> Markdown version of [/jobs/ext/4031259-senior-z-os-platform-engineer](https://www.wearedevelopers.com/jobs/ext/4031259-senior-z-os-platform-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior z/OS Platform Engineer - **Company:** McMaster-Carr Supply Company - **Location:** Chicago, IL, United States - **Experience:** Expert - **Salary:** $191,900 - $240,000 - **Contract:** Permanent contract - **Skills:** Customer Information Control System (CICS), IBM DB2, Job Control Language (JCL), Z/OS - **Published:** October 30, 2026 - **Apply:** https://www.careerbuilder.com/job-details/senior-z-os-platform-engineer-chicago-il--352f7f53-61cf-4021-ba14-b86c7a1cdddf ## About the Role IBM z-OS Operating System, Prototyping, Assembly Line, eCommerce, Resolve Customer Issues, Customer Experience, Automation, Customer Relations, IBM z-OS Operating System, Distribution Services, Who You AreWe're looking for curious, driven engineers who thrive in collaborative environments and love solving hard problems. Ideal candidates will have: * At least 3 years of experience with technologies such as z/OS, CICS, Db2, JCL, SMP/E, SMS/ACS, Networking, z/OSMF, and Zowe. * A thoughtful, analytical approach to problem-solving and technical design. * Clear, confident communication skills across technical and non-technical audiences. * Interest in mentoring, coaching, and growing as a leader. ## Description * 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 support company goals and strategies. * Build technical knowledge through learning groups, book clubs, and one-on-one mentoring.