View role → : AI Engineer, San Francisco

We are hiring an AI Engineer to join Proteus in San Francisco.

We are building a Biological Intelligence Platform for the autonomous discovery of personalised medicine. Our platform reasons over disease targets, designs therapeutic and diagnostic candidates, and continuously learns from experimental results.

Location: San Francisco. Employment type: Full time.

Workplace: On-site.

Start: September 2026. Department: Research.

We are looking for someone who

• Has scaled AI systems and can take them from idea to production
• Has built agentic systems end to end — planning, tool use, and orchestration
• Has built the benchmarks and evals to know whether any of it actually works
• Has worked with biological foundation models
• Operates with a high degree of autonomy
• Wants to leave the world better than they found it

Preferred Experience

• LLM agents and tool calling
• LangGraph/stateful workflow orchestration
• RAG, memory and context engineering
• Structured outputs and typed tool schemas
• Agent evaluations, tracing and observability
• Secure sandboxed code execution
• Python, FastAPI, async jobs, containers

Biology experience is valuable, but not required. We care more about what you have built, how you think, and whether you take ownership than where you went to school.

We are backed by Founders, Inc. and work in person from their Fort Mason campus.