Mainframe Network Engineer

Kyndryl • Phoenix, AZ

3d

About The Position

The Mainframe Network Engineer is responsible for the design, configuration, implementation, and support of network connectivity for IBM mainframe environments. This role ensures reliable, secure, and high-performing communication between mainframe systems, distributed platforms, external partners, and enterprise applications. The engineer will work on key technologies such as TCP/IP, VTAM, SNA, Enterprise Extender, TN3270, FTP, and network security controls, supporting critical production workloads in large enterprise environments.

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. You’ll also get the chance to share your expertise by recommending modernization options, identifying new business opportunities, and cultivating relationships with other teams and stakeholders. Does the work get challenging at times? Yes! But you’ll collaborate with a diverse group of talented people and gain invaluable management and organizational skills, which will come in handy as you move forward in your career.

Requirements

• Minimum 5+ years of experience in mainframe networking or z/OS communications support
• Familiarity with JCL, TSO/ISPF, SDSF
• Ability to analyze logs, traces, and dump information relevant to communications issues
• Solid knowledge and experience on TCP/IP on z/OS, VTAM, SNA / Enterprise Extender, TN3270, FTP / SFTP and TLS.

Nice To Haves

• Experience in supporting transmission products such as Connect Direct.
• The ability to work independently as well as part of a team
• Excellent troubleshooting and customer service skills
• Participate in on-call rotation with the engineering teams.
• The ability to follow a project through to completion, and/or to work as part of a larger team to complete the components of a complex project

Responsibilities

• Install, configure, and maintain z/OS Communications Server components.
• Support and manage TCP/IP configuration on z/OS systems.
• Maintain and troubleshoot VTAM definitions and network resources.
• Configure and support Enterprise Extender (EE) and SNA connectivity where applicable.
• Maintain TN3270 access and session-related connectivity for end users and applications.
• Ensure stable communication between mainframe systems and distributed servers, external vendors/partners, internal enterprise applications, and middleware platforms.
• Diagnose and resolve connectivity issues involving IP routing, port communication, session failures, DNS resolution, and firewall-related blocks.
• Support file transfer protocols such as FTP, SFTP, and other secure data exchange solutions.
• Work closely with network security teams to enforce secure communication protocols.
• Ensure compliance with enterprise security controls and audit requirements.
• Support SSL/TLS certificate implementation and secure transmission standards.
• Assist with firewall rule validation, port usage reviews, and vulnerability remediation.
• Support network design and recovery procedures for Disaster Recovery (DR) environments.
• Validate communication paths for failover systems and backup data centers.
• Participate in DR tests and business continuity exercises.

Benefits

• Opportunities for Cloud Hyperscalers
• Hands-on experience
• Learning opportunities
• Chance to certify in all four major platforms
• Benefits that give you choice, reflect the diversity of our employees and support you and your family
• Employee learning programs give you access to the best learning in the industry to receive certifications, including Microsoft, Google, Amazon, Skillsoft, and many more.
• Company-wide volunteering and giving platform

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed