Estimate testing efforts based on technical specifications. Design, document, and execute functional and acceptance tests for new features. Execute and maintain the manual regression test suite. Identify, log, and track software defects, usability issues, and stability problems. Validate bug fixes provided by the development team. Manage the automation backlog, collaborating with automation engineers to improve automated test coverage. Create synthetic data and manage client project data in OpenWorks/Oracle environments. Design and execute performance tests, evaluating software behavior under different hardware configurations. Measure and report product stability using test suite results and defect trends. Identify project risks and escalate as needed.