Mainframe Z/oS

Worldwide Salaried Open

Role : Mainframe Z/oS Location: Remote FTE ONLY

Job Description

Must Have Technical/Functional Skills

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

Roles & 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.

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