Responsible for the design, configuration, implementation, and support of network connectivity for IBM mainframe environments.
Ensure reliable, secure, and high-performing communication between mainframe systems, distributed platforms, external partners, and enterprise applications.
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.
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.
Diagnose and resolve connectivity issues involving: IP routing, Port communication, Session failures, DNS resolution, Firewall-related blocks.
Work closely with network security teams to enforce secure communication protocols.

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.
Experience in supporting transmission products such as Connect Direct.
IBM mainframe or networking certifications are a plus

Mainframe Network Engineer

Key skills