Mainframe Network Engineer

Mainframe Network Engineer (Hybrid Role)
Locations:

Chandler, AZ

Plano, TX

Charlotte, NC

Jersey City, NJ

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.

* This role requires employees to live in or around the Phoenix, AZ area. You will be responsible to be onsite 3 days a week. We will consider candidates who are willing to relocate to the area.

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:

o             Distributed servers

o             External vendors/partners

o             Internal enterprise applications

o             Middleware platforms

•             Diagnose and resolve connectivity issues involving:

o             IP routing

o             Port communication

o             Session failures

o             DNS resolution

o             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