Founding Engineer - Full Stack
$150k - $250kClera
Job Description
Job Description
About the Role
A Y Combinator-backed AI startup is looking for a Founding Engineer – Full Stack to join a small founding team at the ground floor. The company operates at the intersection of AI research, product, and engineering — building tools that help brands understand and shape how large language models perceive and represent them. This is a rare opportunity to co-define engineering culture and practices from day one in a fast-moving, high-impact environment.
What You'll DoOwn problems end-to-end — from customer insight and product requirements all the way through research and infrastructure.
Maintain a tight feedback loop with customers and the founding team; ship features quickly and iteratively.
Help define and shape the engineering team's culture, patterns, and best practices.
Continuously explore and reinvent how engineering teams work effectively alongside AI agents.
Required
1+ years of experience on engineering teams (2+ preferred), including at least one stint longer than 18 months in a strong startup or scale-up environment.
Full-stack proficiency — comfortable owning customer-facing UI through to infrastructure.
Hands-on experience with React, Python, Terraform, and AWS .
Experience building agentic systems or working with LLMs in production.
Strong product sense and design instincts; able to translate customer needs into shippable features.
Startup experience or self-driven personal projects that demonstrate initiative and high agency.
Must be a US citizen or have US work authorization (no visa sponsorship for candidates outside the US).
Nice to Have
Scientific or academic research background.
Direct customer-facing experience in a technical role.
Enthusiasm for adopting AI-powered coding and productivity tools.
Salary: $150,000 – $250,000 USD annually (depending on experience)
Early-stage equity
Visa sponsorship available for eligible candidates
This role is on-site in San Francisco, CA . Candidates must be based in or willing to relocate to San Francisco.
- ...Founding Full-Stack Engineer Opportunity Hi, my name is Gabriel and I'm the founder of Y/n. Y/n is an app where you can create, share, and play interactive stories. Today, 100K+ teenagers spend 3+ hours a day in the app playing characters in text stories of their...FullstackRelocation
Can of Soup
San Francisco, CA1 day ago - ...technical team with experience from Scale AI, Uber, and previously founding a successful AI company. We're based in San Francisco, CA, and... .... Experience building production-grade backend / full-stack systems Deep understanding of scalability challenges and good...Fullstack
MangoDesk
San Francisco, CA23 hours ago $500 per month
...millions of calls per month and needs an engineer who has worked at that scale before and... ...under it. This is an architecture-heavy, full-stack role not just backend. You will own... ...You will work on-site directly with the founding team, contributing across architecture,...FullstackH1b- Get Hired. Work From Anywhere. in San Francisco is seeking a founding engineer to join an AI-native platform. You will ship production... ...translate signals into decisions. This role requires strong full-stack skills and startup grit. #J-18808-Ljbffr Get Hired. Work From...Fullstack
- Trajectory, based in San Francisco, is seeking a Founding Generalist Engineer to craft the product experience for continual learning. The role... ...industry-leading partners. Ideal candidates will have strong full-stack engineering skills and experience with AI-powered...Fullstack
- ...Full-Stack Founding Engineer Hiring a full-stack founding engineer to join our team and focused on product engineering and shipping new features. Things You'll Be Working On Architecting and implementing full-stack product features in Typescript/React/Node is...FullstackWork at office
Replo
San Francisco, CA2 days ago - ...Founding Engineer Opportunity With Omi Hi, I'm Nik. I'm looking for a world-class founding engineer to build Omi with me. Omi is AI... ...What You'll Do As the first engineer, you'll: Own the full stack (Flutter/React Native, Python, firmware, BLE, backend, etc —...Fullstack
Omi AI
San Francisco, CA1 day ago - An early-stage AI startup in San Francisco is seeking a Founding Engineer to help architect and build their platform from scratch. This role... ...-level equity. Ideal candidates should be experienced full-stack or backend engineers who are ready to work in a fast-paced environment...Fullstack
- Blumen in San Francisco, CA, seeks a founding GIS Engineer to build and ship GIS architecture for production applications. You will work directly... ...land assessment tools, and the ability to contribute across the full stack of our pioneering platform. #J-18808-Ljbffr BlumenFullstack
$185k - $215k
...side, our AI coordinates the full referral journey: scheduling,... ...experiences and health outcomes. Our founding team pairs deep experience investing in health tech with engineering expertise from Meta and we... ...We are looking for a Full Stack Founding Engineer to help develop...FullstackWork at officeFlexible hoursGrey Matter
San Francisco, CA23 hours ago- ...demand. The Role This is not a typical engineering role. You'll be our founding engineer, with an outsized role in... ...dashboard Work across the stack (TypeScript, React, Next.js, Postgres... ...as we scale. Who We Want Shipping full-stack production-ready products in fast...Fullstack
pear.ai
San Francisco, CA1 day ago - Founding Engineer Job title: Founding Engineer Location: San Francisco, CA (in-person only, relocation available) About the Company They help... ...place. Role Overview They are hiring our Founding Engineer (Full-Stack) to work in-person, 5 days/week, in San Francisco as a...FullstackPrivate practiceWork at officeRelocation
hireVouch
