Developed, reviewed, and executed detailed test plans and test cases for manual testing across various projects, ensuring comprehensive test coverage for functional, integration, and user acceptance testing (UAT).Conducted thorough regression testing to verify that software updates and bug fixes did not impact existing functionality.Collaborated with developers and product teams through the Software Development Life Cycle (SDLC), ensuring that QA processes were seamlessly integrated from the requirements phase through to final release.Performed requirements analysis to understand business and technical requirements, allowing for precise test case design and validation.Conducted functional testing to verify that software modules met specified requirements and worked effectively within the system.Performed system integration testing to validate the interoperability of various modules and systems.Utilized Postman for API testing, verifying data integrity and system performance through thorough endpoint validation.Tracked, documented, and managed defects using JIRA, working closely with developers to communicate issues and validate fixes.Coordinated with cross-functional teams to prioritize and resolve issues, ensuring high-quality deliverables.Participated in Scrum ceremonies including daily stand-ups, sprint planning, and retrospectives, providing input on testing requirements and prioritizing tasks for upcoming sprints.Actively collaborated with developers, business analysts, and project managers to clarify requirements and testing objectives, facilitating smooth communication and understanding among teams.Created comprehensive testing documentation, including test scripts, results, and defect reports, providing clear and actionable insights for project teams and stakeholders.