CICS System Administrator

jA leading enterprise organization is seeking a Mainframe CICS System Administrator to join its infrastructure operations team in the Phoenix, Arizona area. This is a full-time, hybrid opportunity requiring three days per week onsite. The environment includes enterprise-scale mainframe systems, CICS Transaction Server, performance monitoring platforms, and mission-critical transactional workloads supporting major business operations.

This role offers the opportunity to work within a highly stable and technically sophisticated mainframe environment where reliability and performance are essential. The organization is seeking an individual who enjoys troubleshooting complex systems, optimizing performance, and maintaining critical infrastructure. The successful candidate will play a key role in modernization efforts while working alongside experienced infrastructure and operations professionals.

• 5+ years supporting IBM mainframe environments
• Experience administering CICS Transaction Server (CICS TS)
• Experience applying PTFs and supporting system upgrades
• Knowledge of production, test, and disaster recovery environments
• Experience monitoring performance and resource utilization
• Strong troubleshooting and problem-solving abilities
• Understanding of transaction processing environments
• Experience maintaining system configuration parameters

• OMEGAMON experience
• Main View experience
• TMON experience
• Performance tuning expertise
• Capacity planning experience
• Disaster recovery support experience
• Large enterprise environment experience
• Mainframe modernization exposure

• Install, maintain, and upgrade CICS TS environments
• Support version upgrades and patch implementation
• Administer production, test, and disaster recovery regions
• Monitor transaction performance and system health
• Analyze CPU, storage, and transaction response metrics
• Perform tuning activities to improve application performance
• Troubleshoot infrastructure-related issues
• Collaborate with operations and engineering teams

• 60% CICS Administration & Maintenance
• 25% Performance Monitoring & Optimization
• 15% Infrastructure Support & Collaboration

• 75% Hands‑on technical administration
• 10% Documentation & planning
• 15% Team collaboration and project participation

• Competitive base salary
• Potential annual bonus eligibility
• Enterprise-scale environment
• Long‑term career growth opportunities
• Exposure to modernization initiatives

• Medical
• Dental
• Vision
• Vacation Time
• Retirement Savings Plan
• Additional employer-sponsored benefits

Location: Phoenix, Arizona (Hybrid, 3 Days Onsite Weekly)

Applicants must be currently authorized to work in the U.S. on a full-time basis now and in the future.