Research and development engineer jobs in Hayward, CA - 5,147 jobs

Vision Affordable, natural, factory-built homes. We've embarked on a homebuilding renaissance where affordability,sustainability, and beauty come together. Out beyond ideas of right angles and hard lines, there's a bioceramic dome. The Geodesic Dome, introduced by the Visionary Architect Buckminster Fuller, is the world's most efficient structure. But to manufacture domes, we needed a material science breakthrough. Enter bioceramics a new class of earth-friendly materials that mimic human bone. Bioceramic domes maximize efficiency at the most fundamental levels - geometry, materials, and manufacturing method. In the future, we won't live in boxes. Join us there! Project After successfully achieving factory-built housing certification from the State of California and breaking ground on our flagship Amma dome build, we are hiring key team members to help us complete the design of the Amma product. We have a strong preference for team members to locate full-time onsite in Grass Valley, California, although hybrid/remote arrangements are possible for standout candidates. Role Geoship is seeking a Product Design Engineer to advance and finalize the design of our first Amma dome system. This role is for a first-principles problem solver and a multidisciplinary engineer who thrives in ambiguity and rapid iteration. You will integrate structural, mechanical, materials, and relevant building and safety standards into elegant, manufacturable solutions that bring a new form of sustainable housing into reality. You will work closely with studio designers, materials scientists, manufacturing engineers, and operations teams to develop bioceramic molded parts, connection systems, structural components, interior systems, and other assemblies that seamlessly integrate into the finished dome. Your work will span concept development, detailed design, prototyping, design-for-manufacturing, analysis, testing, documentation, supplier engagement, and hands-on support during prototype builds. This is a rare opportunity to build a new housing technology from the ground up. If you think beyond conventional solutions, care deeply about regenerative design, and want to help shape the future of homes, we'd love to meet you! Description ● Product & Component Design: Own the design of bioceramic components, connection systems, and mechanical assemblies from initial concept through release-applying first-principles reasoning, strong engineering fundamentals, and comprehensive system-level design that includes performing energy and load calculations, flow and pressure analysis, and MEP equipment selection; developing schematics, layouts, and installation instructions for HVAC ducting, piping, and related infrastructure; and ensuring compliance with all relevant building codes and industry standards. ● Design for Manufacturing: Ensure designs are compatible with casting, mixing, material-handling, and assembly processes; create clear specifications, tolerances, and performance requirements to enable high-quality, repeatable, scalable production ● Prototyping & Testing: Build and test prototypes, develop test rigs when needed, and conduct design analyses, validate mechanical behavior and assembly methods, and iterate rapidly based on real-world results ● Compliance & Standards Integration: Ensure mechanical designs align with relevant structural, safety, and building standards, translating regulatory and performance requirements into clear engineering specifications. ● Cross-Functional Collaboration: Partner with studio design, engineering, materials, and operations teams to develop system architectures, resolve tradeoffs, and support prototype and pilot builds ● Documentation & Communication: Produce clear CAD models, drawings, BOMs, specifications, DFMEAs, test summaries, and design justifications; present design options and tradeoffs to facilitate alignment and decision-making Qualifications ● Bachelor's degree in Mechanical Engineering, or related field ● 3 ~ 7+ years of professional experience in mechanical/product design, preferably involving large complex assemblies ● Strong analytical and problem-solving skills, with a proven ability to identify and implement effective solutions using first principles, modeling, and hands-on experimentations ● Strong CAD proficiency (SolidWorks, Fusion, Onshape, or similar) ● Demonstrated ability to take hardware products from concept through prototyping and into production ● Experience with tolerance stacks, design-for-manufacturing, and geometric dimensioning & tolerancing (GD&T) ● Ability to thrive in a fast-paced startup environment-proactive, self-directed, resourceful ● Strong communication skills and ability to collaborate effectively across disciplines Desired Experience ● Takes ownership and responsibility for current and past results ● Takes risks, learns from mistakes, and drives to improve the performance of oneself, others, and the company ● Experience working with cast or molded materials, especially ceramics and composites ● Familiarity with structural analysis techniques and tools (FEA and hand calcs) ● Experience designing components for modular building systems, architectural hardware, or complex mechanical assemblies ● Hands-on prototyping experience: machining, molding, 3D printing, fabrication, or test rig development Benefits ● Base pay between $125,000 and $170,000, based on experience and qualifications ● Comprehensive healthcare coverage ● Stock options ● Health savings account ● 401k ● Opportunity to join a conscious, future-building team

