Applied AI Engineer

Catalyst Labs
Cambridge, CA
Job Description
Catalyst Labs is seeking an Applied AI Engineer to join their team in San Francisco. The successful candidate will help architect the foundation of next-generation Mind Architecture, a system that powers digital minds to learn, reason, and express individuality. The role requires expertise in AI/ML engineering, LLMs, graph systems, and scalable AI infrastructure. The company offers above-market base + equity + benefits, with relocation assistance to San Francisco available.

Requirements

  • 4-6+ years of experience in AI or ML engineering, with at least 12 years hands-on with LLMs in production.
  • Proven track record of building and deploying ML-powered systems that directly impact end-user experience.
  • Strong Python expertise, including asynchronous programming, event loop optimization, and performance tuning.
  • Experience with retrieval-augmented generation (RAG), context engineering, and LLM eval frameworks.
  • Deep practical understanding of how LLMs reason, how to structure inputs, and how to measure improvement.

Benefits

  • Unlimited Learning Stipend: books, courses, or conferences of your choice.
  • Comprehensive Health, Dental, and Vision coverage.
  • 401(k) via Human Interest.
  • Relocation assistance to San Francisco (if applicable).
  • A creative, high-agency culture that celebrates curiosity and deep thinking.
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