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Senior Backend Software Engineer, AI Observability & Evals Platform (NYC)

LangChain

New York, NY · Senior

$180,000 – $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

LangSmith is seeking a backend engineer to build the observability and evaluation systems that power their AI agent platform, handling tracing, monitoring, and data processing at scale. This role suits someone comfortable with complex distributed systems who wants to shape how developers monitor production AI applications.

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

  • 5+ years backend engineering experience
  • Proficiency in Python or Go
  • API design expertise
  • High-throughput or mission-critical systems experience
  • Database systems experience (Postgres, Redis, Clickhouse)
  • Cloud platform experience (AWS, GCP, Azure)
  • Cross-functional collaboration skills

Nice to have

  • Fullstack or frontend engineering familiarity
  • Performance tuning expertise
  • Production debugging experience

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