Mainframe z​/OS Technical Support

• Install, configure, maintain and upgrade IBM z/OS operating systems and related mainframe hardware and software.
• Diagnose and resolve complex system-level issues, including root-cause analysis.
• Manage SMP/E software maintenance, system libraries and system configurations.
• Monitor and tune system performance to support availability, capacity and efficient platform operation.
• Support system security controls, compliance obligations and audit requirements.
• Provide Level 2 and Level 3 support for z/OS-related incidents.
• Collaborate with application, infrastructure, operations, architecture and storage teams.
• Coordinate hardware maintenance and remediation activities with relevant technical teams and hardware vendors.
• Assess hardware levels, cabling, compatibility limits and configuration requirements for mainframe devices.
• Investigate connectivity and channel errors, including issues involving FICON connectivity, and help restore performance to required standards.
• Review hardware and system performance, identify bottlenecks, and work with storage teams to assess storage and tape configurations.
• Work with technical specialists to review implementations, identify improvements and implement recommendations.
• Provide technical guidance and mentor graduate trainees and other team members.

• Proven experience as a systems programmer supporting IBM z/OS environments.
• Strong knowledge of z/OS architecture, system utilities and subsystems.
• Experience troubleshooting complex system-level issues and performing root-cause analysis.
• Understanding of z/OS system and subsystem performance.
• Understanding of Workload Manager (WLM) setup and administration.
• Experience with z/OS installation, configuration, maintenance and upgrades.
• Knowledge of SMP/E software maintenance, system libraries and system configurations.
• Understanding of mainframe hardware and connectivity, including relevant experience with processors, disk storage, virtual tape libraries, network adapters, FICON directors and cabling.
• Ability to support security controls, compliance and audit requirements.
• Strong collaboration and communication skills, with the ability to work across technical teams and mentor colleagues.

• Work with architecture teams to align processes with architectural requirements and established best practices.
• Coordinate hardware maintenance and remediation with data-centre teams and hardware vendors.
• Explain end-to-end connectivity from design through implementation in complex environments.
• Provide clear technical feedback and supporting information when reviewing implementations and performance improvements.
• Continuously review hardware performance and collaborate with storage teams to improve storage and tape configurations.

Interested candidates should submit an up-to-date CV outlining their hands-on IBM z/OS systems programming experience, including SMP/E, WLM, performance management, troubleshooting and relevant mainframe hardware or connectivity exposure