Meta Platforms, Inc. (Meta), formerly known as Facebook Inc., builds technologies that help people connect, find communities, and grow businesses. When Facebook launched in 2004, it changed the way people connect. Apps and services like Messenger, Instagram, and WhatsApp further empowered billions around the world. Now, Meta is moving beyond 2D screens toward immersive experiences like augmented and virtual reality to help build the next evolution in social technology. To apply, click “Apply to Job” online on this web page. Optical Engineer Responsibilities: Collaborate with Meta engineers on the next generation optical communication technology with a particular focus on the testing of optical modules and subsystems for Data Center applications. Work in a collaborative environment across Meta teams including SW, Thermal, Mechanical, and EE. Develop test and simulation methodologies relevant for next-generation, high-speed optical technologies. Develop automation practices and solutions for lab testing. Lead new optical communication NPI programs, working closely with optics vendors and ODMs. Interface with the industry and contribute to the RFI/RFP process for optical solutions. Communicate complex optical hardware requirements to non-experts both internally and to industry-facing stakeholders. Minimum Qualifications: Master's degree (or foreign degree equivalent) in Electrical Engineering, Computer Engineering, Optical Engineering, Physics, or a related field and 3 years of experience in the job offered or in a computer-related occupation Requires 3 years of experience in the following: Imaging optics for both photographic and computer vision applications Both sequential and non-sequential optical design software (e.g. Zemax, Code V, LightTools, FRED and/or ASAP) Image quality evaluation, imaging sensor operation and characterization, stray light modeling and analysis, camera module or lens testing and characterization, imaging and illumination optics design and manufacturing Theoretical analysis using MATLAB, Python or similar programs Statistical analysis using MATLAB Public Compensation: $181,390/year to $189,200/year + bonus + equity + benefits Industry: Internet Equal Opportunity: Meta is proud to be an Equal Employment Opportunity and affirmative action employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender, gender identity, gender expression, transgender status, sexual stereotypes, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. We also consider qualified applicants with criminal histories, consistent with applicable federal, state and local law. Meta participates in the E-Verify program in certain locations, as required by law. Please note that Meta may leverage artificial intelligence and machine learning technologies in connection with applications for employment. Meta is committed to providing reasonable accommodations for candidates with disabilities in our recruiting process. If you need any assistance or accommodations due to a disability, please let us know at accommodations-ext@fb.com. #J-18808-Ljbffr

