Seeking an experienced Mainframe Engineer / z/OS Systems Programmer with strong expertise in IBM Z hardware, z/OS administration, system upgrades, ISV products, performance tuning, automation, and disaster recovery. Experience supporting large enterprise or regulated environments is preferred.
Plan and execute z/OS upgrades, maintenance, and migrations .
Install, configure, upgrade, and troubleshoot ISV and system software .
Manage HMC, LPAR, I/O, HCD/IOCP, and WLM configurations .
Monitor and tune system performance and resource utilization.
Maintain critical datasets including SYSRES, page, and SMF datasets .
Diagnose and resolve complex z/OS, JES, workload, and ISV issues .
Support automation, monitoring, vendor escalations, and enterprise operations .
Participate in DR planning, GDPS activities, IPL testing, and recovery events .
Provide 24x7 production support as part of an on-call rotation.
Strong hands-on experience with z/OS installation, configuration, maintenance, upgrades, and migrations .
Experience with IBM PTFs, APARs, SMP/E, IPLs, and system maintenance .
Expertise with IBM Z hardware , including CPC, LPAR, HMC/SE, HCD/IOCP, IOCDS/IODF, FICON, OSA, and Coupling Facility.
Experience with WLM, JES2, RMF, SMF, TMON, and SAS .
Installation and support of Broadcom/CA, BMC, IBM, and Rocket Software products.
Knowledge of OPS/MVS, System Automation, Automation Point, and ZEKE Scheduler .
Experience with GDPS, disaster recovery, replication, and IPL/DR testing .
Strong troubleshooting skills using system logs, SYSOUT, dumps, and diagnostic data .
Experience supporting 24x7 production environments and on-call rotations.
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