Mechanical engineer jobs in Marblehead, MA - 2,253 jobs

About us We are an MIT-born, venture-backed Silicon Valley startup building Engineering General Intelligence (EGI)-an AI Copilot for design and manufacturing. Our mission is to fundamentally reinvent how physical products are designed and built, dramatically accelerating the pace of product development. About the Role You'll play a critical role in designing EGI: AI that understands how to design, reason, and build like an experienced mechanical engineer. In this role, you'll use your deep knowledge of mechanical design and manufacturing to create high-quality reference models, engineering workflows, and datasets that power our AI systems. You'll embed engineering judgment into the training loop and shape how machines learn to solve real-world design and manufacturing problems. Responsibilities Design and build high-quality mechanical components and assemblies in CAD to serve as ground truth for training and evaluating AI systems. Define and maintain standards for model quality, metadata, and annotation to ensure consistency and reliability across datasets. Collaborate closely with ML, software, and product teams to shape dataset requirements and influence model behavior through representative engineering examples. Manage and guide a team of external contractors, including writing SOPs, reviewing output quality, and ensuring timely delivery of data assets What we're looking for Bachelor's or Master's degree in Mechanical Engineering or related field. Strong foundation in machine design, product development, and design for manufacturing (DFM). Experience with one or more CAD platforms (e.g., Siemens NX, SolidWorks) with the aptitude to pick up new ones quickly. Strong attention to detail and appreciation for data/model quality. Excellent written and verbal communication skills, especially when documenting processes or communicating across teams. Experience managing external contractors or vendors, including writing clear standard operating procedures (SOPs), reviewing work quality, and providing feedback. Bonus Points Experience working with Software/ML teams. Experience with CAD automation and parametric model generation. Understanding of how large language models (LLMs) or other ML systems are trained and evaluated. #J-18808-Ljbffr

Toast creates technology to help restaurants and local businesses succeed in a digital world, helping business owners operate, increase sales, engage customers, and keep employees happy. Toast's hardware team is responsible for designing and developing top-tier hardware devices. We operate as a streamlined team that emphasizes the essential aspects of pos (point of sale), payment devices, and accessories, while crafting our devices to provide optimal hardware solutions for our clientele. Through our close interactions with customers, we have identified the crucial design features that render our devices genuinely restaurant-grade. Our focus is on the long‑term dependability of our devices, ensuring that our customers can rely on their toast hardware without concern, allowing them to be prepared for another bustling day. Day in the Life of a Mechanical Engineer (Responsibilities) As a Senior Mechanical Engineer, your responsibilities will include the design, analysis, and prototyping of new products; testing and validation of products ready for launch; and providing support to Sustaining Engineering throughout the lifecycle of Toast hardware products. You will operate within a product‑focused development environment and collaborate with both Toast's internal cross‑functional teams and external suppliers to design and deliver products through to production. Given the highly competitive nature of our industry, you will be required to innovate and create iconic devices for the rapidly evolving POS hardware sector. A robust mechanical design background, meticulous attention to detail, comprehension of critical design processes, and familiarity with fast‑paced development cycles are essential. You will be expected to collaborate closely with cross‑functional teams in operations, product development, industrial design, program management, project management, and hardware to define and deliver exceptional products. We empower small teams to achieve significant results in a dynamic work environment. Design and create the mechanical elements of POS devices and their subsystems. drawing on knowledge and experience from the development of payment devices. Create part designs and mechanical systems, guiding them from initial concept through to production with full ownership per product engineering development team. Formulate test plans and product specification documents for both internal evaluations and external clients. Work in collaboration with a cross‑functional team to produce devices of exceptional quality. Gain an understanding of the restaurant environment and design products that can withstand it. Identify the root causes of various issues (design, manufacturability, production) to enhance designs and ensure successful mass production of products. Design with considerations for functionality, reliability, human factors, manufacturability, and aesthetic requirements. Address reliability failure and quality concerns related to products currently in use by Toast customers in the field. Leverage cutting edge AI tools to enhance your development workflow, improve velocity, and help pioneer new approaches to building - contributing to a culture of innovation and productivity across the team. What you'll need to thrive (Requirements) Proven ability to collaborate effectively with hardware, mechanical engineers, project teams, industrial designers and electrical engineers. At least 10 years of pertinent work experience in the design of consumer, enterprise, and/or handheld products. Proficient in CAD tools, including CREO, Windchill, and PDM processes. Demonstrated expertise in defining and interpreting Finite Element Analysis (FEA) for compliant mechanisms, along with proficiency in GD&T (Geometric Dimensioning and Tolerancing) and related industry concepts. Proven application of statistical tolerance analyses and various design analysis methodologies. Experience in mechanical design and manufacturing processes utilizing plastic, glass, rubber, metal, PCB/FPCB, soft goods, and opto‑electronic physical designs utilized in electronic products. Familiar with decorating technologies such as painting, anodization, plating, printing, and coatings. Experienced in part/tool qualification for manufacturing readiness. Practical, hands‑on troubleshooting experience (including root cause analysis, 8D reports, corrective actions, etc.). Experience in supporting overseas manufacturing builds, requiring up to 25% of business trips both domestically and internationally (to assist with manufacturing and quality assurance during product launches; opportunities to visit global manufacturing sites and contract manufacturing partners' factories). Experience in launching new products to market (to monitor engineering timelines and deliverables, utilizing global engineering resources to enhance efficiency and reduce time‑to‑market). Demonstrated ability to work collaboratively across teams with a strong emphasis on teamwork (to foster relationships with leadership, cross‑functional team members, and peers through team‑building activities and growth opportunities, operating as One Team). A Bachelor of Science degree in mechanical engineering. Preferred qualifications: Delivered numerous products by different development models, such as Internal Development process, JDM, OEM and ODM Product Development processes. Familiarity with PCI compliance. Understanding of the Point of Sale (POS) industry. Proficient in Android‑based devices. Expertise in materials, including characteristics of plastic resins in relation to part‑level quality. Design experience with mechanisms, such as hinges. Experience in sustaining engineering roles for products utilized by customers in the field. Knowledgeable in Six Sigma quality development tools and principles, including Design of Experiments (DOE) and Failure Mode and Effects Analysis (FMEA). Master of Science in Mechanical Engineering. AI at Toast At Toast, one of our company values is that we're hungry to build and learn. We believe learning new AI tools empowers us to build for our customers faster, more independently, and with higher quality. We provide these tools across all disciplines, from Engineering and Product to Sales and Support, and are inspired by how our Toasters are already driving real value with them. The people who thrive here are those who embrace changes that let us build more for our customers; it's a core part of our culture. Our Total Rewards Philosophy We strive to provide competitive compensation and benefits programs that help to attract, retain, and motivate the best and brightest people in our industry. Our total rewards package goes beyond great earnings potential and provides the means to a healthy lifestyle with the flexibility to meet Toasters' changing needs. Learn more about our benefits at ******************************************** #LI-Remote The base salary range for this role is listed below. The starting salary will be determined based on skills and experience. In addition to base salary, our total rewards components include cash compensation (overtime, bonus/commissions, if eligible), benefits, and equity (if eligible). Pay Range: $113,000-$181,000 USD Diversity, Equity, and Inclusion is Baked into our Recipe for Success At Toast, our employees are our secret ingredient-when they thrive, we thrive. The restaurant industry is one of the most diverse, and we embrace that diversity with authenticity, inclusivity, respect, and humility. By embedding these principles into our culture and design, we create equitable opportunities for all and raise the bar in delivering exceptional experiences. We Thrive Together We embrace a hybrid work model that fosters in‑person collaboration while valuing individual needs. Our goal is to build a strong culture of connection as we work together to empower the restaurant community. To learn more about how we work globally and regionally, check out: ********************************************* Apply today! Toast is committed to creating an accessible and inclusive hiring process. As part of this commitment, we strive to provide reasonable accommodations for persons with disabilities to enable them to access the hiring process. If you need an accommodation to access the job application or interview process, please contact candidateaccommodations@toasttab.com. For roles in the United States, It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability. #J-18808-Ljbffr