About the Team The Scaling team is responsible for the architectural and engineering backbone of OpenAI's infrastructure. We design and deliver advanced systems that support the deployment and operation of cutting‑edge AI models. Our work spans system software, networking, platform architecture, fleet‑level monitoring, and performance optimization. As part of the Stargate initiative, the Industrial Compute team's mission is to build and operate the foundation that powers our research and products. To deliver on this mission, there is a critical need for advanced lab infrastructure and capabilities to perform rapid prototyping, targeted and end‑to‑end testing, and system qualification across the full software and hardware stack to ensure readiness and stability for fast and smooth deployment of our large‑scale clusters. About the Role We are seeking an experienced engineer to lead advanced R&D, rapid prototyping, and build‑out of in‑house lab infrastructure to support system bring‑up, testing, and qualification for next‑generation systems. In this role, you will: You will work closely with the research, fleet, silicon, hardware health, and external vendors and partners to accelerate system qualification, increase deployment velocity, and improve platform and fleet robustness at scale. You will focus on detailed evaluation and systematic testing of early hardware, including servers, racks, NICs, switches, chips, optics, transceivers, and other lab prototype equipment. Your engineering work will span a broad range of software (systems, firmware, RDMA, collectives, cluster provisioning, orchestration, etc.) and/or hardware solutions (e.g., FPGA development) to manage lab infrastructure, support bring‑up activities and perform extensive characterizations of new hardware through microbenchmarking, fault injection, impairment modelling, localized stress testing, and end‑to‑end evaluations. This role is based in San Francisco, CA or Seattle, WA. We use a hybrid work model of 3 days in the office per week and offer relocation assistance to new employees. You might thrive in this role if you: Bachelor's Degree in Computer Science or a related field Strong background in system architecture, large‑scale distributed systems and AI/HPC networking expertise (high performance multipath transport protocols, RDMA, RoCE, Infiniband) 5+ years of software development experience in C/C++ and Python Experience developing and running large‑scale distributed AI workloads Hands‑on lab experience with datacenter hardware (racks, servers, switches, NICs, accelerators, etc.) Experience with low‑level software and/or FPGA hardware development (e.g., firmware or RTL) About OpenAI OpenAI is an AI research and deployment company dedicated to ensuring that general‑purpose artificial intelligence benefits all of humanity. We push the boundaries of the capabilities of AI systems and seek to safely deploy them to the world through our products. AI is an extremely powerful tool that must be created with safety and human needs at its core, and to achieve our mission, we must encompass and value the many different perspectives, voices, and experiences that form the full spectrum of humanity. We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic. For additional information, please see OpenAI's affirmative action and equal employment opportunity policy statement. Background checks for applicants will be administered in accordance with applicable law, and qualified applicants with arrest or conviction records will be considered for employment consistent with those laws, including the San Francisco Fair Chance Ordinance, the Los Angeles County Fair Chance Ordinance for Employers, and the California Fair Chance Act, for US‑based candidates. For unincorporated Los Angeles County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: protect computer hardware entrusted to you from theft, loss or damage; return all computer hardware in your possession (including the data contained therein) upon termination of employment or end of assignment; and maintain the confidentiality of proprietary, confidential, and non‑public information. In addition, job duties require access to secure and protected information technology systems and related data security obligations. To notify OpenAI that you believe this job posting is non‑compliant, please submit a report through this form. No response will be provided to inquiries unrelated to job posting compliance. We are committed to providing reasonable accommodations to applicants with disabilities, and requests can be made via this link. OpenAI Global Applicant Privacy Policy At OpenAI, we believe artificial intelligence has the potential to help people solve immense global challenges, and we want the upside of AI to be widely shared. Join us in shaping the future of technology. #J-18808-Ljbffr

About Commonwealth Fusion Systems: Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy. Combining decades of research, top talent, and new technologies, we're designing and building commercially viable fusion power plants. And working with policymakers and suppliers to build the energy industry of the future. We're in the best position to make it happen. Since 2018, we've raised nearly $3 billion in capital, making us the largest and leading private fusion company in the world. Now we're looking for more thinkers, doers, builders, and makers to join us. People who'll bring new perspectives, solve tough problems, and thrive as part of a team. If that's you and this role fits, we want to hear from you. Principal Mechanical Engineer We're looking for a Principal Mechanical Engineer to join our R&D and equipment design team to help build the next generation of thin‑film deposition technology. The Principal Mechanical Engineer will be responsible for the design and implementation of advanced R&D equipment and complex machinery. This role requires strong technical expertise, procedural discipline, and the ability to collaborate across engineering and technology functions to ensure safe, reliable, and high‑performance equipment. If you enjoy working on complex design problems, mentoring others, and solving problems in a collaborative, fast‑paced environment, this is your opportunity to make an impact. What you'll do: Lead the design and implementation of advanced R&D equipment for thin‑film processing, including ownership of key mechanical modules and sub‑systems Define system level requirements and drive innovative design concepts to meet these requirements Lead design reviews for overall mechanical system and key mechanical subsystems Generate and maintain interfaces with other engineering subsystems Report on and be accountable for project progress to stakeholders Work effectively within a multi‑disciplinary team of top scientists and engineers Mentor engineering staff for effectiveness and delivery of on‑time & in‑spec outcomes Get things done: drive projects, consistently deliver, act with speed What we're looking for: Master's degree in Mechanical Engineering or related field (or equivalent industrial experience) 15+ years of experience with at least 7 years of experience working as a principal mechanical design engineer or engineering team lead in a relevant context: design and implementation of R&D systems and manufacturing equipment Ability to conceive of novel solutions for complex engineering systems in challenging environments Expertise with 3D modeling; preferred experience with SolidWorks and NX Experience with COMSOL, ANSYS or other FEA tools Ability to select and qualify vendors for components or subsystems Demonstrated ability to lead in either direct or matrix structures Strong verbal and written communication skills and a dedication to high‑quality documentation Bonus points for: Ph.D. in Mechanical Engineering or related field (or equivalent industrial experience) Prior success building first‑of‑kind or experimental tools for material science or semiconductor R&D Familiarity in applying Semi‑S8, ASME, ACI, ASTM, and other mechanical standards to design solutions Experience with the operation of equipment in a manufacturing environment Must‑have Requirements: Ability to occasionally lift up to 50 lbs Perform activities such as stooping, climbing, standing, or sitting for extended periods of time Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics Willingness to travel or work required nights/weekends/on‑call occasionally $150,000 - $225,000 a year Benefits Competitive compensation with equity 12.5 Company‑wide Holidays Flexible vacation days 10 sick days Generous parental leave policy Health, dental, and vision insurance 401(k) with employer matching Professional growth opportunities Team‑building activities #LI‑Onsite At CFS, we excel in fast‑paced environments, driven by our values of integrity, execution, impact, and self‑critique. As we grow, we're eager to bring on mission‑driven folks who offer diverse perspectives and fresh ways to tackle challenges. We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law. This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws #J-18808-Ljbffr

