Mainframe z/OS Administrator – Contract – Office Based
We are seeking a Senior Mainframe z/OS Administrator / Systems Programmer to join a large enterprise environment supporting critical IBM Z infrastructure. This is a hands-on role focused on z/OS system administration, upgrades, performance tuning and disaster recovery within a 24/7 production estate.
Key Responsibilities
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Plan and execute z/OS upgrades, maintenance, PTFs and APARs
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Install, configure and support ISV products (Broadcom/CA, BMC, Rocket Software)
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Manage IBM Z hardware including CPC, LPAR configuration, HMC/SE, IOCP/IODF
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Monitor and tune performance using RMF, SMF, TMON, SAS, WLM
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Support GDPS, IPL testing and disaster recovery execution
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Provide incident resolution and participate in on-call support
Essential Skills
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Strong hands-on experience with z/OS installation, configuration and support
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Proven experience delivering major z/OS upgrades
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Deep knowledge of LPAR, HMC, IOCP, IODF, FICON, OSA, Coupling Facility
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Experience supporting ISV tools (Broadcom, BMC, Rocket)
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Performance tuning and capacity management expertise
Desirable
This role is ideal for a Senior z/OS Systems Programmer / Mainframe Infrastructure Engineer who thrives in complex, mission-critical environments and owns delivery from upgrade planning through to DR execution.
Apply now to discuss full details and day rate
