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🥝 Senior Mainframe Application Developer

Han IT Staffing | Wilmington, Delaware, United States | Posted May 07, 2026

Job Description





We are seeking an experienced Mainframe Developer with strong hands-on expertise in IBM z/OS technologies. The ideal candidate will be responsible for developing, maintaining, and supporting mainframe applications, as well as troubleshooting production issues efficiently.



Key Responsibilities:

  • Develop, enhance, and maintain applications on IBM z/OS platform

  • Work with COBOL, CICS, DB2, and VSAM for application development

  • Handle batch processing using JCL and scheduling tools like CA7

  • Integrate and support messaging using IBM MQ

  • Perform code deployment and version control using Change man.

  • Utilize IBM Mainframe Utilities for system operations and support

  • Analyze and resolve production issues with strong problem-solving skills

  • Collaborate with cross-functional teams for system improvements and support.




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