Design, develop, and maintain COBOL-DB2 programs on the IBM mainframe.
Write and optimize complex SQL and DB2 queries, stored procedures, and triggers.
Work with JCL, TSO/ISPF, and other mainframe tools to execute jobs and scripts.
Perform logical and physical data modeling, design DB2 table structures, indexes, and relationships.
Conduct performance tuning of SQL and database processes.
Analyze and resolve production issues related to DB2 applications.
Work closely with application developers, DBAs, and business analysts to meet project requirements.
Assist in data migrations, batch processing, and data archiving activities.
Participate in code reviews, impact analysis, and unit/system testing
