z/OS Top Secret Security Administrator-Remote role

Job Title: z/OS Top Secret Security Administrator Location: 100% Remote (USA Only) Client: State of Texas Experience Required: Minimum 15+ Years (Mandatory) Employment Type: Contract Job Description The State of Texas is seeking a highly experienced z/OS Top Secret Security Administrator to serve as a subject-matter expert supporting enterprise mainframe security operations. This role involves senior-level systems administration, security compliance, and direct support of legacy systems as well as mainframe transformation initiatives. The ideal candidate will have deep hands-on expertise in Top Secret Security (TSS) and z/OS administration, with a strong background in security governance, certificate management, audit readiness, and risk mitigation. Key Responsibilities Serve as a Subject Matter Expert (SME) in z/OS Top Secret Security Administration to ensure data security and regulatory compliance. Perform senior-level systems administration supporting mainframe applications and infrastructure. Manage day-to-day mainframe administration including configuration, break/fix support, and user account management. Administer Top Secret Security (TSS), access controls, certificate renewals, and TLS/SSL configurations. Monitor system and security performance; conduct root cause analysis for platform and software issues. Support production control, job scheduling, and monthly batch operations. Collaborate with Network, Customer Support, and Application Development teams within the State’s Consolidated Data Center Services (DCS). Provide end-user support for ISV tools such as BlueZone. Support legacy systems and contribute to mainframe modernization and transformation initiatives. Assist with Informatica PowerExchange administration for CDC processing (IMS/VSAM) when required. Required Skills & Experience 15+ years of hands-on experience with: Mainframe Top Secret Security (TSS) z/OS System Administration Strong experience with: JES2 z/OS Unix System Services (OMVS) Storage Management Subsystem (SMS) REXX scripting Performance monitoring and tuning Hands-on experience with: TLS configuration (Certificates, SSL, RSA Keys, SFTP, FTPS) Informatica PowerExchange Administration Experience diagnosing platform and software issues with root cause analysis Working Knowledge Required z/OS Operations z/OS Networking (VTAM, TCP/IP) Job scheduling tools (JOBTRAC) Terminal Emulators (BlueZone) VTAM Session Manager (VTAM/SWITCH) SMP/E RMF, SMF, WLM JCL GRS VSAM TSO Additional Information This is a highly specialized, senior-level role. Candidates must be US Citizens due to client requirements. 100% Remote within the United States.