Mar 2023 – Oct 2025 · 2 yrs 7 mos · Hyderabad, Telangana, India · Remote

• - Developed and maintained COBOL programs for financial applications, ensuring accurate processing of large-scale batch jobs and online transactions. - Created and optimized JCL scripts to automate batch processing workflows, reducing job execution time by 25%. - Designed and implemented DB2 database queries and stored procedures to support business applications, improving data retrieval efficiency. - Configured and managed CICS transactions for real-time processing, ensuring seamless customer interactions in banking systems. - Utilized VSAM files for efficient data storage and retrieval, implementing data integrity checks and recovery processes. - Performed troubleshooting and debugging of mainframe applications using TSO/ISPF, resolving production issues promptly. - Demonstrated strong understanding of z/OS system architecture, including job scheduling, dataset management, and system utilities. - Collaborated with cross-functional teams to analyze requirements, design solutions, and implement changes in a Waterfall and Agile environment. - Documented mainframe processes, including program specifications and job flows, to support knowledge sharing and compliance. - Ensured adherence to mainframe security standards, including RACF configuration and access control management.