Mainframe Network Engineer

Job Description:Mainframe Network EngineerThe Mainframe Network Engineer is responsible for the design, configuration, implementation, and support of network connectivity for IBM mainframe environments.This role ensures reliable, secure, and high-performing communication between mainframe systems, distributed platforms, external partners, and enterprise applications. The engineers will work on key technologies such as TCP/IP, VTAM, SNA, Enterprise Extender, TN3270, FTP, and network security controls, supporting critical production workloads in large enterprise environments.Responsibilities: Mainframe Network Administration:Install, configure, and maintain z/OS Communications Server components.Support and manage TCP/IP configuration on z/OS systems.Maintain and troubleshoot VTAM definitions and network resources.Configure and support Enterprise Extender (EE) and SNA connectivity where applicable.Maintain TN3270 access and session-related connectivity for end users and applications.Network Connectivity and Support:Support file transfer protocols such as FTP, SFTP, and other secure data exchange solutions.Ensure stable communication between mainframe systems and:Distributed serversExternal vendors/partnersInternal enterprise applicationsMiddleware platformsDiagnose and resolve connectivity issues involving:IP routingPort communicationSession failuresDNS resolutionFirewall-related blocksSecurity and Compliance:Work closely with network security teams to enforce secure communication protocols.Ensure compliance with enterprise security controls and audit requirements.Support SSL/TLS certificate implementation and secure transmission standards.Assist with firewall rule validation, port usage reviews, and vulnerability remediation.Disaster Recovery and Resiliency:Support network design and recovery procedures for Disaster Recovery (DR) environments.Validate communication paths for failover systems and backup data centers.Participate in DR tests and business continuity exercises.Note:(Hybrid Role)Locations—candidates must be on site 3x/weekChandler, AZPlano, TXCharlotte, NCJersey City, NJVisa Preferred: H1B/ GC/ USCThis role requires employees to live in or around the Phoenix, AZ area. Candidates will be responsible to be onsite 3 days a week. We will consider candidates who are willing to relocate to the area.Pay Range: $55 to $65/ hr

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The specific compensation for this position will be determined by a number of factors, including the scope, complexity and location of the role as well as the cost of labor in the market; the skills, education, training, credentials and experience of the candidate; and other conditions of employment. Our full-time consultants have access to benefits including medical, dental, vision and 401K contributions as well as any other PTO, sick leave, and other benefits mandated by appliable state or localities where you reside or work.Type: ContractCategory: IT | Network EngineerDate Posted: 2026-10-09