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 general 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.

About the Role

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. You won’t own just one slice; you’ll work deeply across the product and systems and solve whatever problems need solving.

We build products that run in real customer environments – not research demos or prototypes. We’re looking for a hands‑on builder who can quickly structure ambiguous problems and turn them into highly polished products. You don’t need to be an AI researcher or a life sciences domain expert,



but we care deeply about strong engineering fundamentals and real experience designing, building, and operating LLM systems.

What You’ll Do
- Design and build backend services on Python, FastAPI, and Postgres
- Build applied AI workflows using the OpenAI API, LangGraph, vector DBs, and search systems
- 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
- Work directly with founders, domain experts, and early customers, owning outcomes rather than just closing tickets

Requirements
- 2+ years of experience shipping production software end to end
- Strong backend engineerin

📌 Full Stack Engineer (Los Altos)
🏢 Cheiron
📍 Los Altos