z/OS Specialist

Role z/OS Systems Hardware Specialist

Location Sheffield, UK (hybrid)

Start Date – ASAP

Duration – A minimum of 6 months

Contract inside IR35

Role Overview
We are looking for an experienced z/OS Systems Hardware Specialist to support and maintain Mainframe Processor operations within a multi-LPAR, multi-site Sysplex environment. The role involves hardware maintenance, system upgrades, troubleshooting, and performance optimization to ensure high availability and efficiency.

Key Responsibilities

• Mainframe Hardware Support & Maintenance:

• Oversee the UK Mainframe Processor estate in a multi-LPAR Sysplex environment.
• Troubleshoot and resolve day-to-day hardware incidents and system failures.

• Lead upgrades of IBM Mainframe Processors to the latest generations (z14, z15, z16).
• Upgrade Microcode levels on Mainframe Processors, Coupling Facilities, HMCs, and TKEs.

• Build and activate IODF/IOCDS configurations for storage and system updates.
• Update PR/SM definitions via HMC.

• Work closely with cross-functional teams to ensure system efficiency and reliability.
• Maintain compliance with risk management and regulatory processes.

• Provide after-hours support for critical hardware implementations and upgrades.

Required Skills & Experience

• Extensive experience in Mainframe hardware support and configuration.
• Strong knowledge of IBM z/OS systems and tools, including:

• HMC, HCD, TSO/ISPF, SDSF, JCL, CHPID Mapping Tool, JES2.

Preferred Skills (Not Mandatory But Advantageous)

• Automation, GDPS, Rexx, and CLIST Scripting.
• OSA-ICC definition and configuration.
• Basic understanding of DWDM technology.
• Familiarity with Disk/Tape infrastructure.