View role → : AI Engineer, San Francisco

Proteus Bio; San Francisco, Northern (CA, KY); On-site; USD 180,000 - 230,000; Full time

Job summary

Proteus in San Francisco is hiring an AI Engineer to advance a Biological Intelligence Platform for autonomous discovery of personalised medicine. You will scale AI systems from idea to production, develop agentic workflows, and own critical components end-to-end.

We value hands-on experience with biological foundation models, evaluating models with robust benchmarks, and strongPython/FastAPI/containers skills. Biology background is welcome but not required.

Qualifications

• Experience taking AI systems from idea to production.
• Experience building agentic systems end to end.
• Ability to design benchmarks and evals to measure effectiveness.
• Experience with biological foundation models.
• Demonstrates autonomy and ownership in work.

Skills

Scaled AI systems

Agentic systems design

Benchmarks & evals

Biological foundation models

Autonomy

Tools

Python

FastAPI

Async jobs

Containers

Job description

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.