Mainframe Network Admin
Remote
Mainframe Network administrator
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
Strong 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
Migrating to CL/SuperSession from other platforms