• Principal Windows System…

    RTX Corporation (El Segundo, CA)
    …eligible for a security clearance​ **Security Clearance:** TS/SCI with Polygraph **Principal Windows Systems Administrator - El Segundo, CA -Must have a ... TS/SCI with Counterintelligence (CI) Polygraph ​ active clearance required, 100% onsite, we offer relocation!**...are eligible for a security clearance. + Must have Windows systems administration experience + Must have… more
    RTX Corporation (07/11/25)
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  • IT Systems Administrator - Top…

    SpaceX (Hawthorne, CA)
    IT Systems Administrator - Top Secret Clearance Hawthorne, CA Apply SpaceX was founded under the belief that a future where humanity is out exploring the stars ... ultimate goal of enabling human life on Mars. IT SYSTEMS ADMINISTRATOR - TOP SECRET CLEARANCE SpaceX...BASIC QUALIFICATIONS: + 4+ years of experience in IT systems administration. + Experience with Windows servers… more
    SpaceX (07/12/25)
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  • Sr. Principal Linux Systems

    RTX Corporation (El Segundo, CA)
    …US citizens are eligible for a security clearance​ **Security Clearance:** TS/SCI with Polygraph **Sr. Principal Linux Systems Administrator - El Segundo, CA ... -Must have a TS/SCI with CI Polygraph active clearance, we offer relocation!** At Raytheon, the...create a safer, more secure world. **Sr Principal System Administrator ** in infrastructure Workplace Services, collaborate with a many… more
    RTX Corporation (08/01/25)
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  • System Administrator 3

    M. C. Dean (Sacramento, CA)
    …seeking a **System Administrator 3** to join our **Security and Electronic Systems (SES)** business Unit. As part of **(SES)** Strategic Business Unit you will ... to meet service level agreements. + Configure and manage Windows operating systems and install/load operating system...Clearance with the ability to obtain a TS/SCI w/ Polygraph is REQUIRED** **Key Requirements:** + Education: + Bachelor's… more
    M. C. Dean (07/15/25)
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  • Senior Linux System Administrator

    General Dynamics Information Technology (Livermore, CA)
    …**Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job Family:** Systems Administration **Skills:** ... Linux,Microsoft Server Operating Systems ,Microsoft Windows Environment **Certifications:** Security+, CE - Sec+ CE - CompTIA **Experience:** 8 + years of related… more
    General Dynamics Information Technology (08/09/25)
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  • Network System Administrator

    ManTech (Los Angeles, CA)
    **ManTech** seeks a motivated, career and customer-oriented **Network System Administrator ** **III** to join our team in **Los Angeles, CA.** The primary function is ... limited to:** + Install, maintain, audit and support a secure MS Windows network environment and limited web/data application service. + Maintain internet… more
    ManTech (06/14/25)
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  • Systems Engineer w/ TS/SCI

    General Dynamics Information Technology (Livermore, CA)
    Polygraph **Public Trust/Other Required:** None **Job Family:** Systems Engineering **Skills:** Microsoft Windows ,Storage,Unix **Certifications:** Security + ... SYSTEMS ENGINEER WILL MAKE AN IMPACT + Performs systems design, development, and integration in a Windows...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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