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Cheiron

AI-powered OS for drug programs

Full Stack Engineer, Applied AI

Full-Stack EngineeringUpdated on Nov 11
Full-timeSeoul, South KoreaNo salary listedIn-person

About the Job

Requirements

  • At least 2 years of experience shipping production software end to end.
  • Strong backend engineering fundamentals and experience designing APIs, databases, and services.
  • Experience working with LLMs, agents, retrieval-augmented generation (RAG), vector databases, or other AI-based systems in production.
  • Full-stack capability, including frontend technologies such as React and TypeScript.
  • Ability to set priorities independently and drive rapid delivery in an environment with incomplete specifications.
  • Active use of AI coding tools such as Claude Code and Cursor.

Responsibilities

  • Design and implement backend services using Python, FastAPI, and Postgres.
  • Build applied AI workflows using the OpenAI API, LangGraph, vector databases, and search systems.
  • Develop data ingestion, indexing, and search pipelines for life sciences data, including academic papers, clinical, regulatory, safety, and patent information.
  • Implement customer-facing features end to end, from data models and APIs through React/TypeScript frontend.
  • Build reliable systems for biotech and pharmaceutical workflows that connect AI-generated outputs to supporting evidence and enable source tracing and verification.
  • Collaborate directly with founders, domain experts, and early customers, taking ownership of outcomes rather than only processing tickets.

Desired Qualifications

  • Experience designing and operating LangGraph, agent frameworks, or RAG systems in production.
  • Experience with vector databases, semantic search, or knowledge graphs.
  • Experience developing enterprise SaaS products or products in pharmaceuticals, biotechnology, or healthcare.
  • Understanding of life sciences domain data, including academic literature, clinical trials, regulatory documents, and patents.
  • Experience at a seed-stage or early-stage startup.

About the Company

Cheiron

AI-powered OS for drug programs

Cheiron builds an AI-native operating system for drug programs, treating therapy work as a connected system rather than scattered documents. Its core is the Life Sciences Knowledge Graph, linking biomedical, clinical, regulatory, patent, and commercial data to enable inferences such as how trial design aligns with regulatory precedent or contradictions between competitor data and patents. The product organizes live data into a graph-based model that represents claims, evidence, assumptions, risks, decisions, and commitments to support clinical, regulatory, and strategic workflows. Cheiron differentiates itself with a live knowledge-graph backbone that unifies information across domains, aiming to speed and improve drug development by providing a continually updated, connected view to guide design and strategy.

Company size
11-50
Company stage
Seed
Total funding
$12M
Headquarters
Los Altos, CA
Founded
2024

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