Mainframe Network Architect

IPolarity LLC; Oregon; Hybrid; USD 120,000 - 180,000; Full time

Job summary

IPolarity LLC seeks a seasoned Mainframe System/Network Architect (z/OS) for a remote role in the United States. You will lead the installation, configuration, and upgrades of z/OS environments across development and production, focusing on performance, security, and reliability.

The role covers Sysplex integration, CFRM policies, LPAR management, and DR planning. You will work with SNA, VTAM, TCP/IP, OSA interfaces, and ensure high availability while collaborating with application teams to

Qualifications

• Extensive experience in z/OS system programming and mainframe architecture.
• Strong knowledge of Sysplex integration, CFRM policy design, and LPAR management.
• Hands-on with z/OS tools: SMP/E, RSU, HCD, PARMLIB and JCL environments.

Responsibilities

• Lead installation, configuration, and upgrades of z/OS across development and production.
• Design and manage z/OS architecture, Sysplex integration, and CFRM policies.
• Coordinate hardware and software upgrade projects, including datacenter moves.
• Perform performance analysis, tuning, capacity planning, and WLM.
• Ensure security, access control, DR procedures, and high availability.

Skills

z/OS

Mainframe Networking

Sysplex

LPAR management

CFRM policies

DR planning

Tools

SMP/E

RSU

HCD

PARMLIB

JCL

Job description

Mainframe System / Network Architect (z/OS)

Remote

Mainframe Networking & Infrastructure:

• Manage and support Mainframe Networking Protocols: SNA, VTAM, TCP/IP
• Configure and maintain OSA (Open System Adapter) networking interfaces
• Strong understanding of Enterprise Network Infrastructure and Security
• Knowledge of routing protocols such as Open Shortest Path First (OSPF)
• Manage z/OS network communications, connectivity, and performance optimization

System Programming & Architecture Skills:

• Strong experience in z/OS System Programming and System z architecture
• Expertise in Sysplex configuration, LPAR management, and system integration
• Hands-on with SMP/E, IOCP, HCD, PARMLIB, and system configurations
• Install and maintain z/OS releases, RSU maintenance, and ISV products
• Knowledge of JCL, utilities, batch and online processing environments

Key Responsibilities:

• Lead installation, configuration, and upgrading of z/OS environments across development and production systems
• Design and manage z/OS architecture, Sysplex integration, and CFRM policies
• Handle hardware and software upgrade projects, including datacenter migration and exit planning
• Perform performance analysis, tuning, capacity planning, and workload management (WLM)
• Monitor system software access, performance, and resource utilization
• Manage and maintain z/OS, JES3 environments and ISV software
• Work closely with application teams to ensure production stability and issue resolution
• Define and enforce security, access control, and software usage policies
• Implement and validate backup, recovery, and disaster recovery (DR) procedures
• Ensure high availability, system reliability, and environment stability
• Support incident/problem determination and resolution within SLA timelines
• Provide technical leadership, mentoring, and guidance to teams

This is a remote position.