# Agent Reliability Engineer, GTM

**Company:** [LangChain](https://hotfix.jobs/companies/langchain)
**Location:** San Francisco, CA
**Role:** GTM Engineering
**Salary:** $150k – $190k/yr
**Skills:** Python, SQL, SRE, Llm Applications, Tracing, Evaluations, Prompt Engineering, Caching, SLOs, LangGraph, Langsmith, BigQuery, dbt, FastAPI, Postgres
**Posted:** 2026-09-06

> Own the reliability, evaluation, observability, cost, and business impact of LangChain’s production GTM agent. The role requires strong Python and SQL, experience operating LLM applications, and production-operations instincts.

## Job Description

## Responsibilities
- Monitor production health across agent graphs, identifying errors, slow or expensive runs, and silent failures.
- Triage issues from Slack, tickets, and representative reports; resolve smaller issues and route others to the appropriate owner.
- Run weekly evaluation suites, investigate failures, and convert production bugs into regression tests.
- Track cost and latency by model, graph, use case, and role; recommend improvements to model selection, reasoning effort, and caching.
- Track usage and adoption by representative and feature, and own weekly health reporting.
- Build business metrics covering reply rates, meetings booked, hours reclaimed, and ROI.
- Build monitoring and alerting on LangSmith and document how the company operates its own agent for customer-facing reference material.

## Requirements
- Strong production Python and SQL skills, with comfort working in traces, logs, and warehouse tables.
- Experience operating LLM applications, including tracing, evaluations, prompts, and caching.
- SRE or production-operations instincts, including percentiles, SLOs, and distinguishing meaningful patterns from noise.
- Healthy skepticism about metrics and careful validation of what metrics measure.
- Clear writing skills and interest in publishing technical learnings.
- High agency and initiative.

## Nice to Have
- LangGraph or LangSmith experience.
- Experience building an evaluation suite from scratch.
- BigQuery or dbt experience.
- Developer-relations-adjacent writing.
- Empathy for sales and go-to-market users.

## Compensation
- Base salary: $150,000–$190,000.
- Compensation may also include variable compensation, equity, benefits, and perks.
- Benefits include medical, dental, and vision coverage, flexible vacation, a 401(k) plan, and meals on in-office days in the United States.

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