IBMz Network Engineer

Overview

In this role you will support a large-scale z/OS mainframe network, ensuring secure and reliable host communications. You join a multi-functional team delivering 24×7 coverage and work across UK and Europe on complex networking and security tasks. You will shape mainframe transmission infrastructure, troubleshoot issues, and implement security policies in a fast-paced environment. This opportunity offers exposure to enterprise-scale mainframe systems and cross-functional collaboration in a global organization.

Pay / Benefits

• comprehensive benefits package

Responsibilities

• Work in a multi-functional team supporting IBM mainframe networks and transmission products
• Provide 24×7 support rota coverage
• Manage TCPIP Port Reserves (additions, deletions, changes) and VTAM updates
• Administer OSA Adapters in a complex mainframe environment
• Perform VTAM PU/LU updates including Enterprise Extenders
• Implement AT-TLS rules and manage IPSEC policies (VPN, tunnels)
• Trace, debug and perform error analysis
• Coordinate with technical, applications and operations staff to ensure connectivity and security

Key requirements

• Experience with file transmission products such as Connect:Direct and FTP (as administrator or user)
• Knowledge of z/OS and z/OS utilities
• Understanding of z/OS networking services and related software/protocols
• Understanding of network security disciplines (IPSec, TLS/SSL, certificates)
• Experience with problem management and change management processes
• Ability to customize and manage secure SNA and TCP/IP networks under z/OS
• Knowledge of mainframe network management tools (NetMaster) and multi-session products (TUBES, Supersession)
• Experience with mainframe printing products
• General z/OS systems programming experience
• Knowledge of System z hardware including OSA-Express network cards
• Familiarity with Cisco network solutions
• Ability to work under tight deadlines; strong organizational and communication skills
• Willingness to stay current with new technologies
• Experience as a z/OS Systems Specialist

• Good communication
• Teamwork
• Negotiation
• z/OS networking
• VTAM
• TCP/IP

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