Senior z/OS Platform Engineer is open at McMaster-Carr in Chicago, IL (Elmhurst). The posting gives a salary of $192K - $240K. Posted on Nov 7, 2025, and still on McMaster-Carr’s careers page when we last checked, on Nov 14, 2026.
About the role
As a Senior z/OS Platform Engineer you will: Perform a broad range of mainframe infrastructure tasks, including supporting CICS and Db2 subsystems, applying system maintenance, and replacing physical hardware. Write code to enhance the availability, resiliency, and efficiency of mainframe software and systems that bring value to customers. Leverage application, resource, and system data to drive down costs and…
The opening lines of the posting. The rest is on McMaster-Carr’s careers page.
Hiring at McMaster-Carr
McMaster-Carr has 29 open roles right now. Most are in Operations, Engineering and Manufacturing & Trades. The median advertised salary across its roles with a published range is $106K. See all its roles
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