Mainframe z/OS Network Engineer — VTAM & Secure File Transfer

U.S. Bank; Town of Brookfield (WI); On-site; USD 120,000 - 141,000; Full time

Job summary

U.S. Bank is seeking a seasoned mainframe network engineer to administer and optimize z/OS Communications Server environments. The role focuses on VTAM, TCP/IP, TN3270, and secure file transfers across platforms.

You will lead implementations of TPX Session Manager, Connect:Direct, and GDPS, ensuring high availability and disaster recovery readiness. The position requires strong troubleshooting, documentation, and collaboration with cross-functional teams.

Qualifications

• Associate's degree or equivalent work experience.
• 7+ years experience delivering day-to-day network services to clients.
• 7+ years experience within a total IT environment.

Responsibilities

• Administer, configure, tune, and troubleshoot z/OS Communications Server (VTAM, TCP/IP, TN3270).
• Install, maintain, test, document, and support mainframe software; perform root cause analyses.
• Manage TPX Session Manager; configure, maintain, optimize, and resolve issues.
• Install and support Connect:Direct and enterprise file transfer solutions for secure data exchange.
• Support GDPS configurations, disaster recovery readiness, and business continuity testing.
• Design and troubleshoot secure file transfers (FTP, SFTP, FTP-ATTLS) per security standards.
• Participate in network architecture, IP design, and cross-platform integrations between z/OS and distributed systems.
• Provide technical leadership via vendor evaluations, configuration management, standards, and on-call rotation.

Skills

z/OS Systems Programming

Mainframe networking

Network performance tuning

Security in file transfer

On-call rotation

Education

Associate degree or equivalent

Tools

TPX Session Manager

Connect:Direct

SMP/E

FTP/SFTP/FTP-ATTLS

GDPS

Job description

U.S. Bank is seeking a seasoned mainframe network engineer to administer and optimize z/OS Communications Server environments. The role focuses on VTAM, TCP/IP, TN3270, and secure file transfers across platforms.

You will lead implementations of TPX Session Manager, Connect:Direct, and GDPS, ensuring high availability and disaster recovery readiness. The position requires strong troubleshooting, documentation, and collaboration with cross-functional teams.