Founding Engineer
$150k - $250kAgentMail (YC S25)
AgentMail is building the identity and communication infrastructure for AI agents, starting with email. We are looking for a Founding Engineer with backend and infra focus to architect systems for agents as the end users. Responsibilities Design APIs that are intuitive for both humans and LLMs Architect high-throughput, low-latency systems Write and review clean, idiomatic code Maintain comprehensive documentation Qualifications Has prior work experience (internships count) as an engineer at a tech company Has shipped software used in production by real users (work or personal projects) Compensation $150k - $250k base salary 0.5% - 2.0% equity Breakfast, lunch, and dinner (Doordash) Medical, dental, and vision insurance Equinox membership #J-18808-Ljbffr
- ...Description Join Hire Hangar and work with fast-growing global companies while building a long-term career. Job Title: Founding Production Systems Engineer Location | On-Site — San Francisco, CA Time Zone | PST Role Overview: We are seeking a Founding...Suggested
- ...Description Join Hire Hangar and work with fast-growing global companies while building a long-term career. Job Title| Founding Systems Engineer (Performance) Location | On-Site — San Francisco, CA Time Zone | PST Role Overview: We are seeking a Founding...Suggested
- Peregrine Technologies is seeking a founding member of the Business Technologies team in San Francisco to design scalable internal infrastructure, not just modify existing systems. You’ll be the second hire, partnering with the TPM Lead to define architecture across identity...Suggested
- Peregrine Technologies in San Francisco is seeking a founding member of the Business Technologies team. You will design internal infrastructure... ...IT, Security, and business teams. The role emphasizes an engineering-first approach, IaC, and cross-functional collaboration to...Suggested
- Peregrine Technologies is seeking a founding member for its Business Technologies team in San Francisco. You will help design internal infrastructure, automate IT workflows, and scale platforms across identity, SaaS, and cloud environments. You will partner with IT, Security...Suggested
- Socket.dev is seeking a founding Mechanical Engineer to own the design and integration of a reusable reentry vehicle for Dispatch, from CAD to qualification testing and launch. You’ll handle structure, deployment mechanisms, and payload integration while performing hands...
- Peregrine Technologies is building the core internal platform to automate and scale IT operations. This founding role focuses on architecting and delivering infrastructure with emphasis on identity, SaaS, and cloud integrations. You will work directly with IT, Security...
- ...science and manufacturing that isn't possible on Earth, and we're doing it without humans in the loop. We're looking for a Founding Mechanical Engineer to own the design and development of our robotic arm from concept through flight-ready hardware. This is a high-...Permanent employment
$250k - $380k
Base pay range $250-380k Needl Owner - Helping tech startups scale Founding Hardware Engineer (Stealth Robotics Startup) About Us We’re a tiny, fast-moving team building autonomous systems for heavy industrial machines. We retrofit existing equipment with a plug-and-...Full timeLive outRemote workVisa sponsorshipRelocation package$500 per month
...DESCRIPTIONThis company handles millions of calls per month and needs an engineer who has worked at that scale before and knows how to build... ...sub-100 milliseconds.You will work on-site directly with the founding team, contributing across architecture, infrastructure, and...H1b$130k - $170k
A tech-driven event planning company seeks a Founding Engineer to manage full-stack development and enhance their AI platform. The ideal candidate has experience in modern frameworks and exhibits adaptability in dynamic settings. Responsibilities include expanding the venue...- Mentum (Acquired by Nuvocargo) is seeking a Founding Engineer in San Francisco, CA to build AI-driven solutions for supply chain automation. This role offers a unique opportunity to shape the future of the product and tackle complex challenges in AI. You will be responsible...
- Oho Group is seeking a Founding Mechanical Engineer in San Francisco to lead the design, build, and testing of complex hardware systems. This position requires a Bachelor's degree in a related field and hands-on experience with hardware development, with responsibilities...
