What are the responsibilities and job description for the Mainframe z/OS System Programmer position at Keen Technology Solutions LLC?
Mainframe z/OS System Programmer
Phoenix, AZ
Onsite-Hybrid
The Mainframe z/OS System Programmer is responsible for the installation, customization, maintenance, and optimization of IBM z/OS operating systems and associated system software. This role ensures the stability, performance, security, and availability of mission-critical mainframe environments, supporting large-scale enterprise applications.
System Administration & Maintenance
- Install, configure, and maintain IBM z/OS operating systems.
- Perform system upgrades, migrations (e.g., z/OS version upgrades), and apply maintenance (PTFs, APARs, RSUs).
- Manage IPL processes, system initialization, and configuration (PARMLIB, PROCLIB, SYS1 datasets).
- Monitor system health and performance using tools such as RMF, SMF, SDSF.
Subsystem Support
- Install, configure, and support key subsystems:
- JES2/JES3
- TSO/E, ISPF
- USS (Unix System Services)
- RACF (in coordination with security teams)
- Work closely with DB2, CICS, IMS, MQ, and Storage teams for integration and support