A cutting-edge AI lab in San Francisco is seeking experienced end-to-end engineers to join their small, talent-dense team. The role involves building innovative software products, enhancing user experiences, and collaborating closely with product teams. Ideal candidates should have experience with Python, Typescript, and React. Strong achievers who thrive in fast-moving environments are encouraged to apply. #J-18808-Ljbffr

About Atomic Semi Atomic Semi is building a small, fast semiconductor fab. It's already possible to build this with today's technology and a few simplifications. We'll build the tools ourselves so we can quickly iterate and improve. We're building a small team of exceptional, hands‑on engineers to make this happen. Mechanical, electrical, hardware, computer, and process. We'll own the stack from atoms to architecture. Our team is optimistic about the future and we want to continue pushing the limits of technology. Smaller is better. Faster is better. Building it ourselves is better. We believe our team and lab can build anything. We've set up 3D printers, a wide array of microscopes, e‑beam writers, general fabrication equipment - and whatever is missing, we'll just invent along the way. Atomic was founded by Sam Zeloof and Jim Keller. Sam is best known for making chips in his garage, and Jim has been a leader in the semiconductor industry for the past 40 years. About the team The positioning team is responsible for designing, prototyping and building semiconductor fab equipment and subsystems related to lithography, motion and metrology. About the role The electron optics engineer is a hands‑on design role that will be directly involved with prototyping and production of precision beam transport systems for Atomic Semi's custom semiconductor tooling. In this position, you would be applying optical theory to the charged particle domain to evaluate design concepts, and then taking them from white board to reality. We are seeking candidates with experience rapidly prototyping components for complex systems, and a first‑principles mindset to analysis and design. Expect working through difficult design challenges, rapid iteration, lab experiments/collection of data, debugging hardware, and making exciting discoveries. Responsibilities Design, analysis, and bring‑up of electron‑optical systems and related equipment including electron sources, lenses, detectors, beam steering, vacuum chambers, etc. Create innovative solutions utilizing novel electron optical techniques Electrostatics simulation, mechanical design, high vacuum, ray optics analysis. Gathering requirements for designs to facilitate successful bring‑up of new semiconductor tooling Interface with mechanical, electrical, manufacturing, and process engineers Required Experience A degree in Physics, Electrical Engineering, or something similar 2+ years of hands‑on work with precision electron or ion beam systems is required (designing, modeling, building, testing) 5+ years total experience working on complex hardware systems, either in industry or research A strong understanding of charged particle optics and electrostatic/magnetic fields Comfortable working with high vacuum systems - you know your way around chambers, pumps, and component selection Confident in mechanical CAD Nice to have Experience with electrostatics simulation tools like SIMION, COMSOL, CPO2D, CPO3D Electronics skills: usage of oscilloscopes, basic circuit design, grounding + shielding Light‑based optics experience Experience with beam profiling or diagnostics Have done tolerance analysis of electron beam systems Working at Atomic Semi We're an early‑stage hardware startup with solid funding, world‑class advisors, and a lab/office in San Francisco, CA. Compensation Atomic Semi is committed to fair and equitable compensation practices. The annual salary range for this role is $133,000 - $200,000. Compensation is determined based on your qualifications and experience. Our total compensation package also includes generous equity in Atomic Semi. Benefits Medical, Dental, and Vision insurance Generous Paid Time Off inclusive of Holidays and Sick Time Visa Sponsorship Life and Disability Insurance Paid Parental Leave 401(k) retirement plan Weekly Learning & Development opportunities Commuter Benefits including Parking and Late Night Uber rides from the office Lunches daily, Dinners 3x per week, Stocked Office Kitchen with Snacks and Spindrifts We are an equal‑opportunity employer and do not discriminate on the basis of race, religion, national origin, gender, sexual orientation, age, veteran status, disability or other legally protected statuses. Export Control Analysis This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant's capacity to serve in compliance with U.S. export controls. #J-18808-Ljbffr

