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Mainframe Network Engineer

StoneGate-Technologies LLCChandler, AZ🇺🇸United StatesPosted Oct 12, 2026

Quick Overview

Seniority
Mid Senior
Work mode
Hybrid
Location
Chandler, AZ, United States
Posted
19 hours ago
TCP/IPDNS

Job Description

Mainframe Network Engineer (Openings: 1 Position)
Location: Chandler, AZ; Plano, TX; Charlotte, NC; and Jersey City, NJ from Day 1 (Client prefer only local folks)
Hybrid Schedule: 3 Onsite Days (Tue, Wed, Thur) & 2 Remote Days (Mon, Fri)
Duration: 6+ months, extendable
It is with Banking client with Implementation partner
Mode of Interview: 2 Rounds mostly in person
Job Description
  • 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.
Job 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.

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