Experteer Overview In this role you will maintain and secure a large-scale z/OS mainframe network platform. You will join a multi-functional team focused on IBM mainframe networking, ensuring reliable connectivity and data/IP security for host subsystems and product suites. You'll handle critical configuration, issue resolution, and 24x7 support to keep transmission services running. This is an opportunity to work at scale with established mainframe tooling while contributing to responsible innovation. You will collaborate across technical, application, and operations teams to drive stable, secure mainframe environments. Compensaciones / Ventajas
Configure and maintain the integrity and data/IP security of the Mainframe host communication subsystems and associated products
Support IBM mainframe networks and transmission products and infrastructure as part of a multi-functional team
Participate in 24x7 on-call support rota
Perform TCPIP Port Reserves (Additions, Deletions, Changes)
Perform VTAM updates (Additions, Deletions, Changes) and PU/LU updates including Enterprise Extenders




Manage OSA Adapters in a complex mainframe environment
Implement AT-TLS rules (digital certificate management)
Configure and manage IPSEC policies (permit/deny rules, VPN/IPsec tunnels)
Trace, debug and perform error analysis
Communicate with technical, applications and operational staff to ensure network connectivity and security (including after hours)
Responsabilidades
Experience administering file transmission products such as Connect:Direct and FTP (or as a user)
Knowledge of z/OS and z/OS utilities
Understanding of z/OS networking services, structure and related software and protocols
Understanding of network security disciplines (IPSec, TLS/SSL, certificates) and their relation to file transmissionExperience with problem management from diagnosis to resolution
Understanding of Change Management processes
Ability to customize/manage secure SNA and TCP/IP networks under z/OS
Knowled

📌 Network Security Developer (Cataluña)
🏢 Ntt
📍 Cataluña