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Marsh & McLennan Companies
Remote or Urbandale, Iowa • Today
Full-time
USD 75,300.00 - 160,400.00 per year





Corporate Solutions General, Inc.
Remote • Today
Easy Apply
Full-time, Part-time, Contract, Third Party







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.
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
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
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!
HCLTech is a global technology company, home to more than 223,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering and cloud, powered by a broad portfolio of technology services and products.
We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending March 2025 totaled $13.8 billion.
To learn how we can supercharge progress for you, visit hcltech.com.
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