Mainframe Developer
Chicago, IL
Key Responsibilities:
• Analyze, modify, and migrate COBOL programs referencing IDMS to DB2
• Modify JCL, batch jobs, and online CICS transactions to remove IDMS dependencies
• Reference and conform to DB2 table formats provided by DBAs
• Collaborate with onshore/offshore team members in daily standups
• Work closely with technical leads to meet aggressive project deadlines
• Conduct data validation and comparison between IDMS and DB2 using extract utilities
• Package and promote code using tools like Endeavor Required Skills:
• 8-10 years of hands-on mainframe development experience
Strong proficiency in:
o COBOL, JCL
o DB2, IMS
o MQ, CICS (nice to have)
Experience with tools like Endeavor
• Proven experience working on modernization/migration efforts (e.g., IDMS to DB2, COBOL to Micro Focus)
• Ability to work independently and deliver production-ready code
• Familiarity with data validation strategies between legacy and modern systemsWork Style & Culture:
• Must be able to hit the ground running
• Self-starter who can manage individual workstreams with minimal supervision
• Collaborative team player open to feedback and code reviews
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