Job Title: Mainframe ZOS System Programmer
Location: Phoenix, AZ
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.
* This role requires employees to live in or around the Phoenix, AZ area. You will be responsible to be onsite 3 days a week. We will consider candidates who are willing to relocate to the area.
Responsibilities:
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.
Performance & Capacity Management:
* Analyze system performance metrics and implement tuning improvements.
* Support capacity planning and resource optimization (CPU, memory, I/O).
* Evaluate hardware upgrades (e.g., CPU/MIPS growth, z-series enhancements).
Problem Management & Troubleshooting:
* Diagnose and resolve system-related issues, including system abends and failures.
* Perform root cause analysis for outages and major incidents.
* Work with IBM and vendors on problem determination and fixes.
Automation & Scheduling:
* Develop and maintain automation using tools such as:
* System REXX, CLIST
* SA z/OS, NetView
* Support job scheduling tools (e.g., CA7, Control-M where applicable).
Security & Compliance:
* Support system-level security configurations aligned with RACF policies.
* Ensure compliance with audit, regulatory, and enterprise security standards.
* Assist in vulnerability remediation and patching activities.
Change & Release Management:
* Execute changes through ITIL-based processes (ServiceNow or equivalent).
* Prepare implementation plans, backout procedures, and validation steps.
* Support weekend maintenance windows and IPL activities.
Documentation:
* Create and maintain technical documentation, including:
* System configurations
* Standard Operating Procedures (SOPs)
* Disaster Recovery plans
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Location: Phoenix, AZ
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.
* This role requires employees to live in or around the Phoenix, AZ area. You will be responsible to be onsite 3 days a week. We will consider candidates who are willing to relocate to the area.
Responsibilities:
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.
Performance & Capacity Management:
* Analyze system performance metrics and implement tuning improvements.
* Support capacity planning and resource optimization (CPU, memory, I/O).
* Evaluate hardware upgrades (e.g., CPU/MIPS growth, z-series enhancements).
Problem Management & Troubleshooting:
* Diagnose and resolve system-related issues, including system abends and failures.
* Perform root cause analysis for outages and major incidents.
* Work with IBM and vendors on problem determination and fixes.
Automation & Scheduling:
* Develop and maintain automation using tools such as:
* System REXX, CLIST
* SA z/OS, NetView
* Support job scheduling tools (e.g., CA7, Control-M where applicable).
Security & Compliance:
* Support system-level security configurations aligned with RACF policies.
* Ensure compliance with audit, regulatory, and enterprise security standards.
* Assist in vulnerability remediation and patching activities.
Change & Release Management:
* Execute changes through ITIL-based processes (ServiceNow or equivalent).
* Prepare implementation plans, backout procedures, and validation steps.
* Support weekend maintenance windows and IPL activities.
Documentation:
* Create and maintain technical documentation, including:
* System configurations
* Standard Operating Procedures (SOPs)
* Disaster Recovery plans
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Mainframe ZOS System Programmer in phoenix at Unknown Company
This position is listed as full time and onsite.