Mainframe Top Secret Security Administrator (Software Engineer III)

Mainframe Top Secret Security Administrator (Software Engineer III)

Remote / Telework (Work From Home)

Duration

February 2 2026 - August 31 2026

Up to 600 total hours

Potential for renewal (up to three one-year extensions)

May require occasional after-hours or weekend support with prior approval

Role Overview

We are seeking a senior-level Mainframe Top Secret Security Administrator to support legacy systems and mainframe modernization initiatives. This role serves as a subject matter expert (SME) for mainframe security and z/OS administration ensuring secure compliant and reliable operation of mission-critical systems.

The ideal candidate has deep hands-on experience with Top Secret Security (TSS) z/OS administration certificate management access controls and mainframe operational support in highly regulated environments.

Key Responsibilities

• • Serve as the SME for Mainframe Top Secret Security (TSS) to maintain system security compliance and audit readiness
  • Perform advanced z/OS systems administration including configuration upgrades break/fix support and ongoing 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
  • Provide end-user support for ISV tools such as BlueZone
  • Coordinate with network customer support and application teams to ensure stable daily operations
  • Support data integration and change data capture processes (IMS VSAM) as needed
  • Contribute expertise to both legacy system operations and mainframe transformation initiatives

Required Qualifications

• • 8 years of hands-on experience with Top Secret Security (TSS)
  • 5 years of hands-on z/OS administration experience
  • 5 years working with:
  • JES
  • 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

Preferred Qualifications

• • Experience with performance monitoring and initial performance analysis
  • Experience with Informatica Power Exchange Administration
  • Experience with REXX scripting

Technical Knowledge (Preferred / Working Knowledge)

• • z/OS Operations
  • z/OS Networking (VTAM TCP/IP)
  • Automated job scheduling tools (e.g. JOBTRAC)
  • Terminal emulation tools (BlueZone)
  • VTAM session management tools
  • SMP/E
  • RMF SMF WLM
  • JCL
  • GRS
  • VSAM
  • TSO

Additional Requirements

• • Ability to access secure environments via remote access tools (e.g. GoToMyPC)
  • May be required to work evenings weekends or holidays with prior approval

Required Skills:

Mainframe