to build upon the strong technology and execution found within BTO's walls, and will help us pave the way for replicating our prenatal success in the oncology space. This is considered an onsite role and will require the majority of days to be spent in the office. Responsibilities: * Develop strategies to support >3X annual growth in commercial volume * Build tools and processes to enhance statistical Process Control to enable increasing assay performance and decreasing failure rates during rapid scale-up * Mentor junior engineers and help to establish strong skills and industry best practices across the growing PE team * Plan studies in conjunction with R&D to identify CPPs, process tolerances, and failure modes during late stage product development * Work with Bioinformatics and data science to translate assay CQAs into impactful and actionable process monitoring tools * Develop new data and information handling tools to aid in efficient sample processing within the clinical laboratory * Source and evaluate external technologies which might benefit COGS, process throughput, assay performance, or other key operational metrics * Apply six sigma, Design-for-quality, and 5S frameworks to existing or new processes to improve both capability, scalability, and quality of molecular diagnostic assays * Support high throughput CLIA lab through troubleshooting instrumentation and re-qualifying instrumentation back into clinical use * Identify root causes for process and instrument errors and develop long term solutions Qualifications: * Bachelor's or Master's (preferred) degree in biology, bioengineering, or related sciences * At least 5-6 years of experience with molecular biology techniques in a research or clinical laboratory * Proficiency in R and/or python * Proficiency in handling complex data sets, including back-end data wrangling, database querying, and dashboard development * Strong Statistical Analysis skills * Strong Experience designing rigorous, well controlled studies * Experience with data presentation and technical report authoring * Experience working with GMP, ISO, or equivalent highly-regulated environments, with strong knowledge of Quality Management Systems and practices. * Excellent attention to detail * Effective written and verbal communication skills * Experience mentoring junior team members * Possess logical troubleshooting skills * Experience with automation or clinical laboratory experience is a bonus Nice-To-Haves: * Start-up experience * Experience in a cell-free DNA setting * Knowledge of molecular oncology * Experience with CLIA/CAP, 510K, PMA, and other regulatory requirements * Experience with 6-sigma, Lean, JIT Benefits And Perks: * Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients * Open, transparent culture that includes weekly Town Hall meetings * The ability to indirectly or directly change the lives of hundreds of thousands patients * Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80% * Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%) * Supplemental fertility benefits coverage * Retirement savings program including a 4% Company match * Increase paid time off with increased tenure * Latest and greatest hardware (laptop, lab equipment, facilities) * Free daily on-site lunches provided from top eateries * A variety of perks on campus (state of the art gym, restaurant) * Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.). For this position, we offer a total compensation package of up to $245,857 per year, including a base pay range of $126,721 - $168,961 per year. BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.