Overview In this role you will support a large-scale z/OS mainframe network, focusing on secure host communication subsystems. You'll join a multi-functional team providing 24x7 coverage and work on configuring, maintaining, and securing mainframe network services. You will interact with technical, applications, and operations teams to ensure connectivity and security, with opportunities to handle complex problems and stay current with evolving technologies.

This position offers a meaningful chance to contribute to enterprise-scale mainframe operations within a globally diverse organization.

Responsabilidades Support IBM mainframe networks and transmissions infrastructure

Participate in 24x7 support rota

Perform TCPIP Port Reserves (Add/Delete/Change)

Perform VTAM updates (Add/Delete/Change)

Manage OSA Adapters in a complex mainframe environment

Perform VTAM PU/LU updates including Enterprise Extenders

Implement AT-TLS rules and manage digital certificates

Configure and manage IPSEC policies (permit/deny, VPN/IPsec tunnels)

Trace, debug and perform error analysis

Coordinate with technical, applications and operations staff to ensure network connectivity and security, including after hours and weekends as needed





Requisitos principales Experience administering file transmission products such as Connect: Direct and FTP (or equivalent user experience)

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 in problem management from diagnosis to resolution

Understanding of Change Management processes

Ability to customize and manage secure SNA and TCP/IP networks under z/OS

Knowledge of mainframe network management tools (e.g., NetMaster) and multi-session tools (TUBES, Supersession)

Experience with mainframe printing products

General z/OS systems programming experience

Knowledge of System z hardware including OSA-Express NICs

Excellent problem-solving and analytical skills

Strong communication, teamwork and negotiation skills

Familiarity with Cisco Network Solutions

Ability to work to tight deadlines; strong organizational skills

Willingness to keep up with new technology

Understanding of Data Protection Act

Experience as a z/OS Systems Specialist in IT communication teamwork negotiation z/OS z/OS utilities

TCP/IP networking

📌 IBMz Network Engineer (Barcelona)
🏢 Ntt Data
📍 Barcelona