A leading robotics company in Waltham is seeking a Principal Mechanical Engineer for its Spot robot team. You will lead cross-functional teams to develop and implement complex robotic subsystems. The ideal candidate must hold a BSME with at least 10 years of relevant experience, including advanced skills in CATIA and strong technical writing. This position offers a competitive salary range and generous benefits including medical, dental, vision, 401(k), and paid time off. #J-18808-Ljbffr

Senior Mechanical Engineer About the Role At Parallel Fluidics, we are building the infrastructure to power the next generation of life science tools. We seek a highly motivated Senior Mechanical Engineer to lead the development of a next-generation life science instrument for microfluidic applications. This role requires expertise in electromechanical system design, pressure and flow control systems, and sealing interface design. You will work in a dynamic startup environment, collaborating with cross‑disciplinary teams to deliver innovative solutions for cutting‑edge microfluidic technology. Key Responsibilities Design and engineering: Develop concepts for next generation instrument architecture. Lead mechanical engineering effort for systems and components, including: Moving mechanical assemblies Sealing interfaces Pressure control systems Electronics integration Automation integration Project management: Work with leadership to develop and refine product requirements. Manage outside consultants in related disciplines. Develop accurate product development timelines. Provide regular progress updates to leadership. Prototyping and Testing: Create and iterate prototypes to validate designs and refine functionality. Design and execute verification tests to ensure systems meet requirements. Analyze performance data and implement design improvements. Scale‑up: Oversee the transition of designs from prototyping to scalable manufacturing. Ensure products meet all necessary regulatory requirements. Cross‑functional Collaboration: Work closely with the design, software, and microfluidics teams to integrate subsystems. Provide technical leadership and mentorship to junior engineers. Innovation and Continuous Improvement: Stay updated on advancements in mechanical engineering, lab automation, and microfluidics. Identify opportunities for improving performance, reliability, and cost‑effectiveness in future generations of products. Qualifications Required: Bachelor's Degree in Mechanical Engineering or a related field. 5+ years of experience in mechanical design, with a focus on electromechanical systems and fluid control. Strong understanding of pressure control systems, design for manufacturing, and sealing technologies. Proven track record of bringing electromechanical systems to market. Excellent communication and project management skills. Proficiency in 3D CAD software (e.g., SolidWorks, Autodesk Fusion, or equivalent). Preferred: Familiarity with cleanroom environments and microfabrication processes. Knowledge of regulatory and safety standards for laboratory instrumentation. Experience building microfluidic technologies. What We Offer A collaborative and innovative work environment where your ideas shape our future. Opportunities to work on groundbreaking technologies in life sciences and microfluidics. Comprehensive benefits, including health, dental, vision, and life insurance coverage. Equity options to share in the company's growth and success. At Parallel Fluidics, we value diversity and inclusion and welcome individuals from all backgrounds, experiences, and perspectives. If you are passionate about mechanical engineering and eager to drive innovation in life science tools, apply today to help shape the future of microfluidics. #J-18808-Ljbffr

