Mainframe Z/oS
AceStack LLC
Role : Mainframe Z/oS
Location: Remote
FTE ONLY Job Description
Must Have Technical/Functional Skills
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
- 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.
Vacancy posted 3 days ago
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