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Jack and Jill Logo

Full Stack Engineer

Jack and Jill

Salary not specified
Sep 9, 2025
San Francisco, CA, US
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VC-backed healthtech startup is looking for mission-driven builders to work on frontier AI that powers personalized treatment plans, aiming to make life-saving technology smarter and safer.

Requirements

  • Full-stack fluency, with comfort in both backend and frontend engineering
  • hands-on experience with LLM training, RLHF or agent design

Responsibilities

  • Build and ship across backend (Python, PyTorch) and frontend (React/TypeScript)
  • Orchestrate workflows that tie together retrieval, evaluation and safety systems
  • Train, fine-tune and align large language models for healthcare use cases
  • Prototype new features fast, validate with metrics, and ship to production

Other

  • in-person
  • Low ego, high agency, hungry to move fast in a high-impact environment
  • Mission-driven and eager to apply tech to one of the toughest real-world problems
  • relocation/visa support