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Sistema Technologies, Inc.

Sistema Technologies, Inc.

via LinkedIn

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Mainframe Security Admin

Anywhere
Contract
Posted 1/13/2026
Verified Source
Key Skills:
Mainframe Top Secret Security Administration
z/OS Administration
Security Compliance

Compensation

Salary Range

$200K - 250K a year

Responsibilities

Support and maintain mainframe security, system administration, and compliance in a highly specialized environment.

Requirements

Extensive experience with mainframe security, z/OS, and related technologies, along with specific skills in certificates, SFTP, and performance monitoring.

Full Description

We are seeking an experienced Job Title for a remote contract in Texas. Responsibilities: • Serve as a subject-matter expert in Mainframe Top Secret Security Administration to maintain data security and regulatory compliance. • Work involves highly advanced (senior-level) systems administration in support of agency mainframe applications and supporting infrastructure; and coordinate day-to-day system administration functions such as mainframe configuration, break/fix system support, and base user account creation/support. • Work requires strong and proven hands-on experience in Mainframe Top Secret Security Administration and z/OS Administration. • Work also requires expertise in certificate renewals and access control within mainframe environments as well as a strong understanding of security compliance, audit practices, and risk mitigation. • Routine system administration functions to include security administration support, performance monitoring, security monitoring, and system maintenance. • Work includes supporting data entry and control work processes, overseeing and coordinating mainframe operations in the State’s Consolidated Data Center Services (DCS), and working with the Network Administration, Customer Support and Applications Development & Support teams to provide support necessary for day-to-day mainframe operations. • Experience with Informatica Power Exchange Administration for Change Data Capture processing using mainframe data sources and targets (i.e., IMS and VSAM) a plus. • The Worker will apply their expert knowledge and experience as a Mainframe Top Secret Security Administrator to support both the needs of the Legacy Systems as well as those for the Mainframe Transformation Team. • Provide primary support as the subject matter expert for z/OS operating systems and system components; provide direct technical support as needed in the planning, implementation and testing of releases, upgrades, or changes to z/OS operating system, network, and component software. • Provide end user support for assigned Independent Software Vendor (ISV) products such as BlueZone. • Diagnose platform, software and related product issues and follow up with root cause analysis. • Assist with maintaining and providing technical support for Mainframe Production Control and Support Jobs and monthly Mainframe Job Scheduler. Minimum Qualifications: • 8 years of Hands-On Experience with TSS (Top Secret Security) • 5 years of Hands-On Experience with z/OS Administration • 5 years experience with JES2, z/OS Unix System Services (OMVS), Storage Management Subsystem (SMS) • 3 years experience with TLS configuration (certificates, SSL – RSA Keys, SFTP, FTPS) Preferred Qualifications: • Experience with performance monitoring to include initial analysis of performance issues • Experience with Informatica Power Exchange Administration • Working knowledge for each of the following: z/OS Operation z/OS Networking – VTAM (Virtual Telecommunications Access Method), TCP/IP (Transmission Control Protocol/Internet Protocol) • Working knowledge of each of the following: z/OS-centric automated job scheduling and management software (JOBTRAC) Terminal Emulator Software (BLUEZONE) VTAM Session Manager Software (VTAM/SWITCH) • Working knowledge of each of the following: SMP/E (System Modification Program/Extended) RMF (Resource Measurement Facility) SMF (System Management Facility) WLM (Workload Management) • Working knowledge of each of the following: JCL (Job Control Language) GRS (Global Resource Serialization) VSAM (Virtual Storage Access Method) TSO (Time Sharing Option) • Experience with REXX What We Offer: Sistema offers competitive pay and solid benefits, including medical, dental, and vision coverage. We keep things simple, focus on people, and prioritize long-term relationships with our clients and consultants. Apply now if you’re a clear communicator, problem solver, and ready to work remote in Texas!

This job posting was last updated on 1/15/2026

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