QA Lead / Test ManagerLed Quality Assurance activities for enterprise Mainframe applications supporting critical business operations, managing test strategy, planning, execution, defect management, and release coordination across multiple environments. Directed end-to-end testing of IBM z/OS Mainframe applications involving COBOL, JCL, CICS, DB2, VSAM, and batch processing, ensuring accurate business processing, data integrity, and system reliability. Oversaw JCL batch execution, COBOL output validation, SQL/DB2 backend verification, flat-file reconciliation, interface testing, and Serena ChangeMan release management while collaborating with cross-functional teams.
Mentored QA engineers, coordinated UAT and production validation activities, and ensured successful delivery of high-quality Mainframe solutions following SDLC, STLC, and Agile best practices.