founding engineer full stack Jobs in San Francisco, California

Founding Engineer (Full Stack)
San Francisco, CaliforniaBuild Club Join Build Club - a fast-growing AI startup fresh off a $1.75M oversubscribed pre-seed backed by top investors across Australia and the US (Blackbird, Airtree, Startmate + more). We're building the future of AI education-and we're looking for someone to build it with us....Full Job Details
Founding Senior Software Engineer (Full-stack)
San Carlos, CaliforniaRetell AI About Retell Retell is building the new standard for automating call center communications, including sales, support, customer engagement, and retention calls. Backed by Altman Capital, Y Combinator, and top investors, we've raised a $4.7M seed round and hit $10M ARR in 15...Full Job Details
Founding Engineer
San Mateo, CaliforniaAcceler8 Talent Founding Engineer About the Role We're seeking a Founding Engineer to help shape the future of a fast-moving startup at the intersection of engineering, product, and growth. This is a high-ownership role where you'll wear multiple hats, move quickly, and contribute...Full Job Details
Founding Engineer
Sonoma, CaliforniaAxiom (YC W25) We're building the first platform that lets anyone trade any asset on any chain, already used by 15k+ people daily and at 8 figure ARR. Tech Stack: TypeScript, NextJS, Jotai, TailwindCSS, PostgreSQL, uWebsocketJS Perks: • Own room in our house - all expenses covered • Work...Full Job Details
Founding Engineer
San Mateo, CaliforniaStealth Startup We are building an AI-powered ecosystem that enables personalized care for seniors aging at home. At its core, Vali serves as an intelligent manager transforming how care is delivered and managed - helping home care agencies unlock operational efficiencies and open up...Full Job Details
Founding Engineer ($140k-$220k, 1% to 2.3%)
San Francisco, CaliforniaResonate AI$140000.00 - 220000.00 a year Base $140k-$220k, 1% to 2.3% In person (Financial District, San Francisco, CA) We're building superhuman conversational AI for healthcare. Our first AI product captures missed calls and books appointments with a higher success rate than human receptionists. People love the...Full Job Details
Founding Engineer
Santa Clara, CaliforniaAlexander Chapman$200000.00 - 310000.00 a year We&re partnering with a rapidly growing startup that&s transforming how businesses handle their phone interactions. They&re developing innovative voice-driven solutions to improve customer outreach, support, and engagement-all powered by cutting-edge technology but without...Full Job Details
Founding Engineer
Santa Rosa, CaliforniaParadigm We're looking for experienced generalist founding engineers who thrive in fast-moving startups, and are excited to create an AI native workspace. Qualifications Willingness to work in-person in San Francisco 5-6 days per week Experience building production application layer...Full Job Details
Founding Engineer
San Francisco, CaliforniaOmen Location: San Francisco, Remote (Flexible) About Omen Omen is an AI-native, prospective online-only Registered Investment Adviser on a mission to deliver personalized institutional-grade portfolios to everyday investors. Live product & early traction: Early adopters are...Full Job Details
Full Stack Engineer
Santa Rosa, CaliforniaCulldron Full-Time Full-Stack Software Engineer Culldron - Remote About Culldron Culldron is an early-stage media-tech startup on a mission to rebuild public trust in news. We're creating a crowdsourced platform where every story is time-stamped, location-anchored, and...Full Job Details
Full Stack Engineer
Santa Rosa, CaliforniaIC Resources I'm hiring on behalf of one of the most exciting early stage companies I've come across. A fast growing startup backed by leading investors and led by a world class technical and commercial founding team. We're looking for a backend-leaning Fullstack Software Engineer to...Full Job Details
Founding Design Engineer
Sonoma, CaliforniaParadigm We're looking for experienced full stack design engineers who thrive in fast-moving startups, and are excited to reimagine UX for an AI native workspace. Qualifications Willingness to work in-person in San Francisco 5-6 days per week Experience building and designing...Full Job Details
Founding Engineer - Python or Rust & Clickhouse
