Posted Aug 30, 2026

Senior Mainframe z/OS System Programmer / Mainframe Infrastructure Specialist

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Hiring: Senior z/OS System Programmer (Mainframe) L3/Lead Location: Remote (USA) Experience: 10+ Years We are seeking an experienced Senior z/OS System Programmer to support enterprise Mainframe Infrastructure environments. The ideal candidate will have strong expertise in z/OS System Programming, CICS, DB2, RACF, Sysplex/GDPS, Performance & Capacity Management, Automation, and ISV Product Support. Key Responsibilities: Installation, configuration, migration, and maintenance of z/OS environments Support hardware/software upgrades and regular maintenance (RSUs) Manage CICS, DB2, MQ, RACF, JES, USS, and ISV products Troubleshoot complex technical issues and perform root cause analysis Monitor system performance, capacity planning, and optimization Implement backup/recovery strategies and ensure SLA compliance Support automation and monitoring solutions across the enterprise Participate in 24x7 production support and change management activities Required Skills: z/OS, MVS, JES2/JES3, Parallel Sysplex, GDPS JCL, REXX, CLIST, Assembly Language RACF, IMS, IBM MQ/WebSphere MQ CICS Administration (CEMT, CEDA) DB2 Utilities, SMP/E, SQL, ZPARMS, BSDS, DDF Performance Tools: RMF, SMF, MXG, SAS, OMEGAMON, Strobe, CA-MICS Mainframe Hardware, LPAR, HMC CA-View, CA-1, CA-7, BMC Control-M/InControl Nice to Have: Mainframe Automation (NetView, OPS/MVS, SA z/OS, Tivoli, Control-O) Capacity Management & Performance Engineering SAS Programming and MXG Customization If you have a passion for Mainframe modernization, performance tuning, infrastructure reliability, and enterprise-scale z/OS environments, we'd love to hear from you!