It’s time you own your health. Function includes 160+ lab tests and personalized protocols for instant action. Tracked over time in one secure place. Backed by Battery, General Catalyst and a16z.
About the role
Function Health is the AI operating system for health, designed to empower people to live 100 healthy years. We are redefining how individuals understand, measure, and improve their health by moving beyond the limitations of traditional care and enabling comprehensive, continuous insight into human biology. Function has been recognized as one of Fast Company’s Most Innovative Companies of 2024 , and is venture-backed by Redpoint and other leading venture firms.
What they're looking for
- 1+ years building agentic AI systems, 6+ years as a full-stack or ML engineer , building production backends or ML systems in Python, Go, or similar
- Fluency with agentic orchestration ( e.g., LangGraph, PydanticAI, DSPy, LlamaIndex ) and tool/function calling
- Experience integrating frontier LLMs and multimodal models via managed APIs or self-hosted serving
- Strong with API design and backend frameworks (FastAPI, Flask) and event-driven architectures
- Data systems expertise with PostgreSQL, including token streaming and throughput tuning
- Retrieval and memory: vector databases (pgvector, Pinecone, Weaviate, Milvus), hybrid search, and graph/knowledge storage
More about this role
Function Health is the AI operating system for health, designed to empower people to live 100 healthy years. We are redefining how individuals understand, measure, and improve their health by moving beyond the limitations of traditional care and enabling comprehensive, continuous insight into human biology. Function has been recognized as one of Fast Company’s Most Innovative Companies of 2024 , and is venture-backed by Redpoint and other leading venture firms. Over half a million members have joined Function to take control of their health.
Through comprehensive lab testing, MRI and CT imaging, longitudinal data, and guidance from AI and clinical teams, Function gives members a complete and continuous view of their health — and the clarity to act on it. Through acquisitions across imaging, mobile phlebotomy, and supplement tracking and optimization, Function is building an integrated health platform that spans the full path from testing to health clarity to daily action.
Function recently announced a $298M Series B and is entering its next chapter of growth. As we scale, the quality and durability of our People systems, data, and insights will directly shape our ability to...
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