Experteer Overview
In this role you will oversee the administration and performance of IBM z/OS network infrastructure, ensuring secure, available connectivity for mission-critical services. You will lead efforts across migrations, upgrades, and disaster recovery while collaborating with cross‑functional teams and vendors. You will contribute technical leadership and mentor junior members, and participate in a 24x7 on‑call rotation to keep global mainframe operations resilient. This is a senior, specialized role at DXC’s Global Infrastructure Services.

Compensaciones / Ventajas
• Install, configure, upgrade, and maintain z/OS network software and services
• Manage and optimize TCP/IP and VTAM/SNA environments for performance and reliability
• Ensure network security, resilience, and operational stability across mainframe environments
• Troubleshoot complex connectivity and performance issues using z/OS diagnostics and monitoring tools
• Support migrations, infrastructure upgrades, and disaster recovery activities
• Collaborate with cross-functional technical teams and vendors on network initiatives
• Provide technical leadership and mentoring to junior team members
• Participate in a 24x7 on-call rotation to support business-critical services




• Implement and manage network security technologies including AT-TLS, TLS certificates, IPsec, and secure file transfer protocols
• Develop and maintain automation scripts using REXX, CLIST, or USS Shell to streamline operations

Responsabilidades
• 8+ years of experience in Mainframe Network Systems Programming or Administration
• Fluent English (written and spoken) is mandatory
• Strong expertise in IBM z/OS Communications Server, TCP/IP, VTAM/SNA, APPN/HPR, and Enterprise Extender
• Experience with network security technologies including AT-TLS, TLS certificates, IPsec, IP filtering, SSH, and secure file transfer protocols
• Knowledge of VIPA/DVIPA, Sysplex Distributor, Parallel Sysplex networking, and high-availability environments
• Hands-on experience with z/OS commands, TSO/ISPF, JCL, network diagnostics, monitoring, and performance tuning
• Experience with disaster recovery, incident management, change management, and production support
• Automation and scripting skills using REXX, CLIST, USS Shell, or similar tools

Requisitos principales
• health, dental, and vision insurance
• employee wellness
• life and disability insurance
• retirement savings plan
• paid holidays
• paid time off

📌 Mainframe Network Lead (Barcelona)
🏢 DXC Technology
📍 Barcelona