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Mainframe Z/oS

Realign

Location:
United States

Category:
IT - Administration

Contract Type:
Not provided

Salary:

140000.00 USD / Year

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Job Responsibility:

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

Requirements:

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

Additional Information:

Job Posted:
March 21, 2026

Employment Type:

Fulltime

Work Type:

Remote work

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