Ratheesh Suresh Kumar
Senior Mainframe Developer | Expert in COBOL, JCL, DB2, CICS, and IMS DB | Proven Track Record in System Migrations and Legacy Modernisation , Skilled in AI, Machine Learning, and Cloud Technologies.
- Role
- Senior Mainframe Developer at UBS
- Location
- Edison, NJ, US
- LinkedIn followers
- 500 followers
About Ratheesh Suresh Kumar
With a Master’s degree in Software Engineering from BITS Pilani and a Bachelor’s degree…
Experience
Senior Mainframe Developer
Feb 2025 — Present · US
Design, code, test, and debug COBOL programs with embedded CICS and DB2/VSAM access.Develop and maintain CICS transactions for real-time processing.Work on mainframe modernization initiatives, bridging COBOL programs with Java frontends or microservices.Work closely with business analysts, Java developers, and solution architects to align requirements and interfaces.Document technical specifications, workflows, and API mappings.Participate in Agile/Scrum ceremonies when applicable.Conduct unit testing, integration testing, and support UAT.Use tools like File-AID, Apptune, Changeman, and IBM Debug Tool.Ensure performance tuning and error handling mechanisms are in place.Troubleshoot live CICS transactions and interface failures between Java and Mainframe.Perform abend analysis and implement fixes within SLAs.Monitor and optimize job performance using SMF logs and job history.
Education
Mepco Schlenk Engineering College
Bachelor of Engineering - BE, Electrical, Electronics and Communications Engineering
BITS Pilani Work Integrated Learning Programmes
Master of Science - MS, Computer Software Engineering
Caltech
Postgraduate Degree, Artificial Intelligence
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