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Ztek Consulting · 11 hours ago

Mainframe z/OS Engineer

United States

Full-time

Remote

Mid, Senior Level

Ztek Consulting is seeking a Mainframe z/OS Engineer to manage and maintain z/OS operating systems. The role involves planning and executing system upgrades, monitoring system health, and providing expert-level support for mainframe incidents.

ConsultingHuman ResourcesInformation TechnologyLegalStaffing Agency

H1B Sponsor Likely

Hiring Manager

Sajith Nair

Responsibilities

Plan, prepare, and execute z/OS operating system upgrades

Apply IBM PTFs and APARs to maintain system integrity and resolve reported issues

Monitor z/OS system health, performance, and resource utilization using tools like RMF, SMF, TMON and SAS

Install, configure, upgrade, and maintain a wide range of ISV products (e.g., Broadcom/CA, BMC, IBM, Rocket Software, etc.)

Have good understanding and experience on Hardware Configuration Definitions / IOCP and HMC Management and WLM management

Collaborate with vendors for problem resolution, licensing, and technical support

Ensure compatibility and integration of ISV products with the z/OS environment

Manage and maintain critical system datasets (e.g., SYSRES, Page datasets, SMF datasets)

Provide expert-level support for mainframe incidents, including problem determination, diagnosis, and resolution in a timely manner

Analyze system performance data to identify bottlenecks and recommend improvements

Tune various z/OS components, WLM (Workload Manager), and ISV products to optimize resource utilization and application performance

Support DR planning, setup, IPL testing, replication technologies (e.g., GDPS), and DR event execution

Analyze system logs, sysout, dumps, and diagnostic data for complex issues

Participate in on-call rotation for 24/7 support of critical systems

Qualification

Z/OS installationZ/OS upgradesJCL proficiencySysplex conceptsISV product supportZ/OSMF knowledgeWLM configurationSystem performance analysisCollaboration with vendorsProblem determination

Required

In-depth knowledge and hands-on experience with z/OS operating system installation, configuration, and maintenance

Proven experience with major z/OS upgrades

Strong proficiency in JCL, TSO/ISPF, SMP/E, JES2/JES3 Administration

Sysplex concepts (Parallel Sysplex, Coupling Facility, XCF)

Extensive experience with the installation and support of various ISV products from vendors such as Broadcom/CA, BMC, IBM, and Rocket Software

Knowledge of z/OSMF and modernization initiatives

WLM configuration and tuning