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Software Engineer, Agent Systems (GTM Engineering)

LangChain· Engineering
Apply on company site
San Francisco, CA$165k - $220kFull-timePosted 1mo ago

About the role

LangChain is hiring a Software Engineer to own and operate the GTM Agent System, focusing on health, cost, performance, and business impact across production AI agent workflows used by go-to-market teams.

Responsibilities

  • Monitor production health across every graph, catching errors, slow runs, expensive runs, and silent failures before reps report them
  • Triage incoming issues from Slack, tickets, and rep reports, fixing small things directly and routing the rest to the right owner
  • Run the weekly eval suite, investigate failures, and turn real production bugs into permanent regression tests
  • Track cost and latency by model, graph, use case, and role, and recommend concrete changes to model choice, reasoning effort, and caching
  • Track usage and adoption per rep and per feature, and own the weekly health report the team runs on
  • Build the business metrics that show leadership what the agent is worth, from reply rates and meetings booked to hours reclaimed and ROI
  • Build our own monitoring and alerting on LangSmith, and write the “how we run our own agent” story for customers

Qualifications

  • Strong production Python and SQL, comfortable working in traces, logs, and warehouse tables
  • Real experience running LLM applications, including tracing, evals, and prompt and cache mechanics
  • SRE or production operations instincts: percentiles, SLOs, and separating noise from real pattern
  • Healthy skepticism about metrics; you check what a number actually counts before you publish it
  • Clear writing skills, and interest in publishing what you learn
  • High agency; you notice what's missing and take initiative to build it

Skills

Required:PythonSQLLLM applicationsSRE / production operationsWriting / communication

Benefits

  • medical, dental, and vision coverage
  • flexible vacation
  • a 401(k) plan
  • meals on in-office days in the US and more
Last updated Oct 14, 2026. Interested? Apply on the company site.

About LangChain

Engineer reliable agents

LangChain provides the engineering platform and open source frameworks developers use to build, test, and deploy reliable AI agents.

AI agentsagent engineeringbrex-fastest-growing-2025liquid-ai-recruiting-targetopen source frameworksplatform
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