• System Engineer ( TS /SCI)- Senior

    Vexterra Group (Bethesda, MD)
    …Microsoft Certified Solutions Expert (MCSE) Certification or MCSA (Microsoft Certified System Administrator ) + Experience with SAN or network storage setup and ... Description: Vexterra is looking to fill a Windows Systems Engineer and Administrator position within the Analysis Solutions Division (ASD) to support the National… more
    Vexterra Group (10/14/25)
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  • Sr . Principal Storage & Data Protection…

    RTX Corporation (Tucson, AZ)
    …required, as only US citizens are eligible for a security clearance​ **Security Clearance:** Top Secret - Current At Raytheon, the foundation of everything we do ... solutions to solve complex DT infrastructure problems. As a ** Senior Principal level System Administrator ,** this role...have a current and maintain a US government issued Top Secret security clearance is required. US… more
    RTX Corporation (12/05/25)
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  • Senior System Integrator Engineer…

    Vexterra Group (Bethesda, MD)
    Vexterra Group is currently searching for a Senior Systems Integrator Engineer to provide the following systems support in Reston VA or Bethesda, MD office: You will ... work closely with other infrastructure and network engineers, system engineers and O&M team members on...to include physical and virtualized environments * Set up administrator and service accounts, maintain system documentation, tune system… more
    Vexterra Group (10/14/25)
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  • Sr Principal Systems Administrator

    Northrop Grumman (Aurora, CO)
    …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 ... of history, they're making history. Northrop Grumman Space Systems (NGSP) is seeking a ** Sr Principal Systems Administrator ** to join our team at our facility in… more
    Northrop Grumman (11/13/25)
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  • Sr . System Administrator II (Temp)

    RTX Corporation (Annapolis Junction, MD)
    …US citizens are eligible for a security clearance​ **Security Clearance:** DoD Clearance: TS /SCI At Raytheon, the foundation of everything we do is rooted in our ... more secure world. Raytheon currently has an opening for a temporary System Administrator to perform onsite in our Annapolis Junction, Maryland office. The selected… more
    RTX Corporation (11/19/25)
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  • Sr Principal Linux Systems…

    Northrop Grumman (Boulder, CO)
    …environment + Experience with Certification & Accreditation process and STIGs + Active Top Secret is preferred We offer flexible work arrangements, phenomenal ... RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time **Description**...mission, we will support yours by expanding your personal network and developing skills, whether you are new to… more
    Northrop Grumman (01/07/26)
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  • Sr . Systems Administrator (Linux)

    Themis Insight (Fort Meade, MD)
    …Public and Private, Civilian and Military expertise to every case. We are hiring a Sr . Systems Administrator (Linux) to work in Fort Meade, MD. Position location ... is subject to change based on central MD client's needs. Required: TS /SCI with a Polygraph Provides support for implementation, troubleshooting and maintenance of… more
    Themis Insight (12/19/25)
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  • Mid- Senior Network Engineer

    Infinity Systems Engineering (Alexandria, VA)
    …come be more with us! Job Summary: We are seeking a skilled Systems Administrator / Network Engineer to join our mission-driven team. This position offers a broad ... scope of responsibilities, including network infrastructure management (switch deployment & configuration) and system... engineering, administration, or related IT roles. + Clearance: TS /SCI, CI Poly + Required Skills: + Experience with… more
    Infinity Systems Engineering (01/03/26)
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  • Sr . Principal Systems Administrator

    Northrop Grumman (Aurora, CO)
    …making history. Northrop Grumman Space Systems (NGSP) seeks to find a ** Sr . Principal Systems Administrator ** supporting the Integrated National Systems (INS) ... **Aurora, CO.** **Job Duties:** + Perform as a Linux and Windows System Administrator and able to build these environments from scratch. + Perform administration on… more
    Northrop Grumman (11/06/25)
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  • OCONUS Field Engineer - TS /SCI Polygraph…

    Leidos (Chantilly, VA)
    **Description** We are seeking mid to senior field engineers to join our international team in an exciting OCONUS location. The team is made-up of highly technical ... will have prior experience as either a systems engineer or systems administrator . Prior OCONUS experience and IP networking knowledge are desired. The program… more
    Leidos (11/07/25)
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