• 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: ... Services (TCS) program is actively hiring a team of TS / SCI cleared Network Engineers to support an...cybersecurity posture in support of national security. For additional information and a list of current openings, please visit… more
    CACI International (11/10/25)
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  • Mission Systems Engineer

    SAIC (Chantilly, VA)
    **Description** SAIC is seeking a **Mission Systems Engineer ** with NRO experience to provide Modeling and Simulation (M&S) and Systems Engineering and ... and acquisitions that advance the NRO's space resiliency posture. The Mission Systems Engineer will work in a collaborative team environment supporting… more
    SAIC (11/06/25)
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  • Solution Train Engineer

    SAIC (Chantilly, VA)
    …or more experience. Relevant experience to be substituted in lieu of degree. + Active Top Secret / SCI clearance with Polygraph. + Proven experience with Agile ... **Description** SAIC is seeking a **Solution Train Engineer ** to support SAIC's Prime Program, Landmark AOS...Ground Enterprise Directorate (GED), responsible for the acquisition of systems over the complete end-to-end life cycle. As the… more
    SAIC (11/06/25)
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  • Senior Systems Engineer / Network…

    Jacobs (Chantilly, VA)
    Knack Workes, a Jacobs company, is seeking a highly skilled Senior Systems Engineer / Network Engineer with 10+ years of IT experience and proven expertise ... with emerging technologies and recommend solutions that align with organizational goals. * TS / SCI w/ CI Poly Clearance * Bachelor's degree in Computer Science,… more
    Jacobs (11/13/25)
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  • Mechanical Engineer

    Leidos (Chantilly, VA)
    …architectural, and structural teams to deliver integrated solutions. **Basic Qualifications** + **Current Top Secret SCI security clearance and the ability ... **Description** **Mechanical Engineer - Mission-Critical Facilities Design** Leidos is seeking a driven and detail-oriented Junior level Mechanical Engineer to… more
    Leidos (11/05/25)
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  • Cyber Operations Engineer

    BOOZ, ALLEN & HAMILTON, INC. (Alexandria, VA)
    …investigation and may need to meet eligibility requirements for access to classified information ; TS / SCI clearance is required. Compensation At Booz ... Cyber Operations Engineer The Opportunity: As a cyber mission spe...plans, and POA & M lifecycle management + Active TS / SCI clearance; willingness to take a polygraph… more
    BOOZ, ALLEN & HAMILTON, INC. (11/04/25)
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  • Facility Operations Center Engineer , ADC…

    Amazon (Herndon, VA)
    …requires that the candidate selected must currently possess and maintain an active TS / SCI security clearance with polygraph. The position further requires that, ... after start, the selected candidate obtain and maintain an active TS / SCI security clearance with polygraph or commensurate clearance for each government agency… more
    Amazon (10/23/25)
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  • Model Based Systems Engineer

    SAIC (Chantilly, VA)
    **Description** SAIC is seeking a cleared Model Based Systems Engineer with experience in Defense, Federal Civilian, and/or National Security systems to join ... (DNG, RQM, iRIS, etc.) is a bonus + Broad systems engineering experience (eg system architecture and...+ Must be a US Citizen with an active TS / SCI with a Polygraph. REQNUMBER: 2508711 SAIC… more
    SAIC (11/14/25)
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  • Electrical Engineer

    Leidos (Chantilly, VA)
    **Description** **Electrical Engineer ** **Location:** Chantilly VA **Clearance Required:** Current TS / SCI security clearance with the ability to pass a ... tools for design and documentation **Basic Qualifications** + Current TS / SCI security clearance with the ability to...EIT ( Engineer in Training) or PE (Professional Engineer ) certification + Experience with SCADA systems ,… more
    Leidos (10/28/25)
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  • SIGINT Enterprise Systems Engineer

    KBR (Chantilly, VA)
    Title: SIGINT Enterprise Systems Engineer Belong. Connect. Grow. with KBR! The candidate will focus on SIGINT mission trades, capability definition, CONOPS ... + Working Hours: Standard/Flexible Qualifications: Required: + Security Clearance Requirements: TS / SCI required and Polygraph eligible + Education: Requires 12… more
    KBR (09/30/25)
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