LangChain - Developer Productivity
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Requirements
• 3+ years of experience as a software engineer or infrastructure engineer • Strong hands-on experience with Python and testing frameworks such as pytest • Python and testing frameworks such as pytest • Experience working with CI/CD systems (GitHub Actions preferred) and improving pipeline performance and reliability • CI/CD systems (GitHub Actions preferred) • Solid understanding of API testing, mocking/stubbing, and data setup/teardown • API testing, mocking/stubbing, and data setup/teardown • Comfort defining quality standards, writing test plans, and driving cross-team execution • Experience with load and performance testing tools such as k6 • load and performance testing tools such as k6 • Familiarity with observability tooling such as Datadog or OpenTelemetry • observability tooling such as Datadog or OpenTelemetry • Experience testing services running on Kubernetes and containerized environments • Kubernetes and containerized environments • Basic infrastructure experience with Helm, Terraform, Kubernetes networking, or secrets management • Helm, Terraform, Kubernetes networking, or secrets management • SQL fluency for validating data (Postgres, ClickHouse, BigQuery) • Familiarity with Go, Node, or React for targeted white-box tests and improving system testability • Go, Node, or React
Responsibilities
• 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 • Partner on incident workflows by reproducing issues, adding targeted regression tests, and improving runbooks and postmortems • Write documentation including test plans, playbooks, and contributor guidelines for writing high-quality tests • Example projects you might own • A pull-request ephemeral end-to-end testing harness that deploys a minimal LangSmith stack in CI and runs Playwright and API suites against seeded tenants • A k6 performance scenario that simulates multi-tenant traffic and surfaces p95/p99 latency regressions per release • A flake-budget system that automatically quarantines flaky tests, opens issues with artifacts, and tracks time-to-deflake
Benefits
• Annual salary range: $175,000- $240,000 USD • We offer competitive compensation that includes base salary, variable compensation for relevant roles, meaningful equity, benefits, and perks. Actual compensation and offerings will vary based on role, level, and location. Team members in the EU, UK, and APAC receive locally competitive benefits aligned with regional norms and regulations. • Benefits include medical, dental, and vision coverage, flexible vacation, a 401(k) plan, meals on in-office days in the US and more.
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