Mainframe Network Engineer

Kyndryl

. Install, configure, and maintain z/OS Communications Server components .

Posted 10/27/2026full-timePhoenix • Arizona • United StatesMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in z/OS Communications Server components, TCP/IP configuration, and secure data exchange solutions. Proficient in troubleshooting connectivity issues and ensuring compliance with enterprise security controls.

Highest-signal resume keywords

Z/OS Communications SupportTCP/IP ConfigurationVTAM ManagementSecure Data Exchange SolutionsDisaster Recovery Procedures

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

TCP/IPVTAMSNA/Enterprise ExtenderTN3270FTPSFTPSSL/TLSJCLTSO/ISPFSDSF

Soft Skills

Troubleshooting SkillsCustomer Service SkillsTeam CollaborationIndependent Work

Tools & Technologies

Connect DirectFirewall ManagementNetwork Security Protocols

Certifications & Qualifications

IBM Mainframe CertificationNetworking Certification

Industry Keywords

Mainframe NetworkingEnterprise Security ControlsBusiness ContinuityDisaster RecoveryAudit Requirements

Tech Stack

Tools & technologies

DNSTCP/IP

About the role

Key responsibilities & impact

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 and SNA connectivity
Maintain TN3270 access and session-related connectivity
Ensure stable communication between mainframes, distributed servers, external vendors/partners, internal enterprise applications, and middleware platforms
Diagnose connectivity issues involving IP routing, port communication, session failures, DNS resolution, and firewall-related blocks
Support FTP, SFTP, and other secure data exchange solutions
Enforce secure communication protocols with network security teams
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
Support network design and recovery procedures for Disaster Recovery environments
Validate communication paths for failover systems and backup data centers
Participate in disaster recovery tests and business continuity exercises

Requirements

What you’ll need

Minimum 5+ years of experience in mainframe networking or z/OS communications support
Familiarity with JCL, TSO/ISPF, and SDSF
Ability to analyze logs, traces, and dump information relevant to communications issues
Solid knowledge and experience with TCP/IP on z/OS, VTAM, SNA/Enterprise Extender, TN3270, FTP/SFTP, and TLS
Experience supporting transmission products such as Connect Direct (preferred)
Ability to work independently and as part of a team
Excellent troubleshooting and customer service skills
Ability to participate in an on-call rotation with engineering teams
Ability to follow a project through to completion and/or contribute to complex projects
IBM mainframe or networking certifications are a plus
May be required to show proof of COVID-19 vaccination when working at a client, customer, or partner location

Benefits

Comp & perks

Access to employee learning programs and industry certifications, including Microsoft, Google, Amazon, Skillsoft, and more
Company-wide volunteering and giving platform
Ability to donate, start fundraisers, volunteer, and search over 2 million non-profit organizations
Employee benefits supporting employees and their families
Medical or religious accommodation process related to client/customer/partner COVID-19 vaccination policies