San Francisco, CA1 day ago - tl;dr: Interface is looking for generalist founding engineers (ml, data, full-stack) who are scrappy, push boundaries and have a need to win. We need to work hard and build quick to win. We want people to challenge our ideas and build alternatives. LFG who you are:...FullstackWork at office
Interface
San Francisco, CA23 hours ago $200k
...market investing. As a Senior Software Engineer on Meridian, you'll own the technical... ...through launch and iteration. This is a founding engineer role on a zero-to-one product with... ...from scratch in a 0-1 environment ~ Full-stack generalist or frontend specialist with working...FullstackWork at office2 days per weekAL Talent, Inc. (d/b/a Wellfound)
San Francisco, CA4 days ago- Founding Engineer - Early-Stage AI Startup San Francisco, CA (In-Person Only) Full-Time | Equity + Cash | Early-Stage Stealth Startup About the Role I’m building Xuman.AI,... ...future engineering hires Ideal Candidate Full‑stack or backend‑leaning engineer with strong...FullstackFull time
$130k - $200k
...Founding Engineer – Full Stack (AI x Developer Tools) Location: San Francisco, CA (Hybrid – 4 days/week in person) Compensation: $130,000 – $200,000 base Equity: 0.10% – 1.75% Work Authorization: Open to visa sponsorship in exceptional cases Type: Full-time Start Date...FullstackFull timeImmediate startVisa sponsorshipWork visaAmadeus Search
San Francisco, CA23 hours ago$140k - $200k
...Founding Engineer Opportunity Paratus is redefining how military units stay ready for their most... ...As a founding engineer, you'll own the full product development lifecycle - from deeply... ...Experience with Typescript and full stack web frameworks (Next, Express) Experience...FullstackWork at officeParatus LLC
San Francisco, CA2 days ago- ...emails, spreadsheets and legacy systems. They are hiring a Founding Engineer to work directly with the founders and customers, understand... ...through production deployment. What You’ll Work On You’ll build full-stack, AI-native products using Python, TypeScript and modern...Fullstack
- Berkley Hunt is seeking a Founding Engineer to join as one of the earliest technical hires, building an AI-powered product end-to-end from the ground up. This on-site role in San Francisco offers an opportunity to shape the product with the founders and a lean team. You...Fullstack
$150k - $300k
...expenses, investing, and taxes. Founded in 2025 by a former senior... .... We are hiring a Founding Engineer to become the company's first... ...You will own the architecture, stack, and technical standards across... ...Requirements • 5 or more years of full-stack software-engineering...FullstackFull timeContract workH1bRemote workVisa sponsorshipRaydar Inc
San Francisco, CA3 days ago- ...and held senior product and engineering roles at Meta, Airbnb, and Canva... ...for granted. The role As Founding Engineer, you’ll build the technical... ...tooling, and the engineering stack. Ship end to end — from the... ...we’re looking for Strong full-stack or backend engineering...FullstackNight shiftWeekend work
- ...software from the ground up alongside a small, high-caliber founding team. They're looking for a Founding Engineer to join as one of the earliest technical hires and help build the product end-to-end. This is a full-stack generalist role based onsite in San Francisco (3 days/...FullstackPart time3 days per week
$200k - $400k
...work with teams across the United States to help them hire. Founding Engineer Location - San Francisco, CA (On-site) - On-site role in San... ...internship or early-career experience ~ Strong backend or full-stack engineering background ~ Proven experience shipping production...FullstackInternshipH1bRemote workVisa sponsorshipRecruiting from Scratch
San Francisco, CA3 days ago- A technology company in San Francisco is seeking a Founding Fullstack Engineer to build scalable systems that automate complex decisions in manufacturing... ...sense, and the ability to ship production code across the stack. The role requires onsite work in SF, with a supportive...FullstackRelocation
- ...internet - and Caylex will be the infrastructure powering it. The Role As a Founding Engineer, you’ll play a central role in shaping both our product and engineering culture. You will: Work full-stack across infrastructure, integrations, and user-facing product features....FullstackFull timeWork at office
$200k - $250k
...AI-native law firm handling legal work with same-day turnaround Founding Engineer Salary: $200K - $250K, Equity: 0.30% - 1.00%, Location: San Francisco, CA, US Job type Full-time Role Engineering, Full stack Experience 3+ years Visa US citizen/visa only Skills Amazon Web...FullstackFull time$100k
...that change happen. We have real customer pull. We’re hiring two founding engineers to help turn that pull into exceptional, repeatable customer results. You’ll work across machine learning, full-stack product, forward deployment, and desktop systems. This will be hard...Fullstack$175k - $225k
...Join a fast-moving, early-stage consumer AI startup as a Founding Engineer — a rare, high-impact position working directly alongside... ...enormous scope and ownership. What You'll Do Build across the full application stack alongside the founder, design team, and other engineers....FullstackRemote workVisa sponsorship- About the Role We're looking for founding Machine Learning Engineers (MLEs) to own and improve our core action... ...problems Comfortable working across the stack — our system spans a Chrome extension... ..., Pinecone) and hybrid search Full-stack development experience (TypeScript...Fullstack
- ...years. Location: San Francisco Bay Area. JobType: full-time. We're looking for a highly motivated Founding Engineer to join us at the ground floor and help build our... ...to build integrations, internal tools, and full-stack features when required Own core product features...FullstackFull timeWeekday work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Founding Engineer - Full Stack. Be the first to apply!