Join JB&B and shape the future of the built environment! Founded in 1915, Jaros, Baum & Bolles has been a pillar of engineering innovation in New York City for over a century. Specializing in mechanical, electrical, plumbing (MEP), JB&B has contributed to some of the most iconic buildings. In October 2025, JB&B joined forces with Trinity Consultants, a global consulting firm focused on the natural and built environments. JB&B now operates within Trinity's Built Environment division, combining its deep expertise in high‑performance building systems with Trinity's strengths in acoustic design, facility operations, commissioning, and technology strategy. This strategic merger expands JB&B's capabilities and offers employees: Access to a broader portfolio of international projects and clients Enhanced career mobility across Trinity's global network Interdisciplinary collaboration with experts in sustainability, environmental science, and digital infrastructure About the Role We are seeking a Senior Engineer to join our dynamic Electrical team in our Boston office. This role is ideal for a professional with a proficient understanding of electrical design, project execution, and interdisciplinary coordination. As a Senior Engineer, you will making a positive impact on the office environment by: Sharing technical knowledge and best practices with colleagues. Acting as a mentor to junior engineers, supporting their professional development. Actively participating in office initiatives, team‑building events, and knowledge‑sharing activities. Key Responsibilities Design tenant fit‑out projects and complete specific tasks on base building/infrastructure upgrades; assemble riser diagrams, schedules, and floor plans. Plan and coordinate routing of major distribution, main equipment rooms, closets, shafts, and risers. Lead design tasks that support the overall trade system (e.g., branch circuiting, ductwork distribution, piping distribution, etc.). Review shop drawings, perform site visits and punch‑lists with limited supervision to verify accurate implementation. Understand documentation requirements and develop relevant content for each deliverable phase (e.g., SD, DD, CD, and specifications). Implement office procedures related to both design (e.g., archiving drawings, filing drawings and forms, etc.) and construction administration (e.g., updating shop drawing log, updating RFI log, etc.). Minimum Qualifications Bachelor's degree in electrical or mechanical engineering. 2+ years of experience. Excellent oral and written communication. Proficient in all design calculations and software tools (e.g., Revit, AutoCAD) applicable to the discipline. Knowledge of trade‑specific scope of project (e.g., proposal/add‑service), trade‑related codes (including energy, building, etc.) and required coordination with other trades. Why Work at JB&B? Legacy + Innovation: Our company blends a rich history with forward‑thinking design, including smart building systems and deep carbon reduction strategies. Collaborative Culture: With over 400 professionals, our company fosters mentorship, teamwork, and continuous learning. Global Impact: Now part of Trinity, our company offers opportunities to work on transformative projects across commercial, healthcare, aviation, life sciences, and data center sectors. Multiple office locations: New York, Boston and Philadelphia. What We Offer Hybrid workplace offering the flexibility to work both from home and the office. Comprehensive benefits package including 401(k) employer match and stock options. Paid time off (PTO), volunteer program, and employee resource groups. Training and professional development courses through JB&B University. Estimated compensation range: $85,000 - $93,000 annual salary Jaros, Baum & Bolles is an equal opportunity employer. All qualified candidates will receive consideration for employment without regard to race, ethnicity, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, marital status, military veteran status, unemployment status, or any other status protected by law. Protected Veteran Self‑Identification (Optional) A “disabled veteran” is one of the following: A veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or would be entitled if not for retired pay) under laws administered by the Secretary of Veterans Affairs. A person who was discharged or released from active duty because of a service‑connected disability. A “recently separated veteran” means any veteran during the three‑year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service. An “active duty wartime or campaign badge veteran” means a veteran who served on active duty in the U.S. military, ground, naval, or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense. An “Armed forces service medal veteran” means a veteran who, while serving on active duty in the U.S. military, ground, naval, or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985. Voluntary Self‑Identification of Disability (Optional) Disabilities include, but are not limited to: Alcohol or other substance use disorder (not currently using drugs illegally) Blind or low vision Cancer (past or present) Cardiovascular or heart disease Celiac disease Cerebral palsy Deaf or serious difficulty hearing Diabetes Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders Epilepsy or other seizure disorder Mental health conditions, e.g., depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD Missing limbs or partially missing limbs Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s), and/or other supports Nervous system condition, e.g., migraine headaches, Parkinson's disease, multiple sclerosis (MS) Neurodivergence, e.g., attention‑deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities Partial or complete paralysis (any cause) Pulmonary or respiratory conditions, e.g., tuberculosis, asthma, emphysema #J-18808-Ljbffr

