S

sdet

Production-grade Playwright + TypeScript test automation framework: POM, CodeceptJS-inspired actor layer, UI/API (REST/GraphQL/WebSocket)/a11y/event-messaging testing, Allure reporting, sharded GitLab CI

LangChain.js e2e testing best practices in TypeScript: deterministic FakeChatModel tests, structured-output validation, and an eval harness

ETL/data pipeline testing fundamentals in TypeScript: row-count, schema, transformation, duplicate and reconciliation testing with the Playwright test runner