• Aerospace Modeling and Simulation Engineer

    Leidos (Huntsville, AL)
    …active Secret Security Clearance and have the ability to obtain a Top Secret / SCI clearance with polygraph. **Preferred Qualifications** + Familiarity ... resilient business ethics. Leidos is seeking a talented aerospace modeling and simulation engineer within the Flight Systems Department. As part of the Leidos Threat… more
    Leidos (12/11/25)
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  • Senior Systems Engineer

    ManTech (Crane, IN)
    …Requirements:** + US Citizen and possess an active current Top - Secret clearance, with ability to obtain SCI eligibility **Physical Requirements:** ... **MANTECH** seeks a motivated, career and customer-oriented **Senior Systems Engineer (PNT)** to join our team in **Crane, IN.** This is a 100% on-site position.… more
    ManTech (12/11/25)
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  • Linux Systems Engineer

    SAIC (Arlington, VA)
    …dark web. Clearance/Citizenship Requirements: + US Citizenship with an active Top Secret Clearance with ability to obtain SCI (Active and/or PR within last ... **Description** Seeking a Senior Systems/Network Engineer , working with a diverse team of contractors,...engineering and integration; enterprise IT, including cloud services; cyber; software ; advanced analytics and simulation; and training. We are… more
    SAIC (12/06/25)
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  • Mid-Level Systems Engineer

    Leidos (Gaithersburg, MD)
    …Chantilly, VA + Aurora, CO + St. Louis, MO + Tucson, AZ **Clearance Level Required:** Top Secret with SCI eligibility and able to obtain a Polygraph. ... Leidos National Security Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations,… more
    Leidos (11/22/25)
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  • Senior Systems Engineer

    Leidos (Gaithersburg, MD)
    …Chantilly, VA + Aurora, CO + St. Louis, MO + Tucson, AZ **Clearance Level Required:** Top Secret with SCI eligibility and able to obtain a Polygraph. ... Leidos National Security Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations,… more
    Leidos (11/22/25)
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  • Test and Evaluation Engineer

    SAIC (Patuxent River, MD)
    …with NAVAIR Test & Engineering + Clearance level: An active Top Secret clearance is required. Also, must be SCI eligible **Desired Qualifications:** + ... **Description** SAIC is looking for a journeyman **Test and Evaluation** ** Engineer ** to support PMA-242 (Direct and Time Sensitive Strike Weapons Program… more
    SAIC (11/22/25)
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  • Insider Threat Program User Activity Monitor…

    Leidos (Washington, DC)
    …with EverFox or other similar User Activity Monitoring products and platform + Active Top Secret government clearance; ability to obtain DHS EOD SCI ... currently has an opening for User Activity Monitor (UAM) Engineer supporting the HEITS Contract as part of the...for the following: + Support the User Activity Monitor Software solution, executing all updates, changes, deployments, and other… more
    Leidos (11/09/25)
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  • Systems Engineer 1

    Amentum (Fort Meade, MD)
    …well within a team environment, be organized, and multi-task. **Clearance Required:** * Top Secret / SCI with polygraph **Minimum Education:** * Bachelor's ... so, look no further. Amentum is seeking a **Systems Engineer ** to join our team of passionate individuals in...and written communication skills * Experience in working with Software Development, Test Engineers, and System Administration teams to… more
    Amentum (11/01/25)
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  • CAD Modeling and Simulation Engineer

    SAIC (Chantilly, VA)
    …years of experience in modeling and simulation for aerospace or space systems. + Active Top Secret / SCI w/Poly Clearance. + Proficiency with CAD tools (eg, ... **Description** **SAIC** is seeking a **CAD Modeling and Simulation Engineer in Chantilly, VA** to support a government customer. **The successful candidate will:**… more
    SAIC (10/24/25)
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  • Modeling and Simulation Engineer

    SAIC (Chantilly, VA)
    …of experience in modeling and simulation for aerospace or space systems. + Active Top Secret / SCI w/Poly Clearance. + Strong understanding of sensor ... **Description** SAIC is seeking a Modeling and Simulation Engineer to support a customer in Chantilly, VA. The successful candidate will: + Develop and maintain… more
    SAIC (10/22/25)
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