Sonoma, CaliforniaUMATR Founding Engineer - Python or Rust & Clickhouse About the Opportunity We're working with an early-stage startup on a mission to reimagine how analytical workloads are processed across large-scale systems. This is a unique opportunity to join as the first engineering hire...Full Job Details
Founding Senior Software Engineer (Backend)
San Carlos, CaliforniaRetell AI About Retell Retell is building the new standard for automating call center communications, including sales, support, customer engagement, and retention calls. Backed by Altman Capital, Y Combinator, and top investors, we've raised a $4.7M seed round and hit $10M ARR in 15...Full Job Details
Founding Engineer
Palo Alto, CaliforniaByTeams We're looking for a founding engineer to join us at ByTeams. Together we will redefine how the best software engineering organizations work together. You will be empowered to drive our product and technical moat development This is an ok salary high equity opportunity. If...Full Job Details
Founding Engineer
Santa Rosa, CaliforniaSidekick Sidekick is hiring a Founding Engineer to join the core team. The real estate industry is undergoing a massive shift, and AI is about to reshape how millions of agents operate daily. Sidekick is first to market with a verticalized solution, has strong early traction, and is...Full Job Details
Full Stack Engineer
San Francisco, CaliforniaHonest Search Senior Full-Stack Software Engineer AI Startup San Francisco (Onsite) We're looking for a Senior Full-Stack Engineer (Individual Contributor) to join a rapidly scaling, AI-first company backed by top-tier investors. Our product is built on cutting-edge machine learning and...Full Job Details
Full Stack Engineer (Next)
San Francisco, CaliforniaHealth Universe At Health Universe, we're on a mission to revolutionize science and medicine. We're seeking an accomplished Full Stack Engineer to join our team to enhance our platform. This role offers the exciting opportunity to work at the intersection of healthcare and AI with a focus...Full Job Details
Full Stack Engineer
Sonoma, CaliforniaStealth Company About Us We're building AI-powered consumer devices that feel magical. Founded by a proven unicorn founder, we're well-funded and creating products that will touch millions of lives. The Role Build beautiful mobile and web experiences that make advanced AI effortless for...Full Job Details
Founding Engineer - Platform & Infrastructure
San Francisco, CaliforniaUMATR Founding Engineer - Platform & Infrastructure About the Opportunity An early-stage startup is seeking a Founding Engineer to lead the design, build, and maintenance of its cloud platform. This foundational role offers the chance to architect and develop all cloud...Full Job Details
Founding Frontend Engineer
Sonoma, CaliforniaStealth Startup Founding Frontend Engineer/Lead Mission-Driven HealthTech / Wellness Startup (Transforming Cancer Care) San Francisco Bay Area (1-2 days a week in-person out of SF) Must have early-stage experience (0 1 or early scale) Build with Purpose. Ship with Impact. Cancer is...Full Job Details
Founding Software Engineer
San Francisco, CaliforniaKey Technology About the Company Ready to shape a game-changing AI startup? Join our elite, We're processing multimodal data - text, images, video, audio - at lightning speed, with $320K ARR in 3 months and a $5M goal by year-end. Backed by Founders Fund ($3.8M seed) from top AI Labs/...Full Job Details
Senior Full Stack Engineer
Sonoma, CaliforniaEdia Edia is a math AI platform that guarantees better outcomes with real-time personalized AI math coaching and MTSS intervention. We are in 100+ school districts all over the country, serving middle and high schoolers. Edia's renowned engineering leader is looking for a Senior...Full Job Details
Senior Embedded & Controls founding engineer
Alameda, CaliforniaNewlight Senior Embedded & Controls founding engineer - Newlight We seek an experienced and detail-oriented Embedded Controls Engineer to design, develop, and optimize our control systems for our hydrogen injection system. The ideal candidate will collaborate with cross-functional...Full Job Details
Full Stack Engineer (Frontend Leaning)
Palo Alto, CaliforniaEternos About Us: Eternos is an AI startup founded by Robert LoCascio in 2024, who was the previous Founder & Previous CEO at LivePerson. Eternos provides realistic AI replicas of individuals that allow people to preserve, share, and interact with their memories and knowledge in...Full Job Details