Mainframe Network Architect

IPolarity

. Lead installation, configuration, and upgrading of z/OS environments across development and production systems .

Posted 10/24/2026full-timeRemote • United StatesMid-LevelSenior💰 $60 per hourWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in z/OS system programming, architecture design, and performance management, ensuring high availability and reliability of mainframe environments. Proficient in managing security policies and providing technical leadership to teams.

Highest-signal resume keywords

Z/OS System ProgrammingSysplex ConfigurationPerformance AnalysisMainframe Networking ProtocolsTechnical Leadership

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Z/OS ArchitectureCapacity PlanningWorkload ManagementJCLSMP/EIOCPHCDPARMLIBRouting ProtocolsISV Software Management

Soft Skills

MentoringProblem ResolutionCollaboration

Tools & Technologies

SNAVTAMTCP/IPOSA Networking Interfaces

Industry Keywords

Datacenter MigrationDisaster Recovery ProceduresSecurity PoliciesSystem ReliabilityEnvironment Stability

Tech Stack

Tools & technologies

TCP/IP

About the role

Key responsibilities & impact

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 and 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 procedures
Ensure high availability, system reliability, and environment stability
Support incident and problem determination and resolution within SLA timelines
Provide technical leadership, mentoring, and guidance to teams

Requirements

What you’ll need

Manage and support mainframe networking protocols: SNA, VTAM, TCP/IP
Configure and maintain OSA networking interfaces
Strong understanding of enterprise network infrastructure and security
Knowledge of routing protocols such as OSPF
Strong experience in z/OS system programming and System z architecture
Expertise in Sysplex configuration, LPAR management, and system integration
Hands-on experience with SMP/E, IOCP, HCD, PARMLIB, and system configurations
Experience installing and maintaining z/OS releases, RSU maintenance, and ISV products
Knowledge of JCL, utilities, batch, and online processing environments