A biomedical technology company in Boston seeks a Principal Product Development Engineer to lead the design and development of an innovative in vitro diagnostic device. The candidate will apply advanced scientific principles in whole blood hemostasis testing and will work collaboratively within a multidisciplinary team to solve complex challenges in a fast-paced environment. A strong academic background in bioengineering, biochemistry, or analytical chemistry is required along with relevant experience in assay development and device integration. #J-18808-Ljbffr

A leading energy solutions provider in Boston is seeking a Senior Project Engineer - Energy to lead energy projects. Candidates should have over 10 years of experience in energy efficiency, a Bachelor's degree in engineering, and proven leadership skills. This role involves transforming customer requirements into effective solutions and mentoring team members. The company offers competitive pay and a supportive work environment, with opportunities for career growth. #J-18808-Ljbffr

Mentor Technical Group (MTG) provides a comprehensive portfolio of technical support and solutions for the FDA-regulated industry. As a world leader in life science engineering and technical solutions, MTG has the knowledge and experience to ensure compliance with pharmaceutical, biotechnology, and medical device safety and efficacy guidelines. With offices in Caguas, PR, Boston, MA & San Francisco, CA and we serve life sciences clients in six global markets: United States, Puerto Rico, Dominican Republic, Mexico, Germany, Canada, and South America. Responsibilities Engineering Experience in Medical Device Industry Problem Solving Knowledge (Yellow or Green Belt knowledge) Responsibilities may include the following and other duties may be assigned. Designs manufacturing processes, procedures and production layouts for assemblies, equipment installation, processing, machining and material handling. Designs arrangement of machines within plant facilities to ensure most efficient and productive layout. Designs sequence of operations and specifies procedures for the fabrication of tools and equipment and other functions that affect product performance. Adapts machine or equipment design to factory and production conditions. May incorporate inspection and test requirements into the production plan. Inspects performance of machinery, equipment, and tools to verify their efficiency, and investigates and initiates corrective action of problems and deficiencies to ensure product quality. Develops manufacturing processes that are applicable to statistical process control, and may develop those techniques. Provides guidance to engineering regarding design concepts and specification requirements to best utilize equipment and manufacturing techniques. Ensures processes and procedures are in compliance with regulations. Qualifications Requirements/Knowledge/Education/Skills BBA in Engineering Knowledge in CSV Problem Solving Knowledge (Yellow or Green Belt knowledge) Mentor Technical Group is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, genetic information, national origin, protected veteran status, disability status, or any other characteristic protected by law. #J-18808-Ljbffr

A leading health solutions company in Boston is seeking an AI Lead to oversee the development and deployment of AI and Machine Learning solutions. The role involves strategic planning, technical oversight, and collaboration with cross-functional teams. Candidates should have a Bachelor's degree and significant experience in AI/ML technologies. The compensation is competitive with comprehensive benefits and opportunities for bonuses. #J-18808-Ljbffr

The Artificial Intelligence & Machine Learning Engineer/Scientist I works within the Artificial Intelligence Operations and Services group (AIOS) in the Informatics & Analytics department of Dana-Farber Cancer Institute. This role provides support in machine learning, NLP, and computer vision to build reusable and scalable AI/ML tools and pipelines to support Dana-Farber operations, research, and clinical practice. The role operates in a matrixed team environment, collaborating with client-facing leads, software engineers, product managers, project managers, project sponsors, and clients. The Informatics & Analytics department serves patients, present and future, by collaboratively building a sustainable informatics and analytics ecosystem of tools and services to support and grow the Institute's research, clinical, and business missions. The AIOS group provides services related to AI, machine learning, computer vision, NLP, production deployment, cloud infrastructure, data engineering, project management standards, and data labeling. Located in Boston and the surrounding communities, Dana-Farber Cancer Institute is a leader in life-changing breakthroughs in cancer research and patient care. We are united in our mission of conquering cancer, HIV/AIDS and related diseases. We strive to create an inclusive, diverse, and equitable environment where we provide compassionate and comprehensive care to patients of all backgrounds, and design programs to promote public health particularly among high-risk and underserved populations. We conduct groundbreaking research that advances treatment, we educate tomorrow's physician/researchers, and we work with amazing partners, including other Harvard Medical School-affiliated hospitals. Responsibilities: Contribute to the development, deployment, and monitoring of AI solutions, supporting scalable and efficient practices to ensure reliable telemetry tracking, model performance monitoring, and cross-platform efficiency. Assist in implementing and maintaining data and machine learning solutions, helping to manage models throughout their lifecycle to ensure they are well-organized, auditable, and maintain high accuracy. Support the creation and maintenance of CI/CD pipelines for machine learning models in cloud environments, including workflows for batch, online, streaming, and edge training/inference. Elicit functional requirements from end users and data science teams, utilizing methods such as user interviews, mockups, wireframes, end-to-end testing, prototypes, GUI designs, and use cases. Provide updates on assigned tasks and project progress to multiple groups including the AIOS team, client-facing leads, project sponsors, business owners, and internal stakeholders. Work effectively as part of a team, contributing to shared goals and supporting the success of projects and initiatives. Qualifications: Bachelor's degree in a related field (Computer Science, Data Science, Engineering) required. Master's degree preferred. 1 year of work experience in machine learning and AI required. Relevant lab work and research projects, teaching assistantships, internships, cooperative education programs undertaken during an advanced degree program may be considered toward qualifying work experience. Experience within a clinical or research environment preferred. Knowledge, Skills, and Abilities Required: Excellent communication and effective problem-solving skills. Track record in serving a variety of diverse customers and projects. Ability to work independently, prioritize, and adapt to meet the evolving needs of the Institute. Familiarity with Python. R, Databricks, and/or Snowflake experience preferred. Experience with one of the following: MLOPS and ML engineering; GenAI and agentic AI; AL/ML and data science; data engineering and pipelines. At Dana-Farber Cancer Institute, we work every day to create an innovative, caring, and inclusive environment where every patient, family, and staff member feels they belong. As relentless as we are in our mission to reduce the burden of cancer for all, we are committed to having faculty and staff that offer multifaceted experiences. Cancer knows no boundaries and when it comes to hiring the most dedicated and diverse professionals, neither do we. If working in this kind of organization inspires you, we encourage you to apply. Dana-Farber Cancer Institute is an equal opportunity employer and affirms the right of every qualified applicant to receive consideration for employment without regard to race, color, religion, sex, gender identity or expression, national origin, sexual orientation, genetic information, disability, age, ancestry, military service, protected veteran status, or other characteristics protected by law. #J-18808-Ljbffr

