• Sr. Principal Linux Systems…

    RTX Corporation (El Segundo, CA)
    …for a security clearance​ **Security Clearance:** TS /SCI with Polygraph **Sr. Principal Linux Systems Administrator - El Segundo, CA -Must have a ... create a safer, more secure world. **Sr Principal System Administrator ** in infrastructure Workplace Services, collaborate with a many...a security clearance** . + Must have experience with Linux systems administration + Experience with one… more
    RTX Corporation (08/01/25)
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  • Linux / Unix Systems…

    Lockheed Martin (Sunnyvale, CA)
    …National Security Space programs in Sunnyvale, CA\. **Your Mission:** As a Linux Information Systems Administrator , your responsibilities will include: ... vulnerabilities, and perform system hardening to ensure the security of our systems \. * Root Cause Analysis: Perform in\-depth analysis to resolve technical issues… more
    Lockheed Martin (07/12/25)
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  • Senior Systems Administrator…

    GovCIO (Sacramento, CA)
    **Overview** GovCIO is hiring for a Senior Systems Administrator ( Linux and Windows) to provide on-going support for the administration of the core system ... willing to work nights, have an active Security+ certification, and an active Top Secret clearance. **Responsibilities** In this role you will: Provide support… more
    GovCIO (07/09/25)
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  • Senior Linux System Administrator…

    BAE Systems (San Diego, CA)
    …BAE Systems . BAE Systems is seeking a Senior Closed Area Linux Systems Administrator to provide comprehensive technical and operational support for ... OU structure, and GPOs. + Install, configure, and maintain Linux -based servers and systems . + Configure, deploy,...Skills** US Citizenship is required by contract. Active US Top Secret Security Clearance / SCI is… more
    BAE Systems (07/31/25)
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  • IT Systems Administrator…

    SpaceX (Hawthorne, CA)
    IT Systems Administrator - Top Secret ...both formal and informal situations. ADDITIONAL REQUIREMENTS: + Active Top Secret or TS /SCI with ... enabling human life on Mars. IT SYSTEMS ADMINISTRATOR - TOP SECRET CLEARANCE...addition to broader experience and capability with networking and Linux technologies. This employee will be a member of… more
    SpaceX (07/12/25)
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  • Systems Engineer w/ TS /SCI

    General Dynamics Information Technology (Livermore, CA)
    …RQ203428 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job ... ours. At GDIT, people are our differentiator. As a Systems Engineer with an active TS /SCI you...and network devices. + Provide engineering support for the systems administrator for systems issues… more
    General Dynamics Information Technology (07/16/25)
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  • Senior Linux System Administrator

    General Dynamics Information Technology (Livermore, CA)
    …Yes **Job Description:** $10K Sign-on bonus A Senior Linux System Administrator Maintains an organization's computer systems ' workflows and is responsible ... RQ192592 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job… more
    General Dynamics Information Technology (05/10/25)
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  • Principal Linux Administrator

    RTX Corporation (El Segundo, CA)
    …only US citizens are eligible for a security clearance​ **Security Clearance:** DoD Clearance: Top Secret At Raytheon, the foundation of everything we do is ... field and minimum 3 years experience. + Active and transferable US government issued Top Secret security clearance is required prior to start date. US… more
    RTX Corporation (06/23/25)
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  • Linux System Administrator

    Leidos (San Diego, CA)
    …Maritime Systems Division (MSD) is seeking an experienced, dynamic, and highly capable Linux system administrator to join the Leidos team at a customer site ... in platform signature measurement. Key Responsibilities: * Install, configure, and maintain Linux -based servers and systems (RedHat, CentOS, Ubuntu, etc.). *… more
    Leidos (07/18/25)
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  • Sr Principal Windows Systems…

    Northrop Grumman (Palmdale, CA)
    …permissions **Preferred Qualifications** : + Bachelor's degree in Information Technology + Active Top Secret , TS /SCI, Polygraph, or SAP/SAR access would be ... RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE TYPE: Top Secret TRAVEL: Yes, 10% of...Solutions team is seeking a highly experienced **Senior Windows Systems Administrator ** to join its dynamic team… more
    Northrop Grumman (07/09/25)
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