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Senior Frontend Engineer, AI Observabilty Platform

LangChain — Tracked from its ashby job board

Boston, MA Senior+ Posted Sep 24, 2026
TypeScriptJavaScriptReactREST/APIsFull-StackFrontendBackendAI/LLM
Apply on LangChain's site Tailor your résumé to this job

About the role

ABOUT US At LangChain, our mission is to make intelligent agents ubiquitous. We build the foundation for agent engineering in the real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We…

What the index says about this role

  • First seen by JobLarper — Sep 25, 2026, 22 days ago. Older postings collect hundreds of applicants — a tailored résumé matters more the longer a role has been live.
  • No pay range in our index for this listing. Across 23 indexed Frontend Engineer roles in US that do publish one, the middle half sits between $192k and $245k, median $203k — JobLarper's read of the market, not a figure from LangChain.
  • What Frontend Engineer roles ask for — across 142 indexed openings: Frontend (92%), React (71%), TypeScript (58%), REST/APIs (57%), JavaScript (54%). This posting names Frontend, React, TypeScript, REST/APIs, JavaScript, Backend, AI/LLM.
  • LangChain is hiring actively — 54 open roles indexed, 5 first appeared in the last 30 days.

Derived from the 28,470 roles JobLarper indexes daily from official company boards — not from the job description above.

⚡ JobLarper watched this role appear on LangChain's official board on Sep 24, 2026. Sign up free to get alerted minutes after roles like this go live, and tailor your real résumé to the exact description — nothing invented.

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