At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit careers.klaviyo.com to see how we empower creators to own their own destiny. Be Klaviyo's senior IC for scale, you will report into a VP of Engineering and lead performance, reliability, multi‑region, and large‑tenant readiness. You'll drive platform‑wide architectural change, hunt bottlenecks and optimize systems, and partner across teams to productionize improvements. Given that this is an IC role with no direct reports; you will lead via technical depth, hands‑on impact, and crisp cross‑org alignment. What You'll Do Define enterprise scalability fitness functions (latency/throughput/error rates) and a scorecard; align teams to SLOs and budgets. Design/implement sharding and partitioning strategies, caching/back‑pressure, multi‑region readiness, and high‑volume migration paths. Build lightweight enablement: benchmarks, profiling harnesses, reproducible testbeds; pair with teams to land fixes. Lead scalability reviews and readiness gates that accelerate-not block-delivery; drive incident deep dives tied to systemic fixes. Communicate clearly to execs and engineers, tying technical work to business impact and customer outcomes. Integrate AI into scale and resiliency work-from proactive anomaly detection to synthetic load and guided runbooks-so performance improvements stick and incidents don't repeat. Who You Are Experience: 12+ years scaling multi‑tenant SaaS with a reputation for removing major bottlenecks and proving impact with data. Technical expertise: Performance engineering, capacity planning, sharding/partitioning, caching/back‑pressure, multi‑region readiness, and high‑volume migrations; you turn hotspots into robust patterns. AI tools & automation: You apply AI to scale work-profiling assistance, workload modeling, synthetic traffic generation, anomaly detection, and runbook copilots-always with explicit guardrails and observability. Cross‑org influence: You align teams through fitness functions, scorecards, and readiness gates that accelerate-not block-delivery; you communicate tradeoffs crisply to execs and engineers. AI fluency: Curious, adaptable, and proactive in exploring AI that responsibly improves scale outcomes. Nice to Haves Scale scorecard: Company‑wide fitness functions (latency/throughput/error rates) are adopted and reviewed regularly. High‑impact wins: 2-3 bottlenecks removed with documented, reproducible testbeds; pXX latencies and error rates improve on top enterprise workloads; repeat P0s trend down. AI‑assisted scale engineering: AI‑driven anomaly detection reduces alert noise while improving signal; generative load testing and copilot runbooks are used in release/readiness checks for the top critical services; time‑to‑isolate regressions drops 20-30%. Success in 6-12 Months Company‑wide scale scorecard in place; 2-3 high‑impact bottlenecks removed; top enterprise workloads show improved pXX latencies and error rates; fewer repeat P0s. We use Covey as part of our hiring and / or promotional process. For jobs or candidates in NYC, certain features may qualify it as an AEDT. As part of the evaluation process we provide Covey with job requirements and candidate submitted applications. We began using Covey Scout for Inbound on April 3, 2025. Please see the independent bias audit report covering our use of Covey here Massachusetts Applicants: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability. Get to Know Klaviyo Base Pay Range For US Locations: $248,000 - $372,000 USD We're Klaviyo (pronounced-vee-oh). We empower creators to own their destiny by making first‑party data accessible and actionable like never before. We see limitless potential for the technology we're developing to nurture personalized experiences in ecommerce and beyond. To reach our goals, we need our own crew of remarkable creators-ambitious and collaborative teammates who stay focused on our north star: delighting our customers. If you're ready to do the best work of your career, where you'll be welcomed as your whole self from day one and supported with generous benefits, we hope you'll join us. AI fluency at Klaviyo includes responsible use of AI (including privacy, security, bias awareness, and human‑in‑the‑loop). We provide accommodations as needed. Klaviyo is committed to a policy of equal opportunity and non‑discrimination. We do not discriminate on the basis of race, ethnicity, citizenship, national origin, color, religion or religious creed, age, sex (including pregnancy), gender identity, sexual orientation, physical or mental disability, veteran or active military status, marital status, criminal record, genetics, retaliation, sexual harassment or any other characteristic protected by applicable law. IMPORTANT NOTICE: Our company takes the security and privacy of job applicants very seriously. We will never ask for payment, bank details, or personal financial information as part of the application process. All our legitimate job postings can be found on our official career site. Please be cautious of job offers that come from non‑company email addresses (@klaviyo.com), instant messaging platforms, or unsolicited calls. By clicking "Submit Application" you consent to Klaviyo processing your Personal Data in accordance with our Job Applicant Privacy Notice. If you do not wish for Klaviyo to process your Personal Data, please do not submit an application. You can find our Job Applicant Privacy Notice here and here (FR). #J-18808-Ljbffr

