z/OS Systems Hardware Specialist

z/OS Systems Hardware Specialist | Mainframe Support & Upgrades

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.
• Processor & Microcode Upgrades:
  • Lead upgrades of IBM Mainframe Processors to the latest generations (z14, z15, z16).
  • Upgrade Microcode levels on Mainframe Processors, Coupling Facilities, HMCs, and TKEs.
• System Configuration & Optimization:
  • Build and activate IODF/IOCDS configurations for storage and system updates.
  • Update PR/SM definitions via HMC.
• Collaboration & Risk Management:
  • Work closely with cross-functional teams to ensure system efficiency and reliability.
  • Maintain compliance with risk management and regulatory processes.
• Out-of-Hours Support:
  • 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.
• Hands-on experience with IBMz processor generations (z14, z15, z16).
• Sysplex and Coupling Facility expertise.
• Excellent troubleshooting and problem-solving skills.
• Effective communication skills, with the ability to explain complex technical concepts to a broad audience.

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.

Work Environment & Flexibility

• Location: Sheffield or Wakefield.
• Hybrid Work Model: Work-from-home flexibility with on-site presence when required.

Why Join?

• Work on critical IBM Mainframe upgrades in a high-performance IT environment.
• Lead next-generation mainframe technology implementations.
• Collaborate in a structured, technology-driven organization.

If you are a Mainframe Hardware Specialist with strong z/OS expertise, wed love to hear from you!