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Mainframe Security Admin

Job in Austin, Travis County, Texas, 78716, USA
Listing for: Sistema Technologies Inc.
Full Time position
Listed on 2026-01-15
Job specializations:
  • IT/Tech
    Systems Administrator, Cybersecurity, IT Support
Job Description & How to Apply Below
Position: Mainframe Security Admin 8031

Austin, TX Mainframe Security Admin (Solicitation# )

Railroad Commission of Texas (RRC)

Responsibilities
  • Serve as a subject‑matter expert in Mainframe Top Secret Security Administration to maintain data security and regulatory compliance.
  • Perform highly advanced (senior‑level) systems administration supporting agency mainframe applications and infrastructure; coordinate day‑to‑day system administration functions such as mainframe configuration, break/fix support, and base user account creation/support.
  • Provide expertise in certificate renewals and access control within mainframe environments, along with a strong understanding of security compliance, audit practices, and risk mitigation.
  • Handle routine system administration functions including security administration support, performance monitoring, security monitoring, and system maintenance.
  • Support data entry and control processes, oversee and coordinate mainframe operations in the State’s Consolidated Data Center Services (DCS), and collaborate with Network Administration, Customer Support, and Applications Development & Support teams to ensure day‑to‑day mainframe operations.
  • Experience with Informatica Power Exchange Administration for Change Data Capture processing using mainframe data sources and targets (e.g., IMS and VSAM) is a plus.
  • Apply expert knowledge of Mainframe Top Secret Security Administration to support both Legacy Systems and the Mainframe Transformation Team.
  • Act as the subject‑matter expert for z/OS operating systems and system components; provide direct technical support during planning, implementation, and testing of releases, upgrades, or changes to z/OS OS, network, and component software.
  • Provide end‑user support for assigned Independent Software Vendor (ISV) products such as Blue Zone.
  • Diagnose platform, software, and related product issues and conduct root cause analysis.
  • Assist with maintaining and providing technical support for Mainframe Production Control and Support Jobs and the monthly Mainframe Job Scheduler.

The working position is WFH/Telework.

Minimum Requirements
  • 8+ years hands‑on experience with TSS (Top Secret Security) – Required
  • 5+ years hands‑on experience with z/OS Administration – Required
  • 5+ years experience with JES2, z/OS Unix System Services (OMVS), Storage Management Subsystem (SMS) – Required
  • 3+ years experience with TLS configuration (certificates, SSL‑RSA Keys, SFTP, FTPS) – Required
  • 3+ years preferred experience with performance monitoring, initial analysis of performance issues
  • 3+ years preferred experience with Informatica Power Exchange Administration
  • 3+ years preferred working knowledge of z/OS Operation, z/OS Networking – VTAM, TCP/IP
  • 3+ years preferred working knowledge of z/OS‑centric automated job scheduling and management software (JOBTRAC), Terminal Emulator Software (BLUEZONE), VTAM Session Manager Software (VTAM/SWITCH)
  • 3+ years preferred working knowledge of SMP/E, RMF, SMF, WLM
  • 3+ years preferred working knowledge of JCL, GRS, VSAM, TSO
  • 2+ years preferred experience with REXX
References
  • Peer/Co‑Worker or Supervisor (Required)
  • Customer End‑User or Subordinate (Required)
  • Title (Optional)
  • Company Name (Required)
  • Phone Number (Required, include area code)
  • E‑mail address (Optional)
  • Professional Relationship (Optional)
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Position Requirements
5+ Years work experience
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