Beginner-Friendly Topic
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QA Responsibilities in Each SDLC Phase
One of the most common mistakes junior QA engineers make is treating QA as a testing-only activity that happens after development. Professional QA engineers have defined responsibilities at EVERY phase of the SDLC. This topic maps concrete QA deliverables and activities to each development phase - giving you a playbook for QA participation across the entire software lifecycle.
Early Phase QA Activities (Requirements & Design)
- Requirements Phase QA: Review requirements for clarity, completeness, consistency, and testability. Identify ambiguous requirements ('the system shall respond quickly' - how quickly?). Flag missing edge cases and error scenarios. Create Requirements Traceability Matrix (RTM) skeleton. Output: Requirements Review Report, initial RTM
- Design Phase QA: Review UI designs for usability and accessibility. Review database schema for integrity constraints. Review API specifications for completeness. Identify testability risks in proposed architecture. Begin drafting Master Test Plan. Output: Design Review Comments, Test Plan draft
- The value: Every ambiguity identified in requirements or design costs 1 hour to fix. The same ambiguity found during testing costs days; in production, it costs weeks plus customer impact
Development & Testing Phase QA Activities
- Development Phase QA: Write detailed test cases from approved requirements. Prepare test data. Configure test environments. Review unit test coverage reports. Participate in code reviews for testability. Output: Test Cases, Test Data, Test Environment Setup Docs
- Testing Phase QA: Execute system tests, integration tests, regression tests. Log defects in Jira with complete reproduction steps. Verify defect fixes. Track test execution progress against plan. Produce daily test progress reports. Output: Test Execution Reports, Defect Reports, Test Summary Report
- Deployment & Maintenance QA: Smoke test production deployment. Monitor post-release defect reports. Maintain and update regression test suites for maintenance releases. Conduct post-release defect analysis and retrospective. Output: Release Smoke Test Results, Post-Release Report
Tip
Tip
Practice QA Responsibilities in Each SDLC Phase in small, isolated examples before integrating into larger projects. Breaking concepts into small experiments builds genuine understanding faster than reading alone.
Shift-left = test earlier. 10x cheaper to fix bugs in requirements vs production.
Practice Task
Note
Practice Task - (1) Write a working example of QA Responsibilities in Each SDLC Phase from scratch without looking at notes. (2) Modify it to handle an edge case (empty input, null value, or error state). (3) Share your solution in the Priygop community for feedback.
Quick Quiz
Common Mistake
Warning
A common mistake with QA Responsibilities in Each SDLC Phase is skipping edge case testing - empty inputs, null values, and unexpected data types. Always validate boundary conditions to write robust, production-ready qa engineering code.
Key Takeaways
- One of the most common mistakes junior QA engineers make is treating QA as a testing-only activity that happens after development.
- Requirements Phase QA: Review requirements for clarity, completeness, consistency, and testability. Identify ambiguous requirements ('the system shall respond quickly' - how quickly?). Flag missing edge cases and error scenarios. Create Requirements Traceability Matrix (RTM) skeleton. Output: Requirements Review Report, initial RTM
- Design Phase QA: Review UI designs for usability and accessibility. Review database schema for integrity constraints. Review API specifications for completeness. Identify testability risks in proposed architecture. Begin drafting Master Test Plan. Output: Design Review Comments, Test Plan draft
- The value: Every ambiguity identified in requirements or design costs 1 hour to fix. The same ambiguity found during testing costs days; in production, it costs weeks plus customer impact