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 is already powering real-world use cases at scale. We move fast, solve complex technical problems, and build for impact.
Location: San Francisco - In-office, 5 days/week
What You'll Do
- Architect and implement full-stack features used by real customers
- Collaborate closely with cross-functional teams to ship fast and iterate often
- Own problems end-to-end - from scoping to production
- Help scale systems, infrastructure, and developer workflows
- Solve open-ended technical and product challenges in a high-speed, high-stakes setting
What We're Looking For
- 4+ years of professional experience as a full-stack engineer, or deep experience in both frontend and backend
- Mastery of TypeScript is required
- Experience with:
- Frontend: React, Next.js, TypeScript
- Backend: Node.js, TypeScript
- Strong product and user instincts - you care about the "why" as much as the "how"
- History of meaningful impact and long tenures at past roles
- Experience in hypergrowth startups (e.g., scaling from 50 to 1000+ employees in a few years) is a big plus
- Bonus: Background working with technical founders or as an early engineer
You Might Be a Fit If You
- Are energized by speed, ownership, and solving hard technical problems
- Can pick up any tool or concept needed to move the product forward
- Have notable achievements inside or outside of work (e.g., side projects, competitions, entrepreneurial experience)