Mainframe Network Administator

Remote/USA/Canada

80-100 CAD T4

70/hr on W2

Key Skills

- Mainframe network administration
- Session managers – CA TPX, CL/SuperSession
- VTAM,SNA and TCP/IP on z/OS
- Session manager migration experience

ROLE PROFILE

/ Responsibilities Position Description:

The Mainframe Network administrator will manage, support, and modernize the mainframe networking environment. The applicant will design, configure, and support mainframe network infrastructure including VTAM, NCP, SNA, and TCP/IP, and will troubleshoot session-level connectivity and session management functions using CA TPX, CL/SuperSession and related tools. Excellent communication skills are required; previous session management migration experience is a plus.

The candidate will lead and execute the migration of session management and networking tools to updated or consolidated platforms, ensuring session continuity and minimal business disruption. Duties include configuring CA-TPX, CL/SuperSession for session routing, security, and user access; planning, testing, and implementing cutover and rollback strategies; coordinating timelines, dependencies, and risk mitigation with vendor teams and internal stakeholders; monitoring session performance pre/post-migration; and maintaining configuration and procedure documentation. The role also ensures security, audit, and regulatory compliance and provides L2/L3 support on an on-call rotation.

Required Skills:

- 8+ years hands-on mainframe networking

- Solid expertise in SNA and TCP/IP protocols

- CA TPX, CL/SuperSession configuration, administration, session routing and troubleshooting

- Session management tool and network software migration





- Session continuity and cutover/rollback planning

- VTAM, NCP, Communications Server for z/OS

- Troubleshooting, documentation and stakeholder communication

- Able to lead migrations end-to-end, including validation

Desired Skills:

- z/OS and related mainframe operating environments

- High expertise in handling tools like CA TPX and CL/Supersession

- Migrating to CL/SuperSession from other platforms

- Network security protocols and compliance frameworks

Additional or Advantageous Skills:

- BFSI, healthcare or large enterprise mainframe estates

- Vendor tool transition and vendor coordination

- L2/L3 support and on-call rotation

- 8+ years hands-on mainframe networking

- Strong expertise in SNA and TCP/IP protocols

- CA TPX, CL/SuperSession configuration, administration, session routing and troubleshooting

- VTAM, NCP, Communications Server for z/OS

- Able to lead migrations end-to-end, including validation
- z/OS and related mainframe operating environments

- High expertise in handling tools like CA TPX and CL/Supersession

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📌 Mainframe Network Administator (Toronto)
🏢 Diverse Lynx
📍 Toronto