Latest Backend Engineering jobs at LangChain

Senior backend engineer responsible for rebuilding usage-based and token-based billing infrastructure, including pricing, metering, reconciliation, and invoicing systems. Requires 5+ years of Python or Go backend experience and familiarity with distributed systems and billing platforms.

Designs, optimizes, and scales a distributed database storage layer for AI observability using Rust. Engineers performant ingestion/query code, integrates with cloud storage, deploys on Kubernetes, and profiles for cost/speed. Requires 5+ years systems/database experience, Rust proficiency.

Senior Backend Engineer builds and optimizes services for LangSmith's observability and evaluation platform, handling high-volume AI app monitoring. Requires 5+ years experience, Python/Go proficiency, database expertise, and performance optimization skills.

Maintains and improves the core Python LangChain and LangGraph packages, enhances documentation, resolves community issues, and builds example AI applications. Requires 5+ years in software engineering or applied ML, strong communication, and ownership mindset.