Description

You will serve as the Subject Matter Expert for Mainframe Top Secret Security (TSS) to maintain system security, compliance, and audit readiness.

Responsibilities

• Perform advanced z/OS systems administration, covering configuration, upgrades, break/fix support, and maintenance.
• Manage user access controls, security profiles, and certificate renewals (TLS/SSL, RSA keys, SFTP, FTPS).
• Provide technical support for system releases, upgrades, and infrastructure changes.
• Monitor system performance, diagnose issues, and conduct root cause analysis.
• Support mainframe production control, scheduled jobs, and batch processing.

Required Skills

• 8+ years of hands-on experience with Top Secret Security (TSS).
• 5+ years of hands-on z/OS administration experience.
• 5+ years working with: JES2, z/OS UNIX System Services (OMVS), Storage Management Subsystem (SMS).
• 3+ years of experience with TLS configuration, including certificates, SSL, RSA keys, SFTP, and FTPS.
• Strong understanding of mainframe security, compliance, auditing, and risk mitigation.
• Experience with JES2, JCL, VTAM, TCP/IP, GRS, VSAM, RMF, SMF, WLM.
• Experience with z/OS Operations and z/OS Networking (VTAM, TCP/IP).
• Experience with Terminal emulation tools (BlueZone).

Key Skills

Education

Any Gradute