Z/OS Systems Administrator

Job Summary

 The Z/OS Systems Administrator is responsible for the installation, configuration, maintenance, and performance of IBM z/OS mainframe systems.

This role ensures high availability, security, and reliability of mission-critical enterprise applications running on the IBM Z platform.

 Key Responsibilities

• Install, configure, upgrade, and maintain IBM z/OS operating systems
• Manage system IPLs, patches, and SMP/E maintenance
• Monitor and tune system performance, capacity, and availability
• Administer JES2/JES3, system libraries, and datasets
• Manage storage (DASD, SMS, DFSMS) and tape environments
• Perform problem determination and root-cause analysis
• Support batch and online workloads (CICS, DB2, IMS)
• Collaborate with application developers and operations teams
• Ensure system security, compliance, and audit readiness
• Participate in on-call support and disaster recovery activities

 Core Mainframe Skills

• IBM z/OS system administration
• TSO/ISPF, SDSF
• SMP/E
• JCL fundamentals