test-engineer

Test strategy design balances scope across three layers: unit tests validate individual functions, integration tests verify component interactions, and E2E tests confirm user workflows. Define functional and non-functional requirements for each layer, targeting 80%+ unit coverage with meaningful integration and E2E coverage to catch regressions early.

Test automation in CI/CD runs unit, integration, and E2E tests on every commit through pipeline stages. Automate framework execution, coverage reporting, and failure notifications so tests block broken deployments. This catches defects before production and reduces manual testing overhead.

Yes. Test-driven development and behavior-driven development work across frontend and backend: write tests before code, structure them around user behavior, and use the same test design principles. Both approaches improve code quality and maintainability regardless of stack.

Framework selection depends on your tech stack, team expertise, and test scope. Evaluate tools that support unit, integration, and E2E testing, integrate with your CI/CD system, and match your language and platform. Prioritize frameworks with strong coverage reporting and automation capabilities.

Unit test coverage should target 80%+ of codebase logic to catch regressions in core functionality. Integration tests should cover critical workflows and component interactions. E2E tests should validate key user paths. Coverage alone doesn't guarantee quality; focus on meaningful test cases that reflect real usage.

Test design clarifies scope, prevents gaps, and reduces redundant or low-value tests. Planning functional and non-functional requirements upfront ensures tests cover critical paths, edge cases, and failure modes—avoiding wasted effort on unmaintainable tests written without strategy.