• Facility Operations Center Technical Team Lead,…

    Amazon (Arlington, VA)
    …that the candidate selected be a US citizen and currently possess and maintain an active Top Secret security clearance with SCI eligibility. The position ... after start, the selected candidate obtain and maintain an active TS /SCI security clearance with polygraph or...Current, active US Government Security Clearance of Top Secret with SCI eligibility or above… more
    Amazon (01/05/26)
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  • Nuclear Engineer , Senior

    BOOZ, ALLEN & HAMILTON, INC. (Reston, VA)
    …seismic or earthquake, physics, computational science, or fission reactor engineering + Active TS /SCI clearance; willingness to take a polygraph exam + ... Nuclear Engineer , Senior Key Role: Provide nuclear weapons effects...managers. Basic Qualifications: + 8+ years of experience with systems engineering approaches to nuclear weapons effects or development… more
    BOOZ, ALLEN & HAMILTON, INC. (12/20/25)
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  • Site Reliability Engineer - CTJ - Poly

    Microsoft Corporation (Reston, VA)
    …to the following specialized security screenings: + The successful candidate must have an ** active ** US Government ** Top Secret Clearance** with access to ... problems at scale and is passionate about building resilient systems that matter. As a Principal Site Reliability ...systems that matter. As a Principal Site Reliability Engineer on the Silver Edge team, you will provide… more
    Microsoft Corporation (01/06/26)
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  • Project Engineer - Acquisitions (All…

    Noblis (Chantilly, VA)
    …and other DoD/IC customers Required Qualifications + US Citizenship is required + Active Top Secret /SCI clearance with a Counter-Intelligence Polygraph + ... Responsibilities Noblis ESI is seeking a **Project** ** Engineer - Acquisition** with a national space enterprise...- Acquisition** with a national space enterprise and ground systems acquisition background to work with our clients in… more
    Noblis (11/27/25)
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  • Senior SIGINT Systems Engineer…

    KBR (Chantilly, VA)
    Title: Senior SIGINT Systems Engineer - Acquisition KBR is seeking a Senior SIGINT Systems Engineer to be part of our team supporting our customer in ... information distributed to US Government Intelligence Community and Military users. The SIGINT Systems Engineer serves as an advisor to support the Government in… more
    KBR (12/09/25)
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  • Senior Engineer

    Applied Research Associates, Inc. (Alexandria, VA)
    …from an accredited institution + 10+ years of relevant experience + Current DoW TOP SECRET clearance with SCI eligibility + Experience with one or more ... Applied Research Associates, Inc. (ARA) is seeking to contingently hire a **Senior Engineer ** for ARA's effort supporting the Assistant Secretary of War for Critical… more
    Applied Research Associates, Inc. (11/26/25)
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  • Modeling & Simulation Engineer (Specialist)

    KBR (Reston, VA)
    …case-by-case basis + Proficiency in C++, Python, or other programming language + Active Top - Secret clearance with Sensitive Compartmented Information (SCI) ... Title: Modeling & Simulation Engineer (Specialist) Belong. Connect. Grow. with KBR! KBR's...contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future… more
    KBR (10/24/25)
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  • Sr. System Development Engineer , AWS Cross…

    Amazon (Herndon, VA)
    …that has the entrepreneurial feel of a start-up. This is an opportunity to operate and engineer systems on a massive scale and to gain top -notch experience ... The AWS Cross Domain Services team is seeking a Systems Development Engineer who is passionate about...US Citizen and must currently possess and maintain an active TS /SCI security clearance with polygraph. The… more
    Amazon (01/14/26)
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  • DevOps Engineer , Sr.

    William C Brown Inc (Springfield, VA)
    …center infrastructure * Experience using Jira and Confluence on a daily basis * Active TS /SCI clearance required and eligibility to obtain a poly Desired * ... Required Location Springfield Full-Time/Part-Time Full-Time Exempt/Non-Exempt Exempt Security Clearance Requirements Active TS / SCI Clearance and eligibility to… more
    William C Brown Inc (12/01/25)
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  • Systems Engineer - Research…

    KBR (Chantilly, VA)
    Title: Systems Engineer - Research and Development - Senior Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering ... future of space defense. KBR is seeking a Senior Systems Engineer to support our customers in...CONUS and OCONUS travel may be required. Security Requirements: Active TS -SCI w Polygraph Belong, Connect and… more
    KBR (10/29/25)
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