Senior Backend Engineer, LangSmith DeploymentsActive$240K–$175K

The opportunity

The Deployment team builds the platform that runs AI agents in production. We design and scale the core durable execution runtime to power reliable long-running agents with resumable streaming and inter-agent protocol support.

What you'll do

  • Design distributed queue and worker systems that handle concurrent agent: execution, background tasks, and multi-agent coordination across horizontally scalable infrastructure

  • Own core data infrastructure: state persistence, atomic job claiming, connection management, and schema evolution

  • Collaborate on architectural decisions, ensuring solutions are scalable and robust.

  • Ship resumable streaming infrastructure so clients can disconnect and: reconnect mid-execution without losing state

  • Instrument and monitor production systems: tracing, metrics, and alerting to keep the platform healthy

  • Participate in on-call rotations and own incident response for the runtime

What they're looking for

  • Create and maintain technical documentation, including system design and operational runbooks.
  • Contribute to and extend open-source LangGraph, which is used by thousands of: developers to build agent applications