Abhishek Pandey

- Functional, integration, and system testing on IBM z/OS batch and online applications - Test environment setup using JCL, COBOL, and DB2 test data - Middleware integration testing with SOAP/XML, MQ, and GSB - Analysis of batch jobs, JCL streams, and job dependencies - RCA for defects in batch processing, JCL, and DB2 - Release readiness support and collaboration with onshore/offshore teams - Test documentation and defect tracking to support audit and release sign-off

- Developed and enhanced COBOL programs and JCL flows while resolving production issues on IBM z/OS - Performed DB2 data fixes, SQL updates, and validation for batch and online applications - Built and optimized batch job chains using JCL, DB2, and IWS/OPC - Analyzed MQ messages to support and improve middleware interfaces - Implemented DB2 data migration modules for legacy-to-cloud integration - Applied ITIL-based incident, problem and change management to deliver stable fixes