Senior Mainframe Network Engineer (z/OS)

DXC Technology Morocco; Oña; On-site; EUR 85,000 - 120,000; Full time

Job summary

DXC Technology Morocco is seeking a Senior Mainframe Network System Programmer to secure and optimize connectivity for IBM z/OS environments. The role emphasizes administering network software, enhancing TCP/IP and VTAM/SNA performance, and ensuring security and resilience for mission‑critical services.

The candidate will mentor junior staff, participate in migrations and disaster recovery, and collaborate with global teams.

Qualifications

• 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, 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 using REXX, CLIST, USS Shell, or similar tools.

Responsibilities

• 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 infrastructure 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

Skills

Fluent English

z/OS Networking

TCP/IP

VTAM/SNA

Security technologies

Tools

JCL

TSO/ISPF

USS Shell

REXX scripting

Job description

DXC Technology Morocco is seeking a Senior Mainframe Network System Programmer to secure and optimize connectivity for IBM z/OS environments. The role emphasizes administering network software, enhancing TCP/IP and VTAM/SNA performance, and ensuring security and resilience for mission‑critical services.

The candidate will mentor junior staff, participate in migrations and disaster recovery, and collaborate with global teams.