• Senior Windows Engineer

    CACI International (Mclean, VA)
    …Windows Engineer will collaborate with various teams, including hardware, software , and quality assurance, to ensure the successful development and deployment of ... Senior Windows Engineer Job Category: Engineering Time Type: Full time...Time Type: Full time Minimum Clearance Required to Start: TS /SCI with Polygraph Employee Type: Regular Percentage of Travel… more
    CACI International (12/18/25)
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  • Sr Field Service Engineer

    Scientific Research Corporation (Norfolk, VA)
    …WILL REQUIRE US CITIZENSHIP AS WELL AS, A US GOVERNMENT SECURITY CLEARANCE AT THE SECRET LEVEL WITH TOP SECRET / SCI ELIGIBILITY Travel Requirements + ... re-testing Submarine Communication Systems and equipment to include hardware, cabling, and software + Providing support during Pre-Installation Test and Checkout… more
    Scientific Research Corporation (12/11/25)
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  • Mid-Level Systems Engineer

    Leidos (Chantilly, VA)
    …VA + Aurora, CO + St. Louis, MO + Tucson, AZ **Clearance Level Required:** Top Secret with SCI eligibility and able to obtain a Polygraph. **Primary ... 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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  • Associate Modeling and Simulation Engineer

    The MITRE Corporation (Mclean, VA)
    …or obtain, within one year from the date of hire, the following clearance(s): Top Secret Salary compensation range and midpoint: $86,000 - $107,500 - $129,000 ... looking for a for someone eager to apply their software development and computer science skills in a dynamic...experts, and human factors engineers to help demonstrate and test concepts for sponsors in an iterative rapid-prototyping environment.… more
    The MITRE Corporation (12/13/25)
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  • Associate Sensors Engineer

    The MITRE Corporation (Mclean, VA)
    …days a week on-site. Preferred Qualifications: + Ability to obtain and maintain a Top Secret /SCI clearance. + Experience in acoustic, radar, and sonar signal ... engineers starting Summer of 2026 to help design and test innovative undersea and maritime sensing solutions, turn complex...+ Ability to obtain and maintain at least a Secret security clearance which requires US citizenship. + BS… more
    The MITRE Corporation (01/01/26)
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  • Sr Specialist, Systems Engineer (Cloud…

    L3Harris (Chantilly, VA)
    …organizations here: https://www.l3harris.com/capabilities/space Essential Functions: We are seeking a software systems engineer to join our C2 development ... + Professional experience developing microservice architecture and its application in software systems Preferred Additional Skills: + Active TS /SCI security… more
    L3Harris (12/21/25)
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  • Network Engineer (Levels 2, 3)

    CACI International (Springfield, VA)
    Network Engineer (Levels 2, 3) Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS /SCI Employee Type: Regular ... Services (TCS) program is actively hiring a team of TS /SCI cleared Network Engineers to support an Intelligence Community...and performance of the network including hardware and management software . + Develop and maintain a road map for… more
    CACI International (11/10/25)
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  • DevOps Engineer , Sr.

    William C Brown Inc (Springfield, VA)
    DevOps Engineer , Sr. EOE Statement We are an equal employment opportunity employer. All qualified applicants will receive consideration for employment without regard ... by law. Description Deliver simple solutions to complex problems as a DevOps Engineer , Sr. Here, you'll tailor cutting-edge solutions to the unique requirements of… more
    William C Brown Inc (12/01/25)
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  • Project Engineer (Future Openings)

    In-Q-Tel, Inc. (Mclean, VA)
    …a collaborative mindset. + Candidates must meet eligibility requirements for a US top - secret clearance. To perform this job successfully, an individual must be ... deployment, maintenance, and support of a range of hardware and software technologies. These can include cloud infrastructure, AI/ML applications, geospatial… more
    In-Q-Tel, Inc. (10/07/25)
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  • Spacecraft Systems Engineer

    SAIC (Chantilly, VA)
    **Description** SAIC is seeking a **Spacecraft Systems Engineer ** . This position is located in **Chantilly, VA** and requires an **active TS /SCI clearance with ... a program office for a Major System Acquisition who requires a mid-career engineer with technical expertise in systems engineering who is anxious to grow their… more
    SAIC (11/06/25)
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