Company Overview
Cheiron is a Stanford-founded AI company building an AI-native operating system for the pharma, biotech, and broader life sciences industry.
Since launching in 2024, we’ve rapidly grown our integral user base. In Korea, we reached 22% of industry users within six months and are now used across 200+ pharma and biotech companies as we continue to scale quickly.
We’re looking for a Full Stack Engineer, Applied AI to help build Cheiron’s core product and infrastructure.
This role spans the full stack – backend systems, AI workflows, RAG and search pipelines, APIs, and the customer-facing product itself. We’re looking for a hands‑on builder who can quickly structure ambiguous problems and turn them into highly polished products. Design and build backend services on Python, FastAPI, and Postgres
Develop ingestion, indexing, and search pipelines for life sciences data, including academic papers, clinical, regulatory, safety, and patent sources
Build customer-facing features end to end,



from the data model to the API to the React/TypeScript frontend
Build systems that ground AI-generated outputs in source data with traceable, verifiable citations so they can be trusted in real pharma and biotech work
2+ years of experience shipping production software end to end
~ Strong backend engineering fundamentals and experience designing APIs, databases, and services
~ Full-stack range, comfortable working through the frontend with React and TypeScript
~ Active use of AI coding tools such as Claude Code and Cursor

Familiarity with life sciences domain data such as academic literature, clinical trials, regulatory documents, and patents
Experience at a seed or early-stage startup
401(K) retirement plan
~ Health insurances (Medical/Dental/Vision)
~ Transportation support for early starts and late nights
~ In‑office snack bar and additional commuting and work travel support

📌 Full Stack Developer for pharmaceutical sector (Los Altos)
🏢 Cheiron
📍 Los Altos