Mainframe Network Administrator

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

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/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