Senior Mainframe Engineer

Division: Group Technology Services As a Mainframe Hardware & Network Engineer, you will play a crucial role in ensuring the availability, connectivity, performance, and resilience of our z/OS infrastructure. Role Overview As a Mainframe Hardware & Network Engineer, you will play a key role in managing, maintaining, and evolving the hardware and network infrastructure supporting our z/OS environment. Your responsibilities will include: Managing and maintaining mainframe hardware and connectivity configurations, including CHPID, channel paths, and I/O definitions. Creating, maintaining, and deploying IODF configurations. Managing and troubleshooting TCP/IP configurations and network connectivity within the z/OS environment. Managing processor resources: CP, zIIP, IFL, memory and capacity. Planning and implementing hardware and network changes while ensuring high availability, resilience, and minimal production impact. Collaborating with Mainframe, Storage, Security, and other cross-functional IT teams. Mandatory Technical Requirements : Strong hands-on experience with IBM Z mainframe hardware and z/OS infrastructure. Proven expertise in IODF creation and maintenance, CHPID configuration, and I/O connectivity. Strong knowledge of z/OS Communications Server and TCP/IP configuration and troubleshooting. Good understanding of mainframe network architecture, including OSA adapters, network interfaces, routing, and connectivity. Strong troubleshooting skills for hardware, I/O, and network-related incidents in a highly available mainframe environment. Nice-to-Have Skills Experience with IBM Z hardware migration, installation, upgrade, or datacenter migration activities. Experience with the installation and customization of CFT, Connect Express, and Connect Direct would be highly appreciated. Knowledge of Parallel Sysplex, coupling connectivity, HMC, Support Element, and mainframe hardware management concepts. Knowledge of VTAM, SNA, Enterprise Extender, or related z/OS networking technologies. Knowledge of scripting and automation languages such as REXX. Soft Skills Strong collaboration and communication abilities. Analytical and methodical mindset for troubleshooting complex hardware and network issues. Clear written and verbal communication in English. Commitment to documentation and knowledge sharing. Availability Please note that flexibility to work outside standard business hours is required. Production launches and major hardware or network changes typically occur after 17:00 or on Saturdays, and participation in on-call rotations during nights and weekends is expected. Please note that this is a permanent position, and we do not offer freelance/contract arrangement for the role. #LI-AK1