• Physical Security Engineer 4

    M. C. Dean (Chantilly, VA)
    …engineering, and cybersecurity industries. We are seeking a **Physical Security Engineer 4** to join our **Security and Electronic Systems (SES)** business ... systems for both ongoing and upcoming projects. As a hands-on, working-level engineer , you will be directly involved in the engineering and field installation… more
    M. C. Dean (10/23/25)
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  • Mechanical Engineer

    Leidos (Springfield, VA)
    …Solutions (MDS) division are seeking a highly motivated **Junior Mechanical Engineer ** to support the planning, design, and analysis of mechanical systems-primarily ... This role offers the opportunity to work under the mentorship of senior engineers and contribute to system layout, equipment selection, energy modeling, and… more
    Leidos (01/10/26)
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  • Principal Network Engineer

    Leidos (Mclean, VA)
    …**Leidos** has a new and exciting opportunity for a **Principal Network Engineer ** in our **National Security Sector's (NSS) Cyber & Analytics Business Area ... forefront in Security Engineering, Computer Network Operations (CNO), Mission Software , Analytical Methods and Modeling, Signals Intelligence (SIGINT), and… more
    Leidos (01/09/26)
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  • Security Policy Engineer

    SAIC (Springfield, VA)
    **Description** SAIC is looking for a qualified Security Engineer (ISSO) to join an exciting program in Springfield, Virginia. Individual will be responsible for ... capabilities working with system operations. + Interact professionally with senior -level executives and work on a team or independently,...Active TS/SCI is required. + Ability to obtain a polygraph . + Bachelor's degree with 9+ years experience in… more
    SAIC (12/18/25)
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  • ForeScout Engineer - Active TS/SCI with CI…

    ENS Solutions (Norfolk, VA)
    …to solve complex security challenges. You will lead a team as they engineer solutions to complex challenges for customers using knowledge network engineering, Active ... complexities of security with a wide variety of audiences, including senior management. + Manage infrastructure and cybersecurity controls, including enhanced… more
    ENS Solutions (12/06/25)
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  • Enterprise Integration Systems Engineer

    SAIC (Chantilly, VA)
    …their responsibilities. SAIC has an opening for a Enterprise Integration Systems Engineer to provide Systems Engineering and Technical Assistance (SETA) services to ... at least 9 years of relevant experience + Active TS/SCI clearance with polygraph + Strong technical fundamentals in IC space collectors, command and control, mission… more
    SAIC (11/12/25)
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  • Network Testing Lab Infrastructure Engineer

    CACI International (Sterling, VA)
    Network Testing Lab Infrastructure Engineer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph ... + Execute test plans and procedures as directed by senior lab engineers. + Assist in the implementation of...equipment inventory. + Support the installation and updates of software and firmware on lab devices. + Assist in… more
    CACI International (10/24/25)
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  • Senior Delivery Consultant, WWPS ProServe

    Amazon (Herndon, VA)
    …Python) - Current, active US Government Security Clearance of TS/SCI with Polygraph Preferred Qualifications - Full Stack software development experience (eg, ... must currently possess and maintain an active TS/SCI security clearance with polygraph . Key job responsibilities As an experienced technology professional, you will… more
    Amazon (01/09/26)
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  • Senior Frontend Developer

    CACI International (Chantilly, VA)
    …Required: None Type of Travel: None * * * **The Opportunity:** CACI is seeking a senior lead frontend software engineer to join the PGMM team-a program ... Senior Frontend Developer Job Category: Engineering Time Type:...product development sprints. * Partner with engineering, security, and software teams to align operations with mission outcomes. *… more
    CACI International (12/03/25)
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  • Senior Delivery Consultant - Application…

    Amazon (Arlington, VA)
    …must currently possess and maintain an active TS/SCI Security Clearance with Polygraph . The position further requires the candidate to opt into a commensurate ... implementation - Current, active US Government Security Clearance of TS/SCI with Polygraph Preferred Qualifications - AWS experience preferred, with proficiency in a… more
    Amazon (12/03/25)
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