Founding Full-Stack Engineer
Weekdayworks
This role is for one of our clients. Location: San Francisco (on-site) Experience: 2–8 years Stage: Seed to Series B Role Type: Early hire / founding engineer Why This Role Exists You’ll help build the core product from the ground up. This is a hands‑on role for someone who loves shipping, thrives in ambiguity, and wants ownership over major product surfaces at an early‑stage company. What You’ll Do Build end-to-end product features across frontend and backend Ship quickly in 0-1 environments Design APIs, schemas, and workflows Partner closely with founders, product, and design Improve reliability, performance, and developer experience Establish engineering best practices Use modern AI developer tools to move faster (LLM copilots, agent workflows, testing automation) What We’re Looking For Strong TypeScript, React, and Node.js Experience shipping production web products Startup or founding‑engineer background (or equivalent) Product‑minded builder with high ownership Comfortable working independently in small teams Nice to Have Next.js Postgres / Redis AWS / GCP Experience integrating LLM APIs or AI tooling #J-18808-Ljbffr
$120k - $250k
...Overview Founding Full-Stack Engineer role at Floot (YC S25). Base pay range is provided; your actual pay will be based on skills and experience — talk with your recruiter to learn more. Base pay range $120,000.00/yr - $250,000.00/yr Responsibilities As engineer #1, you...SuggestedFull time- ...a century. Dryft is powering the next. THE ROLE As Founding Fullstack Engineer , you’ll be the brain behind Dryft’s decision intelligence... ...work onsite in SF (we support relocation & visa) TECH STACK FE (TypeScript): React, Chakra UI v3, TanStack Router,...SuggestedRelocation
$135k - $200k
A venture-backed SaaS startup is seeking a Founding Engineer to help build their financial data management solution. As early team member,... ...you will influence the culture and process while working on full stack features. Candidates should have a Bachelor’s degree in computer...SuggestedRemote job$175k - $275k
Carma is hiring a Founding Full‑Stack Engineer to own product surfaces end‑to‑end — from ambiguous problem statement to scoped design to shipped enterprise software. Work on a TypeScript end‑to‑end stack (React, NestJS, PostgreSQL + Prisma, AWS). Ship a feature in the...SuggestedDay shift- ...quoting and order entry, with a long-term vision of transforming operational workflows through AI. We're looking for a Founding Full Stack Engineer to join our team full-time, in person, in San Francisco, CA . What You'll Do Build and scale AI-powered products from...SuggestedFull timeVisa sponsorshipRelocation package
$100k - $150k
Join to apply for the Founding Full Stack Engineer role at Text.ai (YC X25) 2 days ago Be among the first 25 applicants Join to apply for the Founding Full Stack Engineer role at Text.ai (YC X25) Get AI-powered advice on this job and more exclusive features. This range...Full time$150k - $200k
Lane — Founding Full-Stack Engineer Type: Full-time | On-site | San Francisco, CA (North Beach) Compensation: $150,000-$200,000 + 0-2% equity Hiring count: 1 Visa sponsorship: O-1 available; H-1B transfer + OPT supported (see note — outreach template claims no new H-1B...Full timeH1bWork at officeVisa sponsorship- ...revenue. We’re… Talent-dense: 8 people, 6 engineers, 75% ex‑founders. Well‑funded with $6M... ...working solution. Strong programming / full‑stack foundation: comfortable in both backend... ...vibe coding tools. Previous experience founding or working at a high‑growth startup....
$50k
A dynamic AI startup in San Francisco is seeking a founding full-stack engineer to own the application layer of their platform. The role involves building user-facing dashboards, designing APIs, and leading architectural decisions. Ideal candidates will have experience...$150k - $250k
Clera, a Y Combinator-backed AI startup in San Francisco, is looking for a Founding Engineer - Full Stack. This role offers a unique opportunity to shape engineering culture and practices while working on cutting-edge AI tools. Ideal candidates should have at least 1 year...$175k - $275k
CertifiedDevs is seeking a Founding Full‑Stack Engineer in San Francisco to take ownership of product surfaces end-to-end. You'll work on a TypeScript stack including React, NestJS, and PostgreSQL, contributing to features that impact users rapidly. This role demands strong...- A leading tech startup in San Francisco is seeking a Founding Engineer to develop a next-generation visual IDE. This role offers the opportunity to shape product architecture and collaborate closely with founders. Ideal candidates will have 4+ years of software engineering...
