Mainframe Programmer (ZOS – CICS Webservices)

Job Summary

Looking for a z/OS Connect Developer with strong CICS webservices experience to develop and support REST APIs that integrate modern applications with mainframe systems. The ideal candidate should have experience with IBM z/OS Connect, REST APIs, OpenAPI, CICS, COBOL, and mainframe environments.

Required Skills

• Hands-on experience with IBM z/OS Connect Enterprise Edition and API development.
• Strong understanding of REST APIs, HTTP methods, JSON payloads, and OpenAPI/Swagger specifications.
• Experience integrating APIs with CICS, COBOL, Db2, and IMS applications.
• Ability to understand COBOL copybooks and mainframe data structures for JSON mapping.
• Knowledge of z/OS concepts including RACF/SAF security, regions, SMF, and WLM.
• Experience with API testing and troubleshooting.

Responsibilities

• Design, develop, and deploy REST APIs using z/OS Connect.
• Configure API mappings between mainframe applications and JSON services.
• Support CICS-based API integrations and troubleshoot issues.
• Collaborate with development and architecture teams on mainframe modernization initiatives.