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# Full Stack Engineer (Los Altos)

- **Company:** Cheiron, Inc.
- **Location:** Los Altos, CA, United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Databases, Cursor (Graphical User Interface Elements), Graph Database, Python (Programming Language), PostgreSQL, Search Technologies, TypeScript, ReactJS, Large Language Models, Multi-Agent Systems, Indexer, Backend, Fastapi, Build Management, Build Tools, Front End Software Development, Api Design, Automation Anywhere
- **Published:** June 29, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=14d56567d502bb1d

## About the Role

Do you have experience in TypeScript?, * 2+ years of experience shipping production software end to end

 * Strong backend engineering fundamentals and experience designing APIs, databases, and services
 * Hands-on production experience with AI-driven systems such as LLMs, agents, RAG, and vector DBs
 * Full-stack range, comfortable working through the frontend with React and TypeScript
 * The drive to set your own priorities and ship quickly, even when specs are incomplete
 * Active use of AI coding tools such as Claude Code and Cursor, * Hands-on experience designing and operating LangGraph, agent frameworks, or RAG systems in production
 * Experience with vector DBs, semantic search, and knowledge graphs
 * Experience building enterprise SaaS, or pharma, biotech, or healthcare products
 * Familiarity with life sciences domain data such as academic literature, clinical trials, regulatory documents, and patents
 * Experience at a seed or early-stage startup

## Description

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


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