The RoleAbout the Role: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.
Role Responsibilities:
Mainframe Network Administration:
- 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.
Network Connectivity & Support:
- Ensure stable communication between mainframe systems and: Distributed servers External vendors/partners Internal enterprise applications Middleware platforms
- Diagnose and resolve connectivity issues involving: IP routing Port communication Session failures DNS resolution Firewall-related blocks Support file transfer protocols such as FTP, SFTP, and other secure data exchange solutions.
Security & Compliance:
- 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.
Disaster Recovery & Resiliency:
- 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.
Required Qualifications: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.
Preferred Experience:
- 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
- IBM mainframe or networking certifications are a plus
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.
Who You AreRequired Qualifications: Minimum 5+ years of experience in • Typically 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.
Preferred Experience 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 IBM mainframe or networking certifications are a plus