A leading mechanical contractor specializing in HVAC and Plumbing systems for commercial, industrial, and institutional construction projects is seeking a Senior Design Engineer to join their growing engineering team. This is a high-impact role responsible for developing mechanical system designs, supporting construction operations, and delivering high-quality engineered solutions for complex building projects. If you're a mechanical engineer who enjoys solving technical challenges, collaborating with field teams, and influencing project success from concept through construction, we want to speak with you. What You'll Do Lead mechanical (HVAC & plumbing) design efforts for new construction and renovation projects across commercial, industrial, healthcare, education, and specialty markets. Prepare load calculations, equipment selections, and detailed design documents including plans, specifications, and technical reports. Perform design reviews, value-engineering evaluations, and constructability assessments to optimize system performance and project cost. Support project managers, estimators, and field teams with design clarifications, submittal reviews, RFIs, and technical problem-solving during construction. Collaborate with architects, structural engineers, civil engineers, and trade partners to ensure coordinated, code-compliant design packages. Work closely with field installation teams to confirm feasibility, identify improvements, and support installation sequencing. Lead system analysis for energy performance, system efficiency, life-cycle costing, and equipment sizing. Ensure all designs meet building codes, mechanical standards, and company quality expectations. Mentor junior engineers, assist with design standards development, and help elevate overall engineering capabilities. What You Bring Bachelor's degree in Mechanical Engineering or related field; PE license preferred. 5-10+ years of experience designing HVAC and plumbing systems for building construction projects. Strong knowledge of mechanical codes, building codes, and industry standards (IMC, IPC, ASHRAE, NFPA). Proficiency with engineering design tools such as Revit, AutoCAD, Trane Trace / HAP, and industry-specific calculation software. Experience working for a mechanical contractor or MEP consulting firm strongly preferred. Ability to interpret construction drawings and collaborate closely with field installation teams. Strong communication skills with the ability to interface directly with clients, contractors, and internal stakeholders. Self-driven, detail-oriented, and capable of managing multiple projects concurrently. 🔹 Why Join Us? Opportunity to influence mechanical system design across major construction projects. Collaborative, team-oriented culture where engineering and field teams work hand-in-hand. Competitive compensation and benefits package. Strong pipeline of exciting projects and long-term growth opportunities.

A tech startup focused on CAD intelligence is seeking a talented individual to own the creation and refinement of computational geometry features using Python and C++. You'll collaborate closely with engineers and gain insights from customers to shape the product roadmap. The role offers a generous equity package, opportunities for growth, and relocation assistance to San Francisco. Excellent communication skills and experience with reinforcement learning algorithms are required. #J-18808-Ljbffr

