Define risk-based test plans and acceptance criteria Build and maintain automated tests (Cypress/TypeScript preferred) across E2E, integration, and API layers Implement and own CI/CD test gates Perform targeted manual/exploratory testing for new features Create and manage test data, mocks/fixtures, and environment configurations Coordinate with engineers to reproduce, triage, and debug issues Own post-deploy smoke testing and release sign-off Continuously improve the QA/SDET toolchain and practices