# Senior Backend Software Engineer, AI Observability & Evals Platform (LangSmith) at LangChain

- Company: LangChain
- What the company does: LangChain enables every company to own their intelligence. Control, govern, and compound intelligence with an open agent engineering platform. Backed by Sequoia, IVP and Lux.
- Company website: https://www.langchain.com/
- Type: Startups (AI role)
- Level: Senior
- Location: Boston, MA
- Work setup: On-site
- Pay: $180K to $240K base salary per year (USD)
- Posted: 2026-09-12
- Apply by: 2026-10-27
- Apply: https://jobs.ashbyhq.com/langchain/b23ea9af-c6dc-40fa-86ce-75042b905173
- Page: https://www.1752.vc/careers/jobs/langchain-senior-backend-software-engineer-ai-observability-and-evals-platform-l/

## About the role

We are looking for a Senior Backend Engineer to join our growing engineering team in Boston. In this role you will be building the backend systems that power LangSmith, LangChain’s observability and evals platform. You will work on the core services that allow our customer's developer teams to monitor and evaluate their AI applications at scale.

Tags: Engineering