Mainframe Developer

Key Responsibilities
• Own CICS security conversion design from ACF2 rules to RACF profiles, groups, permits, and CICS class-specific controls.
• Define RACF controls for CICS regions, transactions, programs, files, terminals, commands, temporary storage, transient data, and intercommunication.
• Validate CICS started task IDs, region IDs, service IDs, application IDs, surrogate access, and batch integration authorities.
• Coordinate digital certificate, keyring, TLS, and secure CICS connectivity controls with the infrastructure and RACF engineering leads.
• Review CICS SIT, CSD, RDO, PLT, security exits, inter-region communication, and connection flows for migration impact.
• Lead CICS regression testing, connectivity testing, transaction authorization testing, resource access validation, and negative authorization testing.
• Troubleshoot CICS authorization failures using RACF messages, CICS traces, SMF records, region logs, and application diagnostics.
• Coordinate application owner sign-off for CICS workloads in each migration wave.
• Produce CICS security evidence and BAU support procedures for post-migration operations.

Experience and Qualifications
• 10+ years of CICS, transaction services, or mainframe middleware security experience.
• Strong knowledge of CICS TS security in RACF or ACF2 environments.
• Experience supporting critical production CICS transaction workloads in regulated environments.
• Experience with TLS, digital certificates, service IDs, CICS regression testing, and production cutover support Role & responsibilities

Preferred candidate profile