The Role
This role is responsible for implementing, maintaining and optimizing z/OS Operating environment and involves managing system configuration, upgrades, applying maintenance (PTFs/RSUs), monitoring system performance and ensuring high availability. The engineer oversees hardware components such as CPCs, LPARs, DASD, tape systems, HMC/SE, and IOCP/IODF configurations.
Your 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.
Your Profile
Essential skills/knowledge/experience:
• In-depth knowledge and hands-on experience with z/OS operating system installation, configuration, and maintenance.
• Proven experience with major z/OS upgrades
• Extensive experience with the installation and support of various ISV products from vendors such as Broadcom/CA, BMC, IBM, and Rocket Software
• Hands‑on experience with IBM Z mainframe hardware including CPCs, LPAR configuration, HMC/SE operation, IOCDS/IODF management, FICON channels, OSA, Coupling Facility structures, and hardware upgrades or migration
Desirable skills/knowledge/experience:
• Understanding of automation tools such as OPS/MVS, System Automation, Automation Point, and integration of alerts/monitoring across enterprise operations
• Familiarity with ZEKE Scheduler to support operations teams and diagnose JES/workload issues.
• Exposure to large enterprises or regulated environments.
Mainframe Z/Os Administrator in Bracknell employer: Tcs Uk
As a Provisioning Engineer at our company, you will thrive in a dynamic work culture that prioritises innovation and collaboration. We offer competitive benefits, including professional development opportunities and a supportive environment that encourages growth in the rapidly evolving telecom sector. Located in a vibrant area, our team enjoys a balance of work and life, making it an excellent place for those seeking meaningful and rewarding employment.
