• Information System Security Engineer

    BOOZ, ALLEN & HAMILTON, INC. (Langley, VA)
    Information System Security Engineer The Opportunity: As a cyber professional, you know that understanding adversary tactics, techniques, and procedures is ... story to play a part in informing our national cyber defense DoD clients with in-depth expert analysis and...You'll aid in the design, engineering, and integration of security solutions into enterprise systems with a… more
    BOOZ, ALLEN & HAMILTON, INC. (01/16/26)
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  • Network Engineer - Top Secret Clearance |

    Cambridge International Systems Inc (Norfolk, VA)
    …tackling some of today's most complex and critical challenges in defense and security . We are currently seeking a Network Engineer to support operations ... issues during execution. + Administer network systems : apply patches, harden systems , review logs, and ensure physical/electronic security . + Support RMF… more
    Cambridge International Systems Inc (12/04/25)
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  • Senior Scientist, Systems Engineer

    L3Harris (Herndon, VA)
    …domains in the interest of national security . Job Title: Senior Scientist, Systems Engineer Job Code: 32407 Job Location: Herndon, Virginia Job Schedule: ... is available to qualified applicants Job Description: The Advanced Concept Engineer (ACE) provides strategic technical leadership to draw on L3Harris' technical… more
    L3Harris (12/24/25)
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  • Sr. Scientist - Systems Engineering…

    L3Harris (Ashburn, VA)
    …space, air, land, sea and cyber domains in the interest of national security . Job Title: Sr. Scientist - Systems Engineering Job Code: 31761 Job Location: ... to qualified applicants Job Description: The Sr. Scientist - Systems Engineering, Program Chief Engineer for the...Engineering (MBSE), and System Simulation * Thorough understanding of Cyber Security best practices * Competency making… more
    L3Harris (12/04/25)
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  • Tealeaf Security Engineer

    General Dynamics Information Technology (Falls Church, VA)
    …Description:** Seize your opportunity to make a personal impact as a **Tealeaf Security Engineer ** supporting the United States Postal Service. GDIT is your ... and grow a rewarding career. At GDIT, people are our differentiators. As a **Tealeaf Security Engineer ** , you will help ensure today is safe and tomorrow is… more
    General Dynamics Information Technology (12/17/25)
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  • Endpoint Security Engineer (Trellix…

    CACI International (Hampton, VA)
    Endpoint Security Engineer (Trellix Administrator) Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee ... and policies on Windows and Linux clients utilizing ePolicy Orchestrator. + Monitor security systems , analyze potential threats and vulnerabilities to client … more
    CACI International (01/13/26)
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  • Software Development Engineer III - Threat…

    Amazon (Arlington, VA)
    …threats, track adversary activities, and provide actionable intelligence across Amazon's security ecosystem. As a Software Development Engineer within ACTI ... decisions. - Architect and lead the design of highly scalable distributed systems processing petabytes of security data, making strategic trade-offs between… more
    Amazon (01/10/26)
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  • Cybersecurity Systems Engineer

    General Dynamics Information Technology (Fairfax, VA)
    …of related experience **US Citizenship Required:** Yes **Job Description:** As a GDIT Cybersecurity Systems Engineer , the work you'll do will be impactful to the ... to help our federal customers build and maintain Zero Trust architecture. As a Cybersecurity Systems Engineer , the work you'll do at GDIT will be impactful to… more
    General Dynamics Information Technology (01/20/26)
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  • Lead, Systems Engineer (Chief…

    L3Harris (Herndon, VA)
    …space, air, land, sea and cyber domains in the interest of national security . Job Title: Program Chief Engineer Job Code: 30473 Job Location: Herndon-VA ... our team in L3Harris Technologies, Herndon, VA location. Reporting to the Business Chief Engineer of Surface & Airborne Integrated Systems , Undersea Systems ,… more
    L3Harris (01/07/26)
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  • Sepio Security Engineer

    Leidos (Arlington, VA)
    …remediation and recommending mitigation strategies. + Monitoring & Incident Response: Monitor security systems for irregular behavior and participate in incident ... We are seeking a highly skilled and motivated Sepio Engineer to join our cybersecurity team. In this pivotal...you will be responsible for designing, implementing, and maintaining security measures, with a specific focus on leveraging the… more
    Leidos (11/25/25)
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