Founding AI Engineer ($130k-$200k + Equity) at Stealth YC company

About this role

A founding AI engineer role at a stealth healthtech startup building LLM-powered systems for clinical diagnosis and treatment decisions. You'll develop production-grade AI that directly impacts patient outcomes, working with an experienced founding team in San Francisco.

What you'll do

• Optimize LLM integration and prompt engineering for clinical accuracy and safety-critical diagnosis
• Architect AI infrastructure including RAG systems, semantic search, and memory systems for patient conversations
• Implement medical safety guardrails and evaluation frameworks to prevent hallucinations in high-risk scenarios
• Ship production AI systems that power real medical decisions including prescriptions and lab orders
• Collaborate with physicians to ensure clinical validity and safety of AI systems

What they're looking for

• Python (expert-level)
• LLM application development and production deployment
• Prompt engineering
• RAG (Retrieval-Augmented Generation) architectures
• Vector databases
• Token economics
• AI safety and evaluation frameworks
• Modern AI tools (Cursor, Claude)

Benefits

• Significant equity ownership
• Career growth potential to lead engineering domains or management
• Work with experienced founders who scaled previous company to $100M+ revenue
• High-impact work directly affecting patient health outcomes
• San Francisco location