Requirements

• Hands-on development experience for at least 7 years into COBOL, CICS, and DB2 for both online and batch applications, including analysis, coding, unit testing, and Migration
• Strong working knowledge of CICS application programming, including COMMAREA, CICS screens
• Experience in developing CICS web services with SOAP/REST
• Troubleshooting skills for production/ test issues such as CICS abends,DB2 SQL errors, time outs, etc.
• Experience creating/exposing APIs using IBM z/OS Connect is a must have
• REST and JSON fundamentals: Understanding HTTP methods, status codes, headers, and JSON payload design is essential because z/OS Connect exposes and consumes RESTful APIs using JSON and OpenAPI definitions
• OpenAPI/Swagger: Ability to read and work with OpenAPI 2/3 documents, since z/OS Connect APIs are defined and deployed using these specifications and related artifacts
• Basic Java/Dev tooling: Familiarity with Java build tools (Gradle for requester APIs), containers, and IDEs or VS Code, which are commonly used with the z/OS Connect Designer and Gradle plug-ins
• High-level z/OS understanding: Concepts like regions, started tasks, RACF/SAF security, SMF/WLM, and how CICS/Db2/IMS fit into the landscape help you reason about performance, security, and deployment
• CICS/Db2/IMS basics: Knowing how a CICS transaction, Db2 stored procedure, or IMS program is structured lets you map them correctly to services behind your APIs
• COBOL and data structures: Ability to interpret COBOL copybooks or similar layouts is useful to map between mainframe data structures and JSON fields, even if you’re not writing the business logic

Nice to have:

• Experience with MQ or other middleware platforms including COBOL copybook –> JSON mapping and service enablement of existing business logic
• Familiar with API testing tools such as Postman/Ready API/SoapUI for request/response validation and payload troubleshooting

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