Mainframe Host Network specialist

Job QualificationsJob Qualifications

Youre good at what you do and possess the required experience to prove it. However, equally as important – you have a growth mindset; keen to drive your own personal and professional development. You are customer-focused – someone who prioritizes customer success in their work. And finally, you’re open and borderless – naturally inclusive in how you work with others.

Required Technical and Professional Expertise

• 5 to 7 years of experience in Mainframe Host Network administration and support.
• Strong experience in z/OS Communications Server, including VTAM, TCP/IP, Enterprise Extender, and SNA administration.
• Expertise in DNS, IP routing, network security, packet analysis, connectivity diagnostics, and network performance tuning.
• Experience with problem determination, communications infrastructure support, and enterprise network troubleshooting.
• Knowledge of Microsoft Windows Server 2016/2019, VMware ESX, and public/private cloud environments, including on-premises to cloud migrations.
• Strong analytical, troubleshooting, and communication skills in production environments.

Preferred Technical and Professional Experience

• Experience with IBM z/OS Communications Server, VTAM configuration, Enterprise Extender (HPR/IP), and SNA networking.
• Knowledge of TLS/SSL, encryption, firewall management, and secure network communications.
• Experience with Wireshark, OSA/Sniffer, NetView, OMEGAMON, and enterprise monitoring tools.
• Familiarity with OSA-Express, HiperSockets, Parallel Sysplex, and IBM Z networking technologies.
• Experience in network performance monitoring, capacity planning, disaster recovery, and high-availability architectures.
• Understanding of ITIL Incident, Problem, and Change Management processes.
• Experience with automation, Infrastructure as Code (IaC), vulnerability management, Active Directory, and ADFS.
• Strong stakeholder management, documentation, and cross-functional collaboration skills.