Mainframe z​/OS Systems Programmer

CTG is seeking to fill a Mainframe z/OS Systems Programmer position for our client.

Phoenix, AZ metro area (Hybrid working model)

6 months with option to convert after 6 months

US Citizens, Green Card Holders, and other EAD holders (no visa dependent candidates)

Experienced Mainframe z/OS Systems Programmer responsible for supporting, maintaining, and optimizing IBM z/OS enterprise environments. This role focuses on system reliability, performance tuning, infrastructure upgrades, security compliance, and production support for mission‑critical workloads.

• Install, configure, maintain, and upgrade IBM z/OS operating systems and subsystems
• Perform performance tuning, capacity planning, and system optimization
• Manage SMP/E maintenance, fixes, patches, and upgrades
• Support and troubleshoot system outages, performance issues, and infrastructure problems
• Support core mainframe components including JES2/JES3, RACF, TSO/ISPF, USS, VTAM/TCP‑IP, and SDSF
• Administer batch processing, storage, file systems, and automation tools
• Support disaster recovery, high availability, backup, and recovery processes
• Develop automation using REXX, JCL, CLIST, or similar tools
• Ensure compliance with security, audit, and operational standards
• Participate in on‑call rotation and incident management

• IBM z/OS systems programming expertise
• Strong knowledge of JES2/JES3, RACF, VTAM, TCP/IP, USS, TSO/ISPF
• SMP/E maintenance and mainframe software lifecycle management
• Performance tuning and capacity planning
• REXX, JCL, CLIST scripting/automation
• Strong troubleshooting and incident resolution skills
• Experience supporting large enterprise mainframe environments

• 5+ years of experience as a Mainframe z/OS Systems Programmer or similar role
• Experience in large enterprise environments (banking, insurance, healthcare, government, retail, transportation preferred)
• Proven experience with production support, system upgrades, and performance optimization

• Bachelor’s degree in Computer Science, Information Technology, Engineering, or related field preferred, or equivalent experience

Excellent verbal and written English communication skills and the ability to interact professionally with a diverse group are required.

CTG will consider for employment all qualified applicants including those with criminal histories in a manner consistent with the requirements of all applicable local, state, and federal laws.

CTG is an Equal Opportunity Employer. CTG will assure equal opportunity and consideration to all applicants and employees without regard to race, creed, religion, color, national origin, sex, sexual orientation, gender identity, gender expression, age, disability, marital or veteran status, citizenship status, or any other discriminatory factors as required by law. CTG is fully committed to promoting employment opportunities for members of protected classes.