Developer Productivity

Job summary

Responsibilities

We’re hiring a Software Engineer to join the Infrastructure team and own developer productivity across our LangGraph Cloud/Platform and LangSmith products. You’ll work closely with Infrastructure, Backend, and Frontend teams to ship with confidence across Kubernetes-based services, APIs, and UI…

• Own test strategy end-to-end across APIs, services, UI, data, and infrastructure (Kubernetes, Terraform, Helm)
• Stand up ephemeral test environments in Kubernetes for pull requests and release candidates; seed test data and run hermetic test suites
• Shift quality earlier in CI/CD pipelines (GitHub Actions) through parallelization, caching, deterministic seeds, flake tracking, and quality gates
• Build observability into testing workflows with rich failure artifacts such as logs, traces, and dashboards
• Establish performance and reliability baselines for critical paths, including SLIs, SLOs, and regression detection

What they're looking for

• 3+ years of experience as a software engineer or infrastructure engineer
• Strong hands-on experience with Python and testing frameworks such as pytest
• Experience working with CI/CD systems (GitHub Actions preferred) and improving pipeline performance and reliability
• Solid understanding of API testing, mocking/stubbing, and data setup/teardown
• Comfort defining quality standards, writing test plans, and driving cross-team execution

Tech stack

• LangGraph
• Kubernetes
• Terraform
• Python
• SQL
• PostgreSQL
• BigQuery
• Go