Mainframe Network Engineer

Role:Mainframe Network Engineer

Location:Remote

Contract

W2

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,

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.