Mainframe Host Network Professional

Job Summary

As a System Administrator at Kyndryl, you ll solve complex problems and identify potential future issues across the spectrum of platforms and services. You ll be at the forefront of new technology and modernization, working with some of our biggest clients - which means some of the biggest in the world.

There s never a typical day as a System Administrator at Kyndryl, because no two projects are alike. You ll be managing systems data for clients and providing day-to-day solutions and security compliance. You ll oversee a queue of assignments and work directly with technicians, prioritizing tickets to deliver the best solutions to our clients.

Responsibilities

• Support host network connectivity.
• Administer TCP/IP and SNA infrastructure.
• Support external customer and partner connectivity.
• Troubleshoot network performance issues.
• Maintain availability of mission-critical network services.
• Support modernization and protocol migration initiatives.

Your future at Kyndryl

Every position at Kyndryl offers a way forward to grow your career, from Junior System Administrator to Architect. We have opportunities for Cloud Hyperscalers that you t find anywhere else, including hands-on experience, learning opportunities, and the chance to certify in all four major platforms. One of the benefits of Kyndryl is that we work with clients in a variety of industries, from banking to retail. Whether you want to broaden your knowledge base or narrow your scope and specialize in a specific sector, you can find your opportunity here.

Who You Are

You re 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.

Disclaimer: This job posting has been aggregated from external source. Role details, content, and availability are subject to change. Applicants are advised to confirm the latest information directly on the company website before applying.