Mill is all about answering a simple question: how can we prevent waste? Less waste can save time, money, energy, maybe even our planet. And there's no better place to start than food. Food waste is one of the most solvable climate problems facing us today. Plus, our trash really stinks. It's gross, heavy, and our least favorite chore. At Mill we are striving to build a better environment for all, as we take on climate and kitchen change. As a member of Mill's Product Design Engineering team you will be part of a cross functional team to design, validate and ship Mill's hardware products. You will work closely with other members of the PD team as well as cross functional groups including Industrial Design, Electrical Engineering, Reliability, Product Management and Operations. Objectives of this role: Design mechanical systems to balance complex tradeoffs between cross functional teams including Industrial Design, Electrical Engineering, Reliability, Product Management and Operations Generate detailed CAD models, specifications and documentation Prototype, Test and Analyze component and system designs Validate and system performance and iterate designs to achieve targets Create predictive models and correlate with real world performance Perform root cause analysis of performance failures and drive corrective actions Work directly with the supply chain to ensure parts are properly manufactured and assembled. Qualifications BS degree in mechanical engineering or equivalent 2 + years experience working in mechanical product design. Consumer Electronics or Home Appliance industries are preferred Expertise in CAD modeling, experience with NX is preferred. Detailed knowledge of plastic and metal part manufacturing processes Solid understanding of product design concepts including Design for Manufacturing (DFM), Design for Assembly (DFA), Tolerance Analysis Demonstrated ability to apply engineering fundamentals to find simple solutions to complex problems A strong desire to work hands-on Strong communication skills The estimated base salary range for this position is $150k to $175k, which does not include the value of benefits or a potential equity grant. A wide range of factors are considered in making compensation decisions, including but not limited to skill sets, market conditions, experience and training, licensure and certifications, and business and organizational needs. #J-18808-Ljbffr

A blockchain company in San Francisco is seeking a candidate to innovate the Tempo protocol and collaborate with industry experts. The ideal applicant will possess substantial experience in protocol research, particularly regarding consensus and scaling, as well as strong abilities in Solidity. This role emphasizes the design of new features while addressing privacy and efficiency, contributing to the evolution of payment solutions in the crypto space. #J-18808-Ljbffr

A high-growth healthtech startup is seeking a Founding Engineer to build innovative AI agents that automate patient recruitment for clinical trials. The role involves developing scalable solutions that can significantly reduce costs in drug development. Ideal candidates will have a strong background in AI and software systems, ready to make impactful contributions in a high-stakes environment. Join us to enhance human health through technology. #J-18808-Ljbffr

A global technology company based in California seeks a talented individual to design and develop Deep Learning architectures. This role involves creating intelligent experiences through innovative Machine Learning solutions, collaborating with various teams, and requires a strong programming background. Candidates should hold a Bachelor's degree in Computer Science or similar, with familiarity in Python, Objective C, or Swift and relevant project experience. Competitive salary and extensive benefits offered. #J-18808-Ljbffr

The Frontier Evals team builds north star model evaluations to drive progress towards safe AGI/ASI. This team builds ambitious evaluations to measure and steer our models, and creates self-improvement loops to steer our training, safety, and launch decisions. Some of the team's open-sourced evaluations include SWE-bench Verified, MLE-bench, PaperBench, and SWE-Lancer, and the team built and ran frontier evaluations for GPT4o, o1, o3, GPT 4.5, ChatGPT Agent, and GPT5. If you are interested in feeling firsthand the fast progress of our models, and steering them towards good, this is the team for you. About you We seek exceptional research engineers that can push the boundaries of our frontier models in the finance domain. We are looking for those who will help shape AI evaluations of financial reasoning and related capabilities, and will own individual threads within this endeavor end-to-end. Responsibilities Identify important model capabilities, skills, and behaviors that are crucial to financial workflows, and design methods to quantify performance in these areas Own and pursue a research agenda to identify an important model capability (especially as it relates to financial reasoning) and build evals to measure it Continuously refine evaluations of frontier AI models to assess the extent of frontier capabilities Requirements Have strong engineering and statistical analysis skills (with at least 2-3 years of full-time technical experience) Be passionate about Excel spreadsheets and/or finance Be detail-oriented and thorough Be a team player / willing to do a variety of tasks to move the team forward Be passionate and knowledgeable about AGI/ASI measurement Be able to operate effectively in a dynamic and extremely fast-paced research environment as well as scope and deliver projects end-to-end Nice to have Prior background / domain expertise in finance, especially investment banking or private equity (e.g., through internships, prior jobs) An ability to work cross-functional Excellent communication skills About OpenAI OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity. We push the boundaries of the capabilities of AI systems and seek to safely deploy them to the world through our products. AI is an extremely powerful tool that must be created with safety and human needs at its core, and to achieve our mission, we must encompass and value the many different perspectives, voices, and experiences that form the full spectrum of humanity. We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic. For additional information, please see OpenAI's Affirmative Action and Equal Employment Opportunity Policy Statement. Qualified applicants with arrest or conviction records will be considered for employment in accordance with applicable law, including the San Francisco Fair Chance Ordinance, the Los Angeles County Fair Chance Ordinance for Employers, and the California Fair Chance Act. For unincorporated Los Angeles County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: protect computer hardware entrusted to you from theft, loss or damage; return all computer hardware in your possession (including the data contained therein) upon termination of employment or end of assignment; and maintain the confidentiality of proprietary, confidential, and non-public information. In addition, job duties require access to secure and protected information technology systems and related data security obligations. To notify OpenAI that you believe this job posting is non-compliant, please submit a report through this form. No response will be provided to inquiries unrelated to job posting compliance. We are committed to providing reasonable accommodations to applicants with disabilities, and requests can be made via this link. OpenAI Global Applicant Privacy Policy At OpenAI, we believe artificial intelligence has the potential to help people solve immense global challenges, and we want the upside of AI to be widely shared. Join us in shaping the future of technology. #J-18808-Ljbffr