$130k - $200k
Join us to apply for the Founding Engineer (Systems + ML) role at Partcl . Get AI-powered advice on this job and more exclusive features. This range is provided by Partcl. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more...Full time$150k - $240k
10x Science, based in San Francisco, is looking for a founding engineer to contribute to a high-performance computing platform for AI-powered drug discovery. You'll join a small team and work directly with the founders, taking on significant responsibilities from day one...- Hire Hangar is looking for a Founding Systems Engineer in San Francisco to enhance the performance of their AI video infrastructure product. You will join the founding engineering team focused on optimizing system behavior and performance metrics. The ideal candidate will...
- A cutting-edge AI startup in San Francisco is seeking a Founding Engineer with 4+ years of backend experience. You will design and scale backend systems, mentor junior engineers, and tackle technical challenges in the food-tech space. Ideal candidates will have deep expertise...
- Career Launch is seeking an India Founding Engineer (Computer Vision) who can move quickly in ambiguous environments, delivering clear engineering execution, strong communication, and solid analytical judgment across research, prototyping, and production. This posting is...
- Aseon Labs seeks a Founding Mechanical Engineer to own the physical design of the Aseon Pod from day one. You will make crucial design choices and shepherd hardware from concept to global deployment, with ownership of the platform's mechanical architecture. With 5+ years...
- A pioneering robotics company is seeking a Founding Mechanical Engineer in San Francisco, CA. You will design and develop robotic arms for microgravity environments, leading all aspects from concept to flight-ready hardware. Essential qualifications include a Bachelor'...
- A technology company in San Francisco is seeking a Founding Fullstack Engineer to build scalable systems that automate complex decisions in manufacturing. Ideal candidates will have experience with data-driven agents, strong product sense, and the ability to ship production...Relocation
- Moritz, an AI-native law firm backed by YC, is hiring a Founding Engineer in San Francisco. You will join as a hands-on leader responsible for product building, scaling the team, and shaping engineering processes from day one. You will ship critical features, own delivery...
$285k - $315k
San Francisco Tensor Company is looking for a Founding GPU Compiler Engineer to be instrumental in building the core compilation infrastructure for AI workloads. This role involves designing compilation pipelines and optimizing for various GPU architectures. Join a passionate...$200k - $300k
Fragment Data Technologies is seeking Founding Engineers in San Francisco to design and build foundational architectures for AI agents that resolve procurement exceptions across complex enterprise data. Ideal candidates should have 2-7 years of experience, be comfortable...- Trajectory, based in San Francisco, is seeking a Founding Generalist Engineer to craft the product experience for continual learning. The role involves owning the SDK and API surfaces while working directly with founders and industry-leading partners. Ideal candidates...
- Truss is a regulated fintech company seeking the founding head of risk to design and lead the risk program. The role requires building production risk systems, rules engines, and decisioning platforms to catch fraud, abuse, and loss in production. You will own end-to-end...
$250k - $380k
A stealth robotics startup in San Francisco seeks a Founding Hardware Engineer to design and build autonomy systems for heavy industrial machines. Ideal candidates will have a proven ability to prototype hardware from scratch and thrive in fast-paced environments. Key...- ...Parachute is a Y Combinator S25 startup building an agentic trading platform. As a Founding Engineer, you will work directly with the founders to build production-grade agentic systems, backend infrastructure, and state-of-the-art quantitative trading strategies and backtesting...
$175k - $200k
...About the Role Join an early-stage, Y Combinator-backed AI marketing automation startup as a Founding Engineer (Full-Stack) . You'll be one of the first engineers on the team, taking full ownership of features from concept through deployment - working directly with...Full timeWork at officeRelocationVisa sponsorshipRelocation package- ...Blind Bio is solving for. About the Role As an AI‑focused Software Engineer at Double Blind Bio, you will help build and operate... ...research workflows Experience working in early‑stage startups or founding teams Deep expertise in at least one area of the stack (frontend...Worldwide
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Founding Engineer. Be the first to apply!


