Cheiron
Full Stack Engineer (Los Altos)
Los Altos · On-site · Full-time · Posted Jun 24, 2026
- Experience
- 2+ years shipping production software end to end.
About the job
Build Cheiron’s full-stack product and infrastructure, including backend services, applied AI workflows, search pipelines, and customer-facing features for drug development and pharmaceutical CMC teams.
What you'll do
- Build backend services, APIs, and data systems using Python, FastAPI, and Postgres.
- Develop AI workflows and ingestion, indexing, and search pipelines for life sciences data, with source-grounded, verifiable citations.
- Deliver customer-facing features end to end and work with founders, domain experts, and customers to own outcomes.
What they ask for
- 2+ years of experience shipping production software end to end.
- Strong backend engineering fundamentals and experience designing APIs, databases, and services.
- Production experience with AI-driven systems such as LLMs, agents, RAG, and vector DBs.
- Full-stack experience with React and TypeScript; active use of AI coding tools such as Claude Code and Cursor.
Nice to have
- Production experience with LangGraph, agent frameworks, or RAG systems; experience with vector DBs, semantic search, or knowledge graphs.
- Experience building enterprise SaaS or pharma, biotech, or healthcare products; familiarity with life sciences data or early-stage startups.
Tools
Python, FastAPI, Postgres, OpenAI API, LangGraph, React, TypeScript, Claude Code
AI focus
Build and operate production AI workflows, LLM systems, RAG and search pipelines, and systems that ground AI outputs in traceable, verifiable source citations.
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