• Systems Administrator ( Linux

    RTX Corporation (Mckinney, TX)
    …intelligent solutions for the global aerospace and defense industry. We are currently seeking a Linux Systems Administrator that will be working onsite in a ... highly collaborative, multi-platform and multi-disciplined environment. The Systems Administrator is required to have an...Administration in a heterogeneous Redhat 7 & 8 Enterprise Linux environment. + Understanding and knowledge of Linux more
    RTX Corporation (12/02/25)
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  • Principal Linux Administrator (Top…

    RTX Corporation (Richardson, TX)
    …RTX **Enterprise Services** team: **Role Overview:** RTX is seeking a Principal Linux Administrator to support a highly virtualized Enterprise infrastructure ... + Perform software upgrades, patching, and system maintenance on Linux systems . + Troubleshoot issues and apply...processes and ensure compliance with organizational policies. + Provide remote support for systems across multiple locations.… more
    RTX Corporation (12/12/25)
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  • Senior Linux System Administrator

    GovCIO (Austin, TX)
    **Overview** GovCIO is currently hiring for an experienced Linux System Administrator with an active Secret clearance to join an Operations team. This position ... role, you will work with other members to mitigate vulnerabilities on Linux -based systems , implement STIGs, address POAMs, and mitigate Zero-Day vulnerabilities.… more
    GovCIO (11/07/25)
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  • Systems Administrator Autonomic…

    Lockheed Martin (Fort Worth, TX)
    …your future\! This role is for a full time on\-site System Administrator for the Joint Strike Fighter \(JSF\) Program Autonomic Logistics Information System ... selected candidate will work a 3rd shift \(overnight\) position\. The system Administrator is responsible for providing the overall on\-site ALIS maintenance and… more
    Lockheed Martin (12/17/25)
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  • PDM/PLM Application Administrator

    RTX Corporation (Plano, TX)
    …technologies, tools, or methodologies: PTC Windchill, Oracle database, Apache web server, Linux & Windows server operating systems , Shell scripting, CAD tools ... security clearance​ **Security Clearance:** Top Secret - Current **Application System Administrator (PDM/PLM - Windchill) - Active TS Clearance required** **Business… more
    RTX Corporation (11/24/25)
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  • Cyber Administrator

    CAE USA INC (Arlington, TX)
    …candidate will demonstrate proficiency in both Microsoft Windows and Linux systems administration, including hardening, deployment, configuration, maintenance, ... advancement and having fun! Summary We are seeking a mission-focused System Administrator to support IT operations and cybersecurity readiness in a defense… more
    CAE USA INC (12/24/25)
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  • Multi Cloud Linux Engineer

    NTT America, Inc. (Plano, TX)
    …Key Responsibilities Cloud Linux Operations & Support Provide support for Linux -based systems across on-premises and cloud environments (AWS, Azure, GCP, ... Skills In-depth expertise in provisioning, configuring, securing, supporting, and optimizing Linux -based systems (RHEL, CentOS, Ubuntu, etc.) in enterprise… more
    NTT America, Inc. (01/01/26)
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  • Multi Cloud Linux Engineer

    NTT America, Inc. (Plano, TX)
    …Responsibilities** **Cloud Linux Operations & Support** Provide support for Linux -based systems across on-premises and cloud environments (AWS, Azure, GCP, ... Skills** In-depth expertise in provisioning, configuring, securing, supporting, and optimizing Linux -based systems (RHEL, CentOS, Ubuntu, etc.) in enterprise… more
    NTT America, Inc. (12/31/25)
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  • Network Administrator Autonomic Logistics…

    Lockheed Martin (Fort Worth, TX)
    …\- Extensive network operations and troubleshooting experience with Unix, Linux , Windows operating systems and network hardware \(e\.g\., ... your future\! This role is for a lead Network Administrator with a System Administrator background for...and environment hardware * Providing tiered troubleshooting of IT systems and network equipment using network schematics, diagrams, and… more
    Lockheed Martin (11/27/25)
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  • Network Administrator Autonomic Logistics…

    Lockheed Martin (Fort Worth, TX)
    …network installations/integrations \- Extensive ops and troubleshooting experience with Unix, Linux , Windows operating systems and network hardware \(e\.g\., ... experience your future\! This role is for the Network Administrator for the F\-35 Joint Strike Fighter \(JSF\) ALIS...point of contact for any issues stemming from these systems \. This role provides solutions to a variety of… more
    Lockheed Martin (12/13/25)
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