Title: Lead Full Stack Engineer Reporting Structure: This role reports to the Head of Product & Engineering CivilGrid is a venture-backed SaaS construction tech company building the "Google Maps for the Underground." Come help us disrupt a $4.7T US industry segment that desperately needs innovation. This opportunity has tremendous upside as it scales. CivilGrid aggregates public and proprietary utility, geotechnical, environmental, and jurisdictional data. The consolidated information is sold via our collaborative SaaS mapping platform to engineers and developers who need it to make early-stage decisions on real estate and infrastructure projects. Real time data access reduces labor and project delays, accelerates decision making and reduces project risk. Collaborative features ensure faster information flow and decisioning inside and outside the organization and better project insight retention over time. Responsibilities As a small team, we all wear many hats and enjoy tackling new challenges. When it comes to tech, we're seeking experienced individuals who can efficiently identify problems and devise solutions. You will be a foundational team member with the opportunity to work on all aspects of the application and shape the technical future of CivilGrid. Joining at this stage, you will build core systems that will help us scale quickly, and benefit from tremendous upside as we grow. Design and build end-to-end features, covering everything from database models to user-facing components using React. Tackle a variety of areas: web and mobile applications, mapping interfaces, data processing pipelines, algorithmic relevancy, and real-time collaboration tools. Profile and tune performance across the entire stack to ensure efficient and responsive systems. Implement and maintain analytics, health monitoring, alerts, and logging to maintain operational visibility and system reliability. Conduct code reviews, mentor junior engineers, and offer constructive feedback to help grow the team's technical capabilities. Is this you? 5 years of experience working with JavaScript or TypeScript, particularly with React and Node.js (or equivalent frameworks). Comfortable driving 0→1 development-taking projects from conception through to production launches. Start Up Ready: Autonomous, moves fast, takes initiative without being asked Thrives in greenfield environments and enjoys architecting, designing, and execution of new systems and solutions. Experience working on a complex B2B Product Strong foundational knowledge of Postgres Familiarity with geospatial frameworks (PostGIS, GeoJSON, map rendering libraries, etc.) is a plus. Conduct code reviews, mentor junior engineers, and offer constructive feedback to help grow the team's technical capabilities. Strong verbal and written communication, able to articulate ideas clearly and collaborate effectively. Must be authorized to work in the United States Bonus Qualification: A degree in Computer Science, Civil Engineering, or a related field (B.S. or M.S.)-nice to have, but not required. Perks Interesting and challenging work Lots of room for growth Competitive salary and equity Health insurance Flexible and remote-friendly work environment FSA (health and dependent care) Unlimited PTO #J-18808-Ljbffr

A defense technology company in Boston is seeking a hands-on leader to architect a scalable simulation environment, leveraging multi-threaded C++ and AI. Responsibilities include designing physics simulations, collaborating with teams, and mentoring developers. Candidates should have a Master's in a related field and relevant experience with a Secret clearance. Benefits include comprehensive healthcare, a 401k plan, and a flexible hybrid work arrangement. #J-18808-Ljbffr

- Collaborate with design teams to understand and debug constraints, facilitating logic changes to optimize timing. - Work with the Physical Design team to identify issues and share best practices. - Develop and implement timing ECOs for project tapeouts. - Create and maintain scripts and methodologies for analysis and runs. - Document processes and contribute to guidelines and specifications. - Conduct detailed analysis of timing paths to identify key issues. - Implement timing infrastructure to support design goals. Minimum Qualifications Bachelor's degree and 3+ years of relevant industry experience. Experience with large design STA and timing closure. Proficiency in programming with Perl and TCL. Preferred Qualifications Hands-on experience in STA. Knowledge of timing aspects in large high-performance SoC designs in sub-micron technologies. Understanding of timing closure methodologies, noise, crosstalk, and OCV effects. Familiarity with circuit modeling, including SPICE models and corner analysis. Experience with ECO techniques and implementation. Strong communication skills to clearly describe issues and follow through to resolution. #J-18808-Ljbffr

