JavaScript Engineer (Open Source Team)

LangChain
San Francisco
Workplace: OnsiteFull timeUSD 150,000 - 225,000 annuallyFunction: Administration & Executive AssistanceExperience: 3+ yearsSkills: ["Communication","Problem-solving","Writing","Oral communication"]

Core maintainer for the LangChain JavaScript package, focused on maintaining and improving core abstractions and runtime for langchain/langgraph, with responsibilities spanning documentation, user support, and building example applications. Requires a software engineering background with strong communication, ownership, and ability to thrive in a fast-moving, unstructured environment. In-person in San Francisco preferred.

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FursaFursa
LangChain
LangChain
1 year ago

JavaScript Engineer (Open Source Team)

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 23 hours agoStatus: Live

Job Summary

Core maintainer for the LangChain JavaScript package, focused on maintaining and improving core abstractions and runtime for langchain/langgraph, with responsibilities spanning documentation, user support, and building example applications. Requires a software engineering background with strong communication, ownership, and ability to thrive in a fast-moving, unstructured environment. In-person in San Francisco preferred.
Location: San Francisco
Workplace: Onsite
Employment Type: Full time
Job Function: Administration & Executive Assistance

Key Responsibilities

  • •Maintain and improve the core abstractions and runtime of the langchain and langgraph packages.
  • •Improve and update documentation to support the JS package and its users.
  • •Answer user questions and help resolve issues in a timely manner.
  • •Use langchain to build example applications to showcase capabilities and best practices.
  • •Collaborate with the team to guide direction and ensure high-quality, maintainable code.

Pay and Benefits

Salary: USD 150,000 - 225,000 annually
Equity and Bonus:Equity
Perks:Health InsuranceDental401kLife InsuranceEquityPaid Leave

Key Requirements

  • •3+ years of software engineering or applied machine learning background; solid Software Engineering foundation.
Experience:3+ yearsOpen sourceAI
Skills:CommunicationProblem-solvingWritingOral communication
Languages:English
Tech Stack:JavaScriptOpen SourceLangChainLangGraphLangSmithLLM

Company Brief

LangChain
Provides an open-source framework and commercial platform (LangSmith/LangGraph) for building, testing, monitoring, and deploying LLM-powered applications and agentic AI for developers and enterprises.
Industry: Developer Tools
Company Size: Medium (51 to 250 employees)
Revenue: USD 10M to 25M
Growth: Scaleup
Valuation: Unicorn (USD 1B+)
Funding: Series B
Headquarters: San Francisco, United States
Founded: 2022
WebsiteLinkedIn