A cutting-edge semiconductor startup in San Francisco is seeking an experienced electron optics engineer to design and prototype precision beam transport systems for semiconductor tooling. Ideal candidates have extensive hands-on experience with electron or ion beam systems and a solid understanding of charged particle optics. The role offers a competitive salary ranging from $125,000 to $188,000, along with generous equity and benefits package, including health insurance and paid time off. #J-18808-Ljbffr

A leading fusion energy company in Milpitas is seeking a Principal Mechanical Engineer to join their R&D team focused on advanced thin-film deposition technology. Responsibilities include designing R&D equipment, leading complex projects, and mentoring engineering staff. The ideal candidate will have a Master's in Mechanical Engineering, over 15 years of experience in mechanical design, and familiarity with tools such as SolidWorks and ANSYS. Competitive salary and benefits are offered, including 12.5 holidays and flexible vacation days. #J-18808-Ljbffr

Tempo is a layer-1 blockchain purpose-built for stablecoins and real-world payments, born from Stripe's experience in global payments and Paradigm's expertise in crypto tech. Tempo's payment-first design provides a scalable, low-cost predictable backbone that meets the needs of high-volume payment use cases. Our goal is to move money reliably, cheaply, and at scale. Our north star is simplicity for users: fintechs, traditional banks, merchants, platforms, and anyone else looking to move their payments into the 21st century. We're building Tempo with design partners who are global leaders in AI, e-commerce, and financial services: Anthropic, Coupang, Deutsche Bank, DoorDash, Mercury, Nubank, OpenAI, Revolut, Shopify, Standard Chartered, Visa, and more. We're a team of crypto-optimists, building the infrastructure needed to bring real, substantial economic flows onchain. Our team primarily works in-person out of our San Francisco and NYC offices. We like to move fast and swing for the fences - join us! The Role This person would work closely with researchers at Tempo, Paradigm, Stripe, and our design partners to invent the future of the Tempo protocol. Responsibilities Design new protocol-level features to solve problems like privacy, capital efficiency, and scaling Pressure-test ideas with the rest of the team and the community Prototype reference implementation into new features and ship into production Explain novel inventions to users, partners, and the world Qualifications Experience with protocol research on topics like consensus, scaling, cryptography, liquidity, and MEV Demonstrated experience shipping production-level features for DEXs, L1s, L2s, or other onchain products. Ability to write, test, and optimize Solidity code. Deep understanding of EVM blockchains, including features like account abstraction and gas metering Interest in using crypto to solve real-world problems around payments Attributes Razor-sharp thinker with precise command of language Concise, evidence-based storytelling ability Excellent organizational and logistical skills Intense curiosity and open-mindedness Scrappiness; willingness to roll up sleeves Growth mindset #J-18808-Ljbffr