We're an MIT-born, venture-backed Silicon Valley startup building Engineering General Intelligence (EGI), an AI copilot for design and manufacturing. Our mission is to reinvent how physical products are designed and built, dramatically accelerating product development. The Data Studio Lead owns the end-to-end process of transforming raw customer data into usable, high quality datasets and insights that power development, evaluation, and delivery. This role sits at the intersection of product, research, engineering, and business teams. You will build and lead a team responsible for data pipelines, labeling workflows, quality assurance, and customer‑specific data solutions that either enable our developers and researchers to advance the product or deliver the solution directly to customers. Mechanical engineering or manufacturing design experience is essential; candidates without this background will not be considered. Key Responsibilities Data Operations & Delivery Own the definition and evaluation of output quality, ensuring consistency and accountability across all internal and external datasets. Oversee ingestion, cleaning, transformation, and structuring of customer data for AI model training and inference. Build scalable processes and frameworks for data labeling, annotation tools, quality checks, and feedback loops. Ensure timely, high quality data delivery for internal R&D and customer deployments. Own SLAs, accuracy targets, and “definition of quality” for all datasets. Product & Solution Leadership Partner with Product Managers to shape data‑related features, workflows, and tooling (e.g., annotation UI, correction UI, model output review tools). Translate customer needs into clear data requirements and repeatable solutions. Team & Process Leadership Build and lead a Data Studio team. Implement best practices for documentation, quality metrics, repeatable workflows, and compliance. Drive continuous improvements in throughput, cost efficiency, and accuracy. Cross‑Functional Collaboration Work closely with engineering and research teams to define data needs for model training, evaluation, and debugging. Collaborate with BD team to scope data requirements for onboarding and implementation. Serve as the subject‑matter expert on data quality, data formats, labeling standards, and customer‑specific nuances related to manufacturing design. Customer & Project Management Interface with customers to understand their domain, data structures, and quality expectations. Guide customers through data preparation, schema definition, and ongoing iteration. Own delivery timelines, reporting, and communication for all active data projects. Required Qualifications Domain expertise in manufacturing design or industrial workflows; mechanical engineering background is required. Hands‑on experience with CAD tools (e.g., SolidWorks, CATIA, Siemens NX, Creo) and familiarity with interpreting complex mechanical models. Experience creating or working with technical documentation such as exploded views, work‑step sequencing, GD&T drawings, repair manuals, and similar manufacturing/assembly artifacts. Ability to work directly with customers and translate domain problems into data requirements. Experience leading and growing teams. Excellent project management and cross‑functional communication skills. Preferred Qualifications Familiarity with annotation tools and illustration tools (e.g., Creo Illustrate, Adobe Illustrator, Arbortext). Experience in data operations, data analytics, ML operations, or related fields. Strong understanding of AI/ML data lifecycle: collection → labeling → QA → training → evaluation → deployment. Ability to partner with product managers to shape data tooling and internal UIs. Experience in a startup or high‑growth tech environment. What Success Looks Like High‑quality, on‑time data delivery for every customer and internal teams. Increasing automation and decreasing manual effort in the data pipeline. Clear standards for data quality that align with model performance needs. Data Studio becomes a strategic partner for customers in automating their workflows. #J-18808-Ljbffr

About the role At Parallel Fluidics, we are building infrastructure to power the next generation of life science tools. As our Principal Mechanical Engineer, you will lead our most mission‑critical engineering projects, set the standard for technical excellence, and shape the processes that drive our product development and manufacturing. The ideal candidate is a proven engineering leader with deep expertise in electromechanical system design, design‑for‑manufacturing, and automation. Please apply if you are excited to create an outsized impact by driving breakthrough products from concept to scale at a rapidly growing startup. Responsibilities Engineering leadership Serve as principal architect of the engineering process at Parallel Lead our most mission‑critical engineering projects Act as a technical expert on other internal projects Identify opportunities to improve our engineering systems and tools Mentor junior and senior engineers across disciplines Report progress and key insights to company leadership Product development Own the process to bring Parallel's next‑generation hardware products from concept to scale Identify and vet high‑volume manufacturing partners Transfer high‑volume products from in‑house manufacturing to third‑party manufacturers Manufacturing systems Find opportunities to improve our in‑house designed manufacturing equipment Design experiments and test methods to optimize manufacturing processes Collaborate with the manufacturing team to identify gaps and opportunities for improvement Qualifications Required Bachelor's Degree in Mechanical Engineering or a related field 10+ years of experience in high‑performing engineering organizations Strong understanding of product development, design‑for‑manufacturing, machine design, and automation Proven track record of bringing electromechanical systems to market Excellent communication and project management skills Expertise in 3D CAD software (e.g., SolidWorks, Autodesk Fusion, or equivalent) Preferred Familiarity with cleanroom environments and microfabrication processes Knowledge of regulatory and safety standards for laboratory instrumentation Experience building microfluidic technologies What We Offer A collaborative and innovative work environment where your ideas shape our future. Opportunities to work on groundbreaking technologies in life sciences and microfluidics. Comprehensive benefits, including health, dental, vision, and life insurance coverage. Equity options to share in the company's growth and success. We value diversity of all kinds and are committed to building a diverse and inclusive workplace where we learn from each other. We are an equal‑opportunity employer and welcome people of all different backgrounds, experiences, and perspectives. #J-18808-Ljbffr

