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Niche mainframe skill reduces applicant pool but metro location and known employer raise competition.
Highly specialized IBM Z and mainframe I/O skills limit transferability across industries and roles.
Role requires platform-specific IBM Z certifications, hardware migration experience, and specific tooling, so filters are strict.
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Design, configure, and maintain mainframe I/O subsystems including channels, control units, DASD, tape, and FICON infrastructure.
Support processor upgrades, CPC activations, hardware migrations, and data center relocation/site swap activities.
Develop and maintain IOCDS definitions and validate production IPL readiness.
Experience with IBM HCD (Hardware Configuration Definition), IOCP (Input/Output Configuration Program), IOCDS generation, FICON architecture, DASD and tape configuration.
Work Experience Required: Not explicitly mentioned in the JD.
Knowledge of CPC hardware design, IPL planning, channel path management, hardware migration planning, and GDPS/disaster recovery concepts.
Experience in Microsoft Windows Server 2016/2019 administration, VMware ESX, and public/private cloud migration from on-prem.
Strong hands-on experience with IBM Z mainframe hardware and I/O configuration, including certifications or equivalent experience.
Familiarity with enterprise storage integration such as FICON Directors and DASD technologies like DS8000, as well as CPC upgrades, PR/SM, LPARs, and multi-site Parallel Sysplex environments.
Experience supporting large-scale data center transformations, automation (especially IaaS/infrastructure as code), vulnerability management, and working within ITIL change and infrastructure governance frameworks.