Gade Suresh

System Engineer

Talent

ChennaiMember since 16 March 2026

COBOLJCLEasytrieveDB2IMS DBCICSBMSIBM z/OSISPFSDSFIBM Workload Scheduler (TWS)CA-7IDCAMSSORTIEBGENERFile-AidSPUFIPlatinumEndevorExpediterApplication enhancementsUnit testingBatch validationDefect fixingProduction supportIncident management (P1/P2)Root cause analysisServiceNowRelease & change managementProcess automationCross-team collaborationMainframe modernization

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COBOLJCLEasytrieveDB2IMS DB

About

Mainframe Engineer with 4 years of experience supporting and enhancing enterprise IBM z/OS applications in the banking domain. Strong hands-on expertise in COBOL, JCL, DB2, IMS, and CICS, with experience across production support, batch processing, application enhancements, testing, and automation. Proven ability to resolve incidents, perform root cause analysis, fix defects, and support stable application delivery across the full mainframe application lifecycle.

Experience

Mainframe Engineer | Client: Lloyds Banking Group at Tata Consultancy Services (TCS) (2022-03 – Present)

Supported and enhanced Corporate Finance and Annuities applications running on IBM Mainframe (z/OS) in a regulated banking environment.

Supported and enhanced Corporate Finance and Annuities applications running on IBM Mainframe (z/OS)
Worked across production support, development, and testing activities in a regulated banking environment
Monitored and managed end-to-end batch cycles, including job execution, restarts, dependency checks, and issue resolution
Analyzed and resolved P1/P2 production incidents, ensuring minimal impact to business operations
Performed root cause analysis and implemented permanent fixes for recurring batch and application issues
Developed and modified COBOL programs and JCL to support defect fixes and business logic changes
Performed unit testing, batch validation, and data verification for application changes
Built automation using JCL and Easytrieve to reduce manual operational effort
Supported production deployments using Endevor and performed post-release validation
Worked with DB2 and IMS databases for data analysis, validation, and issue resolution
Collaborated with developers, testers, DBAs, and business users across support and release cycles
Created and maintained support documentation and runbooks for applications and batch processes