We are seeking an experienced Mainframe Systems Engineer / zOS Specialist to join a customer environment based in Brooklyn, Pretoria. The successful candidate will be responsible for the day-to-day operation, implementation, configuration, and maintenance of the Mainframe infrastructure, including z hardware and z/OS software environments. The role requires strong technical expertise across Mainframe systems administration, third‑party product support, storage management, disaster recovery, and business continuity activities. This position works closely with multiple engineering teams to support the integrated Mainframe ecosystem and ensure stability, performance, and operational excellence across the environment. Requirements Mainframe Operations & Administration Manage the day-to-day operation and support of the Mainframe environment Implement, configure, maintain, and support z hardware and z/OS software Perform system monitoring, troubleshooting, tuning, and performance management Support Mainframe operational stability, availability, and resilience Installation, Upgrades & Lifecycle Management Perform z/OS software installations, upgrades, patching, and maintenance Install, configure, and maintain third‑party z/OS program products Manage software lifecycle activities and environment optimisation Support Research & Development initiatives relating to Mainframe technologies Storage, Network & Systems Management Administer storage management environments including DFSMS and DFSMShsm Support Mainframe network management and TCP/IP configuration Manage system resources, storage allocation, backup, and recovery activities Support HCD configuration and Mainframe hardware definitions Disaster Recovery & Business Continuity Participate in Disaster Recovery planning, testing, and execution activities Support Business Continuity initiatives and operational readiness processes Ensure Mainframe environments align with operational recovery standards and procedures Collaboration & Engineering Support Work closely with multiple engineering and infrastructure teams Support integrated enterprise solutions delivered through the Mainframe platform Participate in technical problem‑solving, change implementation, and operational planning Required Skills & Experience Essential Technical Skills Strong experience supporting z/OS Operating Systems and related subsystems Experience with: HCD TCP/IP SMP/E RMF CICS MQ Experience installing and configuring third‑party z/OS products Strong understanding of Storage Management environments Experience with DFSMS and DFSMShsm Experience with BMC Control Products Additional Requirements Strong troubleshooting and problem‑solving skills Ability to work within highly technical enterprise environments Experience supporting operational stability, upgrades, and DR activities Strong collaboration and communication skills Preferred Experience Experience within enterprise or financial services environments Exposure to large‑scale Mainframe infrastructure environments Experience participating in business continuity and disaster recovery exercises #J-18808-Ljbffr