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Saphira AI

Founding Full-Stack Engineer

San Francisco, CA
Senior (5-8 years) Level
Posted 6/15/2026

About this role

We are looking for a full-stack engineer to join the team as a founding engineer. The ideal candidate is someone with 5+ years of experience across both frontend and backend with ownership and evidence of architecting the technical foundations of products that drove significant business value. You’d interface directly with the co-founders and would be treated as an equal as helping to drive these outcomes at Saphira. You are comfortable operating across frontend, backend, and cloud infrastructure. You have experience with software architecture, design best practices, and building solutions across the entire stack.  You have experience building software systems from ground up in 0 - 1 situations, shipping solutions to production, and owning the full software development lifecycle. Tech Stack: JavaScript / TypeScript, React, Python, Tailwind, Redis, Celery, Docker, AWS  Bonus points:  Ex-founder Built product as a founding engineer Worked at a software for hardware company or hardware company About the Interview Fit / behavioral interview (30 minutes) Technical deep dive (45 minutes) Paid work trial period

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