Mainframe Administrator

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

* Plan and execute z/OS upgrades, maintenance, PTFs and APARs

* Install, configure and support ISV products (Broadcom/CA, BMC, Rocket Software)

* Manage IBM Z hardware including CPC, LPAR configuration, HMC/SE, IOCP/IODF

* Monitor and tune performance using RMF, SMF, TMON, SAS, WLM

* Support GDPS, IPL testing and disaster recovery execution

* Provide incident resolution and participate in on-call support

Essential Skills

* Strong hands-on experience with z/OS installation, configuration and support

* Proven experience deliv...