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Mainframe CICS System Administrator

TechVirtue LLC
Phoenix, AZ Contractor
POSTED ON 10/14/2026
AVAILABLE BEFORE 11/13/2026

We are seeking an experienced Mainframe CICS System Administrator to install, configure, maintain, and optimize IBM CICS Transaction Server environments. The ideal candidate will have strong hands-on experience in CICS systems administration, region management, software upgrades, performance monitoring, and troubleshooting in enterprise mainframe environments.

Key Responsibilities

CICS Administration & Maintenance

  • Install, configure, upgrade, and maintain IBM CICS Transaction Server (CICS TS) environments.

  • Apply IBM PTFs, maintenance packages, and software fixes.

  • Manage CICS version upgrades and perform regression testing and validation.

  • Configure and maintain CICS regions across production, test, development, and disaster recovery environments.

  • Maintain CICS startup parameters and System Initialization Tables (DFHSIT).

  • Monitor CICS region availability and ensure system stability and reliability.

  • Troubleshoot CICS system issues and coordinate with mainframe infrastructure and application teams.

Performance Monitoring & Tuning

  • Monitor CICS transaction performance, system health, and resource utilization.

  • Use monitoring tools such as OMEGAMON, BMC MainView, and TMON.

  • Analyze transaction response times, CPU utilization, storage usage, and system bottlenecks.

  • Perform performance tuning to improve transaction throughput and response times.

  • Investigate performance degradation and implement corrective actions.

System Support & Troubleshooting

  • Diagnose and resolve CICS region failures, transaction issues, and system-level errors.

  • Support production incidents, root-cause analysis, and problem resolution.

  • Maintain operational documentation, system procedures, and configuration standards.

  • Support disaster recovery activities and ensure operational readiness.

  • Collaborate with z/OS system programmers, DB2 administrators, and application development teams.

Required Skills

  • Strong hands-on experience with IBM CICS Transaction Server (CICS TS).

  • Experience installing, maintaining, upgrading, and supporting CICS environments.

  • Knowledge of CICS regions, DFHSIT parameters, and startup procedures.

  • Experience applying PTFs and performing maintenance upgrades.

  • Expertise in CICS performance monitoring and tuning.

  • Experience with OMEGAMON, MainView, or TMON.

  • Strong troubleshooting and production support skills.

  • Understanding of IBM z/OS mainframe environments.

 

Salary : $45 - $50

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