• Weekday AI (San Francisco, CA)
    …Meta, and more, we've raised over $5M to bring this vision to life. About the Role - Founding Full - Stack Engineer As a Founding Full - Stack ... engineering experience with a strong track record of shipping real products. Solid full - stack skills - comfortable working across backend (Python) and frontend… more
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  • Amadeus Search (San Francisco, CA)
    Role: Founding Full - Stack Engineer Employment Type: Full -time, On-site Location: San Francisco, CA Compensation: $170k - $230k base + competitive ... contracts with frontier AI labs , have a 3-person founding team , and are scaling rapidly with strong...the world's top AI research labs. Key Responsibilities Architect full - stack applications with React.js (frontend) and Python… more
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  • Amadeus Search (San Francisco, CA)
    A high-growth AI infrastructure startup is seeking a Founding Full - Stack Engineer to own end-to-end features across the stack . As the fourth ... employee, you'll architect full - stack applications using React.js and Python, deploy scalable infrastructure on AWS/GCP, and help shape the engineering culture.… more
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  • DRH Search (San Francisco, CA)
    A well-funded startup in San Francisco is seeking a founding full - stack engineer to join their team. The role focuses on developing tax optimization ... products for SMBs, requiring a blend of technical expertise and startup experience. Responsibilities include technical vision contribution, feature development, and project ownership. Ideal candidates will have startup experience, a background in CS/AI, and a… more
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  • Datawizz (San Francisco, CA)
    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 with modern frameworks like React and TypeScript, as well as cloud deployment skills. Competitive salary ranges from $50,000 to $500,000… more
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  • Amadeus Search (San Francisco, CA)
    Role: Founding Full - Stack / Platform Engineer Employment Type: Full -time, On-site Location: San Francisco, CA Compensation: $220k - $280k base + ... competitive equity Visa: Not available Company Overview Kaizen builds reinforcement learning environments that allow AI to train from its own experiences instead of relying solely on human-labeled data - a critical step toward autonomous AI and AGI. In just 5… more
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  • Amadeus Search (San Francisco, CA)
    A leading AI technology company is looking for a Founding Full - Stack / Platform Engineer in San Francisco. This role involves developing crucial ... infrastructure, internal tools, and scalable AI training systems. You will support frontier AI research through the creation of reusable systems for rapid development and deployment. The ideal candidate should be skilled in both front-end and back-end… more
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  • Datawizz (San Francisco, CA)
    …to the best model - significantly reducing costs and improving accuracy. The Role As a founding full - stack engineer , you'll own the application layer of ... You might be a great fit if you have experience with: Building full - stack web applications with modern frameworks (React, Next.js, TypeScript, Node.js, etc.)… more
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  • Rockstar (San Francisco, CA)
    A mission-driven healthcare startup in San Francisco is seeking a Founding Engineer ( Full - Stack ) to lead the development of an AI-powered platform. The ... role requires strong skills in TypeScript and React, with responsibilities including end-to-end application development, feature design, and establishing early engineering processes. The ideal candidate has 2-10+ years of experience and is excited to shape the… more
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  • Fabrion (San Francisco, CA)
    A technology startup based in San Francisco is seeking a Founding Engineer ( Full Stack ) to architect and build their platform. This role offers ... systems and AI-native agents. Ideal candidates will have 5+ years in full stack development, experience with modern frameworks, and a passion for building… more
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  • MLabs (San Francisco, CA)
    …help companies scale with the power of AGI. We are seeking a Founding Full Stack AI Engineer to deliver premium‑grade products to our high‑growth ... Full Stack AI Engineer ( Founding ) Location: San Francisco, CA (On‑site) Employment Type: Full ‑time Compensation: $120K - $180K We are a rapidly… more
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  • Maxima (San Mateo, CA)
    A pioneering AI startup in San Mateo is looking for a founding engineer to build their product from the ground up. You will lead full - stack development, ... requires a bachelor's degree in computer science and 4+ years of full - stack experience. Join a mission-driven team to revolutionize accounting processes and… more
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  • Clutch Canada (Beverly Hills, CA)
    A forward-thinking FinTech company in California is looking for a Full - Stack Engineer to become a founding member of their Engineering team. You'll own ... features from inception to production and work cross-functionally with a vibrant engineering group. The ideal candidate is passionate about consumer FinTech and adept at using technologies such as React Native and Node.js. Join us to make meaningful… more
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  • Dryft (San Francisco, CA)
    …world for half a century. Dryft is powering the next. THE ROLE As Founding Fullstack Engineer , you'll be the brain behind Dryft's decision intelligence. ... Are ready to work onsite in SF (we support relocation & visa) TECH STACK FE (TypeScript): React, Chakra UI v3, TanStack Router, TanStack Query, Vite BE (Python):… more
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  • Zero21 (Washington, DC)
    A leading recruitment agency is looking for a Founding Engineer to join a startup that is developing a modern construction management platform. This role offers ... crucial architectural decisions. Ideal candidates have 5+ years of experience in full - stack development, preferably in B2B environments. If you're seeking a role… more
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  • Asystem (San Francisco, CA)
    A well-funded startup in AI marketing is seeking a proactive Full - Stack Software Engineer for a full -time, on-site position in San Francisco. The role ... involves full lifecycle ownership of features, including design and implementation, utilizing technologies like Node.js, TypeScript, and PostgreSQL. Ideal candidates… more
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  • PetsApp (San Francisco, CA)
    A tech startup in California is seeking a Full Stack Engineer leaned towards backend development. This role involves creating infrastructure for their AI ... agents tailored for sales. Candidates should have 2-5 years of relevant experience, be proficient in Python and SQL, and have a minimal understanding of frontend technologies such as React. This position includes a minimum equity grant as part of the… more
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  • Getclera (San Francisco, CA)
    …with founders, influence product direction, and own significant parts of the technology stack . This is an opportunity to make a meaningful impact in a fast-paced ... environment that values ownership and creativity. #J-18808-Ljbffr more
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  • Getclera (San Francisco, CA)
    …You'll build across the entire product surface, from mobile capture to editing pipelines to the orchestration layer connecting it all. This role pairs directly with ... the founders and touches UI, backend, infra, and AI systems whenever the work demands it. Other facts Next.js, React Native, FFmpeg, Remotion, LLM, VLM About Humeo We're building the fastest content-creation engine on earth. You'll own huge chunks of it from… more
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  • Truth Systems (San Francisco, CA)
    …place large amounts of trust in them. We prefer short (or no) meetings, full autonomy, and individualized schedules. Your Mission Over the next 12-18 months, you ... section of our roadmap and ship them from 0 → 1. This includes the full cycle, from idea/client discovery to rollout. Feature outcomes are measured via adoption and… more
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