Senior Mainframe Network Architect z/OS Specialist

DXC Technology Morocco; Asturias; Presencial; EUR 65.000 - 95.000; Jornada completa

Descripción de la vacante

DXC Technology in Spain is seeking a Senior Mainframe Network System Programmer to oversee the administration, security, availability, and performance of IBM z/OS network infrastructure. You will install, configure, and optimize z/OS network services, lead migrations, and participate in a 24x7 rotation for global operations.

The role requires deep expertise in TCP/IP, VTAM/SNA, and enterprise-grade security, with strong leadership and collaboration across teams.

Formación

• 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 security technologies including AT‑TLS, TLS certificates, IPsec, and file transfer protocols.
• Knowledge of VIPA/DVIPA and high-availability environments.
• Hands-on experience with z/OS commands, TSO/ISPF, JCL, and performance tuning.

Responsabilidades

• 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.

Conocimientos

Mainframe networking

z/OS Communications Server

TCP/IP

VTAM/SNA

APPN/HPR

JCL

Scripting (REXX / USS Shell / CLIST)

Disaster recovery

24x7 on-call support

Herramientas

REXX

CLIST

USS Shell

Descripción del empleo

DXC Technology in Spain is seeking a Senior Mainframe Network System Programmer to oversee the administration, security, availability, and performance of IBM z/OS network infrastructure. You will install, configure, and optimize z/OS network services, lead migrations, and participate in a 24x7 rotation for global operations.

The role requires deep expertise in TCP/IP, VTAM/SNA, and enterprise-grade security, with strong leadership and collaboration across teams.