• Principal Systems

    BAE Systems (Merrimack, NH)
    …Other incentives may be available based on position level and/or job specifics. ** Principal Systems Administrator ** **113660BR** EEO Career Site Equal ... Systems is seeking a highly trained and motivated Principal Closed Area Systems Administrator ...8570 IAT Level II certification + Active US Government Top Secret Clearance with ability to obtain… more
    BAE Systems (06/19/25)
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  • Sr Principal Systems

    Northrop Grumman (Aurora, CO)
    …the warfighter. Come be a part of our mission. Northrop Grumman is seeking a **Sr Principal Systems Administrator ** to join our team at our facility in ... with 12 years of IT experience is required + **Candidate must have active/current Top Secret /SCI clearance with adjudicated Full Scope Polygraph at time of… more
    Northrop Grumman (06/12/25)
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  • Principal Systems

    RTX Corporation (Tucson, AZ)
    …US citizens are eligible for a security clearance​ **Security Clearance:** DoD Clearance: Secret ** Principal Systems Administrator - 100% onsite, Tucson, ... our systems and support IT infrastructures around the world. ** Principal System** **Administrators,** internally known as Principal Analyst, infrastructure… more
    RTX Corporation (06/26/25)
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  • Principal Systems

    ManTech (Arlington, VA)
    **MANTECH** seeks a motivated, career and customer-oriented ** Principal Systems Administrator ** to join our team in **Pentagon, VA.** The position is ... software, network, and application issues + Manage and maintain computer systems , servers, and other IT infrastructure, ensuring optimal performance and security… more
    ManTech (08/08/25)
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  • Linux Systems Administrator

    Northrop Grumman (Wright Patterson AFB, OH)
    …and problem-solving skills **Basic Qualifications for a Principal Systems Administrator ** : + Active Department of Defense Top Secret /Sensitive ... Northrop Grumman is seeking a Linux Systems Administrator / Principal Systems Administrator ... Administrator :** + Active Department of Defense Top Secret /Sensitive Compartmented Information security clearance +… more
    Northrop Grumman (07/03/25)
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  • Linux Systems Administrator

    Northrop Grumman (Wright Patterson AFB, OH)
    …US citizenship with an active TS /SCI clearance **Basic Qualifications for a Principal Systems Administrator :** + Bachelor's degree in a Science, ... only part of history, they're making history. Northrop Grumman is seeking a Linux Systems Administrator to maintain and enhance Linux Systems and… more
    Northrop Grumman (05/29/25)
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  • Principal Linux Systems

    Leidos (Aurora, CO)
    **Description** **Leidos** has a new and exciting opportunity for a ** Principal Linux Systems Administrator ** in our **National Security Sector's (NSS) Cyber ... lasting impactful results. Join our team as a **Linux Systems Administrator ** , where you'll provide crucial...Virtualization + **Security Clearance** : Must have an active Top Secret /SCI with Polygraph cssrc conmd Come… more
    Leidos (05/13/25)
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  • Sr. Principal Linux Systems

    RTX Corporation (El Segundo, CA)
    …eligible for a security clearance​ **Security Clearance:** TS /SCI with Polygraph **Sr. Principal Linux Systems Administrator - El Segundo, CA -Must have a ... tough, meaningful problems that create a safer, more secure world. **Sr Principal System Administrator ** in infrastructure Workplace Services, collaborate with a… more
    RTX Corporation (08/01/25)
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  • Linux Principal Windows Systems

    Serco (Kirtland AFB, NM)
    **Position Description** Serco is seeking a Linux Principal Windows Systems Administrator to join our team supporting the Defense Systems sector at ... other legally protected characteristics. Click here to apply now (https://careers-sercous.icims.com/jobs/69556/linux- principal -windows- systems - administrator /job?mode=apply&apply=yes&in\_iframe=1&hashed=-1834477830) **New to Serco?** Join… more
    Serco (05/17/25)
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  • Principal Linux Systems

    Leidos (Annapolis Junction, MD)
    **Description** **Leidos** has a new and exciting opportunity for a Principal Linux Systems Administrator in our **National Security Sector's (NSS) Cyber & ... in National Security!** **Job Summary:** Leidos is seeking a Principal Linux Systems Administrator with...HCI, etc.) + **Clearance Required: Must have an active TS /SCI with Polygraph** **At Leidos, the opportunities are boundless.… more
    Leidos (07/31/25)
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