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Niche mainframe skillset reduces applicant density despite mid-level, metro location, and large services-brand presence.
Mainframe HNS expertise is industry-specific and not easily transferable across sectors.
Explicit 5–8 year requirement and mandatory VTAM/z/OS network expertise make screening highly selective.
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Lead end-to-end support and maintenance of mainframe Host Network Services (HNS) including VTAM, TCP/IP, and Communication Server technologies to ensure system stability and performance.
Perform advanced troubleshooting and root cause analysis using diagnostic tools such as packet trace analysis, dumps, and VTAM traces to resolve complex production incidents.
Manage host network configurations, session management, PAGENT policies, and support mission-critical production environments across varied industry clients.
5 to 8 years of experience in Mainframe Networking / Host Network Services (HNS) support.
Strong hands-on expertise with VTAM, TCP/IP on z/OS, z/OS Communication Server, and PAGENT.
Proven advanced troubleshooting skills including packet trace analysis, performance tuning, and debugging complex issues in enterprise environments.
Work Experience Required: 5 to 8 years in relevant mainframe networking roles.
Experienced in managing and supporting mission-critical mainframe network production environments with focus on high availability and resilience.
Has subject matter expert level skills in VTAM, TCP/IP, and communication server technologies and root cause analysis in enterprise-scale settings.
Capable of working in customer-facing roles within managed services or global delivery environments, balancing technical expertise with service delivery.