Key Skills: Mainframe network administration Session managers CA TPX, CL/Super

Session VTAM,SNA and TCP/IP on z/OS Session manager migration experience ROLE PROFILE Job Description/ 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/Super

Session 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/Super

Session 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 Strong expertise in SNA and TCP/IP protocols CA TPX, CL/Super

Session 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/Super

Session 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 Robust expertise in SNA and TCP/IP protocols CA TPX, CL/Super

Session 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 Migrating to CL/Super

Session from other platforms

📌 Mainframe Network Administrator (Toronto)
🏢 J M Group
📍 Toronto