Mainframe Network Engineer

At Kyndryl, we design, build, manage and modernize the mission‑critical technology systems that the world depends on every day. So why work at Kyndryl? We are always moving forward – always pushing ourselves to go further in our efforts to build a more equitable, inclusive world for our employees, our customers and our communities.

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.

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 won’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.

Kyndryl currently does not require employees to be fully vaccinated against COVID‑19, however, if you are hired to work at a client, customer, or partner location, you may be required to show proof of vaccination to align with their respective COVID‑19 vaccination policies. Those who believe they are eligible may apply for a medical or religious accommodation prior to the start of employment.

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.

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.

Minimum 5+ years of experience in Typically in mainframe networking or z/OS communications support

Ability to analyze logs, traces, and dump information relevant to communications issues

Solid knowledge and experience on TCP/IP on z/OS , VTAM, SNA /…