$150k
Stealth Startup in San Francisco is seeking a Founding Engineer to shape its innovative sports management platform. The role requires extensive experience in full-stack software development and a passion for sports and community building. This position offers up to $15...- Gauge is hiring a Founding Full-Stack Engineer to join their team in San Francisco. This full-time role involves enhancing their AI-driven analytics system and improving product features based on customer feedback. The ideal candidate should have experience in web development...Full time
$130k - $200k
Quantix Search is looking for a Founding Full Stack Engineer in San Francisco, CA, offering a salary range of $130K-$200K plus equity. This hybrid role involves building AI powered software to enhance collaboration between go-to-market and product/engineering teams. As...- The Role As a Founding Engineer, you’ll work directly with the founders to architect, build, and scale the platform from 0 to 1 . You’ll take full ownership of core features, shape the product roadmap, and drive technical execution in an environment that values speed,...
$150k - $200k
davidjoseph-co in San Francisco is seeking a Founding Full-Stack Engineer to build the financial infrastructure for the agentic web. The role involves significant responsibility from day one, focusing on full-stack ownership and product development across key areas. The...- Stealth Startup is seeking a founding full-stack engineer for an in-person role in San Francisco, CA. You will build AI-powered products, design full-stack features, and work directly with customers to shape the product and engineering culture. As an early hire, you’ll...Visa sponsorship
- A tech startup specializing in LLMs is seeking a Founding Engineer to own end-to-end problem-solving from customer insights to infrastructure. The ideal candidate will be full-stack, comfortable with new engineering tools like React, Python, and AWS, and has a strong design...
- A burgeoning technology firm in San Francisco is seeking a Founding Software Engineer - Full Stack to develop core technology for a last-mile delivery platform. This role involves utilizing a modern tech stack including TypeScript and React, and collaborating closely with...Local area
- Digital Waffle is hiring a Founding Full Stack Engineer to help build an AI platform that transforms military readiness. You will work closely with the founders and military end users, shaping product strategy and engineering culture in a highly-ambitious, early-stage...
- A pioneering AI communication company is seeking a Founding Full-Stack Engineer to lead the development of a revolutionary mobile application. This hands-on role focuses on React Native and Python integration, aiming to reshape how humans communicate in group settings....
- A growing technology startup is seeking a Founding Full-Stack Engineer (React + Supabase) to build and deploy core product features. This is a remote-first role where you'll work closely with the founder, ensuring the overall architecture, performance, and scalability...Remote work
- A leading technology firm in San Francisco is seeking a Founding Full-Stack Software Engineer to manage end-to-end features on their AI-native platform. The role requires engagement in both frontend and backend development, using technologies such as React, Node.js, and...
$150k
About the Role This is a founding engineering opportunity at a Y Combinator Spring 2026 consumer wearable startup operating at the intersection... ...Prototypes are already on users' wrists. As the Founding Full-Stack iOS Engineer, you will own the companion iOS app end-to-end...Remote work- 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...Relocation
- Jack & Jill is seeking a Founding Engineer to join a founding team building AI-driven construction tools in San Francisco. You will own the platform end-to-end, architect high-scale Node/TypeScript services, and ship an Electron-based desktop application. You will integrate...
- About iollo: iollo was founded by Daniel Gomari (PhD Computational Biology, Stanford) and Prof. Mike Snyder (Stanford... ...serverless compute at scale Use AI agents as core engineering tools, not novelties Tech stack: AWS (compute, storage, identity, networking), Python,...
- Can of Soup in San Francisco is looking for a founding full-stack engineer to take ownership of the app surface and the personalized recommendations infrastructure. This position offers a chance to significantly impact our innovative storytelling app. The ideal candidate...
- Infilla in San Francisco is hiring a founding-stage Full-Stack Product Engineer to design and ship features end-to-end, solving housing permitting challenges for government agencies with a modern TypeScript stack. You will own product decisions and technical architecture...
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