Remote Senior Mainframe Network & Security Engineer (z/OS)

System Soft Technologies; New York (NY); Remote; USD 120,000 - 150,000; Full time

Job summary

System Soft Technologies is seeking a Senior Mainframe Network & Security Engineer (IBM z/OS) for a remote role. You will administer z/OS network infrastructure, manage TLS/SSL certs, and coordinate with Cybersecurity for security standards and audits.

The position emphasizes disaster recovery planning, high availability, and incident resolution in a large enterprise environment. You will mentor junior staff, document architecture and procedures, and participate in system upgrades and vendor

Qualifications

• 10+ years of experience supporting IBM z/OS enterprise environments.
• Strong expertise in z/OS systems programming and administration.
• Experience with IBM mainframe networking and security controls.

Responsibilities

• Administer and support z/OS network infrastructure (TCP/IP, VTAM, SNA, NJE, OSA).
• Monitor and troubleshoot network performance, connectivity, and routing issues.
• Configure and maintain network security controls for internal and external connectivity.
• Support high-availability and disaster recovery networking solutions.
• Manage digital certificates and PKI infrastructure across the mainframe environment.
• Collaborate with Cybersecurity teams on security standards and audit requirements.
• Provide advanced support for IBM z/OS operating systems and subsystems.
• Assist with system upgrades, maintenance, and vendor product implementations.
• Lead root-cause analysis of complex infrastructure incidents and document procedures.

Skills

Mainframe Networking

z/OS Systems Programming

TCP/IP Troubleshooting

SSL/TLS Certificates

SFTP/SSH/FTPS

Disaster Recovery

Security Compliance

Leadership Mentoring

Tools

VTAM

SNA

NJE

Enterprise Extender

MFT

Job description

System Soft Technologies is seeking a Senior Mainframe Network & Security Engineer (IBM z/OS) for a remote role. You will administer z/OS network infrastructure, manage TLS/SSL certs, and coordinate with Cybersecurity for security standards and audits.

The position emphasizes disaster recovery planning, high availability, and incident resolution in a large enterprise environment. You will mentor junior staff, document architecture and procedures, and participate in system upgrades and vendor