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Senior Full Stack Engineer

Robert Half | San Francisco, California, United States | 1w ago
$140,000 – $210,000/yr| full-time | on-site | senior | 6+ years
skills: react, next.js, typescript, trpc, python, flask, generative ai, full-stack

We’re seeking a Senior Full Stack Engineer to join an early‑stage startup operating in the generative artificial intelligence domain. This is a highly hands‑on role for an engineer who enjoys building from the ground up, taking ownership of core product features, and working closely with a small, fast‑moving team.

You’ll be designing, developing, and deploying high‑quality product features across a modern, scalable tech stack while helping shape the technical direction of next‑generation AI products. This role is ideal for someone who is passionate and excited about building with GenAI and mentoring junior engineers in a high‑ownership environment. Seeking an opportunity to move into a leadership track and grow a team than this is maybe a great fit for you!

What You’ll Do

  • Design, build, and deploy full‑stack product features across frontend and backend systems
  • Work closely with product and engineering leaders to translate ideas into production‑ready solutions
  • Develop modern frontend applications using React, Next.js, TypeScript, and tRPC
  • Build and maintain backend services in Python (Flask or similar frameworks)
  • Ensure code quality, performance, scalability, and reliability across the application stack
  • Lead projects end‑to‑end with a high degree of ownership and visibility
  • Mentor and support the growth of junior engineers

Qualifications

  • 6+ years of full‑stack engineering experience
  • Strong proficiency in React and TypeScript, experience with tRPC and Next.JS preferred
  • Experience developing Python backend services (Flask or equivalent)
  • Proven ability to deliver clean, production‑ready code in fast‑paced environments
  • Strong independent problem‑solving skills with end‑to‑end ownership mentality
  • Interest in or experience with generative AI
  • Comfortable collaborating in an onsite, early‑stage startup environment
  • Prior startup and/or AI experience

Compensation & Benefits

  • Base salary: $140,000–$210,000k+, depending on experience
  • Equity in an early‑stage GenAI startup
  • Daily lunch provided
  • 401(k) and full benefits package
  • High ownership, strategic impact, and leadership visibility
  • Onsite role with a collaborative, fast‑growing engineering team

Robert Half will consider qualified applicants with criminal histories in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance.

Benefits

equity · daily lunch provided · 401(k) · full benefits package
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