A leading AI research company in San Francisco seeks a talented architecture team member to enhance its flagship models. Ideal candidates will have a strong understanding of LLM architectures and experience with deep learning. The role offers a hybrid work model of 3 days in the office, alongside relocation assistance. This position presents an exciting opportunity to contribute to groundbreaking AI advancements. #J-18808-Ljbffr

Atomic Semi is building a small, fast semiconductor fab. It's already possible to build this with today's technology and a few simplifications. We'll build the tools ourselves so we can quickly iterate and improve. We're building a small team of exceptional, hands‑on engineers to make this happen. Mechanical, electrical, hardware, computer, and process. We'll own the stack from atoms to architecture. Our team is optimistic about the future and we want to continue pushing the limits of technology. Smaller is better. Faster is better. Building it ourselves is better. We believe our team and lab can build anything. We've set up 3D printers, a wide array of microscopes, e-beam writers, general fabrication equipment - and whatever is missing, we'll just invent along the way. Atomic was founded by Sam Zeloof and Jim Keller. Sam is best known for making chips in his garage, and Jim has been a leader in the semiconductor industry for the past 40 years. About the team The positioning team is responsible for designing, prototyping and building semiconductor fab equipment and subsystems related to lithography, motion and metrology. About the role The electron optics engineer is a hands‑on design role that will be directly involved with prototyping and production of precision beam transport systems for Atomic Semi's custom semiconductor tooling. In this position, you would be applying optical theory to the charged particle domain to evaluate design concepts, and then taking them from white board to reality. We are seeking candidates with experience rapidly prototyping components for complex systems, and a first‑principles mindset to analysis and design. Expect working through difficult design challenges, rapid iteration, lab experiments/collection of data, debugging hardware, and making exciting discoveries. Responsibilities Design, analysis, and bring‑up of electron‑optical systems and related equipment including electron sources, lenses, detectors, beam steering, vacuum chambers, etc. Create innovative solutions utilizing novel electron optical techniques Electrostatics simulation, mechanical design, high vacuum, ray optics analysis. Gathering requirements for designs to facilitate successful bring up of new semiconductor tooling Interface with mechanical, electrical, manufacturing, and process engineers Required Experience A degree in Physics, Electrical Engineering, or something similar 2+ years of hands‑on work with precision electron or ion beam systems is required (designing, modeling, building, testing) 5+ years total experience working on complex hardware systems, either in industry or research A strong understanding of charged particle optics and electrostatic/magnetic fields Comfortable working with high vacuum systems - you know your way around chambers, pumps, and component selection Confident in mechanical CAD Nice to have Experience with electrostatics simulation tools like SIMION, COMSOL, CPO2D, CPO3D Electronics skills: usage of oscilloscopes, basic circuit design, grounding + shielding Light‑based optics experience Experience with beam profiling or diagnostics Have done tolerance analysis of electron beam systems Working at Atomic Semi We're an early‑stage hardware startup with solid funding, world‑class advisors, and a lab/office in San Francisco, CA. Compensation Atomic Semi is committed to fair and equitable compensation practices. The annual salary range for this role is $125,000 - $188,000. Compensation is determined based on your qualifications and experience. Our total compensation package also includes generous equity in Atomic Semi. Benefits Medical, Dental, and Vision insurance Generous Paid Time Off inclusive of Holidays and Sick Time Visa Sponsorship Life and Disability Insurance Paid Parental Leave 401(k) retirement plan Weekly Learning & Development opportunities Commuter Benefits including Parking and Late Night Uber rides from the office Lunches daily, Dinners 3x per week, Stocked Office Kitchen with Snacks and Spindrifts We are an equal‑opportunity employer and do not discriminate on the basis of race, religion, national origin, gender, sexual orientation, age, veteran status, disability or other legally protected statuses. Export Control Analysis This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant's capacity to serve in compliance with U.S. export controls. #J-18808-Ljbffr

A semiconductor startup in San Francisco seeks an electron optics engineer to prototype precision beam transport systems. This hands-on role involves designing electron-optical systems and rapidly iterating on complex hardware. The ideal candidate has a degree in Physics or Electrical Engineering, with at least 2 years of relevant experience and strong skills in CAD and charged particle optics. Competitive salary and benefits offered. #J-18808-Ljbffr