Principal Product Development Engineer to join a team of scientists and engineers located in our Boston, MA Research and Development Systems Engineering Laboratory contributing to the design and development of an in vitro diagnostic (IVD) device. This role involves applying advanced scientific principles and creating reliable, accurate, and regulatory-compliant clinical diagnostic solutions in whole blood hemostasis testing. The focus of this position will be to evaluate and develop novel assay designs to drive innovative solutions to complex issues. This individual will be both a leader and collaborator within the multidisciplinary development project team to ensure timely and proficient completion of projects in a fast-paced and evolving environment. The ideal candidate will have a strong background in bioengineering, biochemistry, analytical chemistry, or similar fields combined with experience in assay development and device integration. We are seeking a highly skilled and innovative **Key Responsibilities** Perform analytical performance studies to ensure product requirements are met.Work with the clinical science team to write clinical trial protocols and reports.Contribute to the management of the laboratories including tracking calibrations, environmental monitoring, safety hazards, and other tasks, as required.Exhibit highly effective communication and collaboration skills that can be applied across functions. **Qualifications** **Education:** Ph.D. or M.S. in Bioengineering, Biochemistry, Analytical Chemistry, or related field. **Experience:** Experience developing and optimizing assays on disposable microfluidic or cartridge-based platforms.Experience in reagent formulation and stabilization for microfluidic applications (small-volume drying, bead-based reagents, in-channel drying, long-term stability on plastic substrates).- **Preferred Experience**Hands-on experience with developing assays or diagnostic platforms.Experience with data analysis software and statistical tools. **Skills:** Strong knowledge of biochemical, reagent-driven, clinical diagnostics.Familiarity with regulatory requirements (FDA, CLSI, IVDR, ISO standards).Excellent problem-solving, project management, and communication skills.Depending on your location, you may be eligible for more detailed information related to the compensation and benefits related to this job posting. If you believe you may be entitled to such information by law, you may contact **************, Monday through Friday, 7:30 a.m. - 5 p.m. ET or email *********************. #J-18808-Ljbffr

Advance your career with the Stark Tech team. We'll shape your future together! Stark Tech is a total optimization provider of facilities and energy solutions. Stark Tech leads the market in providing cutting‑edge facilities and energy solutions. We integrate systems, offer energy‑efficient equipment and services, and provide building analytics to help customers meet sustainability goals. Our large‑scale equipment converts waste to renewable natural gas, reducing greenhouse gas emissions. Additionally, we enhance the utility grid with microgrid and battery energy storage solutions, along with solar development consulting services. Join Stark Tech to be part of the future of energy transformation. What you can expect We believe your well‑being and satisfaction are vital for a fulfilling career. We are gritty, employee, and customer focused. Here are some of the benefits we provide: Paid Time Off & Holidays 401(k) with employer match Medical/Dental/Vision insurance Health Savings Account (HSA) and Flexible Spending Account (FSA) HSA employer contribution Life and Disability insurance Wellness Program (participation incentives) Employee Assistance Program Competitive pay Career development How do you excel in this position Stark Tech is seeking a Senior Project Engineer - Energy who excels by transforming complex customer requirements into actionable, data‑driven solutions across HVAC, controls, central plant optimization, and integrated energy systems. You lead projects from early concept through design, pricing, and performance validation-leveraging modeling, analytics, and real‑world constructability insight to ensure every solution is technically sound, financially viable, and executable in the field. You collaborate seamlessly with Sales, Engineering, and Operations to protect margin, reduce risk, and deliver high‑performance building outcomes. Through mentorship, strong communication, and technical leadership, you elevate both project delivery and overall team capability. What are we looking for Associate degree required; Bachelor's preferred in engineering or related discipline. 10+ years delivering building infrastructure, energy efficiency, or distributed energy resource projects. Experience leading technical teams and managing cross‑functional coordination. Professional certifications are highly desirable. Technical Knowledge & Skills Expert‑level ability in energy modeling, building analytics, load studies, utility consumption analysis. Deep understanding of HVAC systems, central plant optimization, and building automation controls. Experience developing performance guarantees, feasibility studies, and detailed design documentation. Familiarity with M&V practices and IPMVP protocols. Skilled in evaluating engineering designs for constructability, cost, lifecycle value, and performance risk. Proficiency with Microsoft Office; experience with industry software tools for modeling, analytics, and design. Strong knowledge of codes, safety standards, and environmental regulations. Leadership & Collaboration Proven ability to mentor junior engineers and influence cross‑functional project teams. Strong customer‑facing communication skills. Ability to convert technical value into meaningful business outcomes for customers and internal stakeholders. Working with us Our fast‑growing organization offers competitive pay, a positive work environment, and opportunities for career growth within the company. If you're a motivated individual with a sense of accountability, resiliency, and a dedication to providing exceptional customer service, we encourage you to get in touch with us. Compensation The advertised compensation range for this position represents what we believe, at the time of posting, to be competitive and acceptable by reviewing comprehensive market data to include industry and roles of similar responsibility and level. Within the range, wage will be determined by several factors including candidate knowledge, job‑related skills, experience, and relevant education or training. #J-18808-Ljbffr

A leading technical solutions provider is seeking an engineer specialized in the medical device industry. The role involves designing manufacturing processes and ensuring compliance with safety regulations. Candidates should have a BBA in Engineering, knowledge in CSV, and problem-solving skills (Yellow or Green Belt). The position offers an opportunity to work with innovative technologies in a dynamic environment located in Caguas, Puerto Rico. #J-18808-Ljbffr