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JavaScript Engineer (Open Source Team)

LangChain

San Francisco, CA · full time

$160,000 – $240,000

Listed on LangChain’s own careers site. You apply with them directly — we never stand between you and the employer.

What this role is

LangChain is seeking a JavaScript engineer to maintain and improve their open-source LangChain and LangGraph packages while engaging with the developer community. This role suits experienced software engineers passionate about developer tooling and open-source projects who want to shape how AI agent frameworks are used in production systems.

Our summary, not LangChain’s wording. The full posting is on their site.

Skills this role names

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What they ask for

Required

  • 3+ years of software engineering or applied machine learning experience
  • Background in software engineering
  • Strong written and oral communication skills
  • Ability to work in fast-moving, unstructured environments
  • Ownership-minded approach to work

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