z/OS Systems Engineer

Largeton Group is seeking a z/OS Systems Engineer to support and maintain their enterprise mainframe infrastructure. The role involves installation, maintenance, and migration of z/OS products, as well as managing software deployment and troubleshooting technical issues.

Responsibilities:

• Support and maintain enterprise mainframe infrastructure, primarily on z/OS systems
• Perform installation, maintenance, and migration of z/OS products and related software in multi-LPAR environments
• Manage software deployment using SMP/E and non-SMP/E methods, including PTF/APAR management and CSI/zone maintenance
• Administer system datasets such as LINKLIST (LNKLST), APF-authorized libraries, and Parmlib members (IEASYSxx, IEAPARMxx)
• Execute z/OS release migrations and upgrades using CBPDO, ServerPac, SMP/E, and z/OSMF tools
• Conduct pre- and post-migration validation, manage coexistence PTFs, and create rollback/fallback plans
• Utilize z/OSMF for software deployment, instance management, workflow automation, and system health checks
• Implement system changes following enterprise change management processes and perform impact analysis for system modifications
• Conduct regression testing in multi-LPAR Sysplex environments after system-level changes
• Troubleshoot and resolve technical issues, providing support for large-scale mainframe environments
• Create and maintain documentation, ensuring clear communication with stakeholders

Requirements:

• Support and maintain enterprise mainframe infrastructure, primarily on z/OS systems
• Perform installation, maintenance, and migration of z/OS products and related software in multi-LPAR environments
• Manage software deployment using SMP/E and non-SMP/E methods, including PTF/APAR management and CSI/zone maintenance
• Administer system datasets such as LINKLIST (LNKLST), APF-authorized libraries, and Parmlib members (IEASYSxx, IEAPARMxx)
• Execute z/OS release migrations and upgrades using CBPDO, ServerPac, SMP/E, and z/OSMF tools
• Conduct pre- and post-migration validation, manage coexistence PTFs, and create rollback/fallback plans
• Utilize z/OSMF for software deployment, instance management, workflow automation, and system health checks
• Implement system changes following enterprise change management processes and perform impact analysis for system modifications
• Conduct regression testing in multi-LPAR Sysplex environments after system-level changes
• Troubleshoot and resolve technical issues, providing support for large-scale mainframe environments
• Create and maintain documentation, ensuring clear communication with stakeholders