• Endpoint Security Engineer Lead…

    Leidos (Arlington, VA)
    **Description** Leidos has an immediate need for a lead Endpoint Security Engineer for a customer on a highly visible and strategic Cybersecurity Task Order. The ... Security Engineer will need to be a... Security Engineer will need to be a self-starter with excellent...and threat analysis. + Solid understanding of operating systems ( Windows , Linux, macOS). + Superior attention to detail with… more
    Leidos (11/25/25)
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  • Senior Information System Security

    General Dynamics Information Technology (Reston, VA)
    …for enterprise information systems and network architectures as an Information System Security Engineer at GDIT. Here, you'll tailor cutting-edge solutions to ... a wide range of devices. HOW AN INFORMATION SYSTEM SECURITY ENGINEER WILL MAKE AN IMPACT +...Required Experience: 8+ years of related experience + Advanced Windows administration capabilities and Linux proficiency + Practical experience… more
    General Dynamics Information Technology (11/21/25)
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  • Network Engineer

    Assertive Professionals (Chantilly, VA)
    …with Polygraph Timeline Pipeline Description Assertive Professionalsis seeking aNetwork Engineer with Po/ygraph supporting ourNational Security Customer in ... Network Engineer About the Organization Established in 2015,AssertiveProfessionals(AP), is...Department of Defense, Intelligence Community, and Department of Homeland Security in accomplishing their missions worldwide, through an employee… more
    Assertive Professionals (11/21/25)
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  • Software Engineer /Systems Administrator

    Cinteot (Springfield, VA)
    Software Engineer / Systems Administrator (location: Springfield, VA) The selected individual will be responsible to support the Framework Services / Platform and ... Security scrum team, performing operations / maintenance of program...troubleshoot, diagnose, and resolve problems with Microsoft Exchange, Microsoft Windows 2012 Server, and Active Directory and other … more
    Cinteot (11/06/25)
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  • Endpoint Security Engineer

    BOOZ, ALLEN & HAMILTON, INC. (Reston, VA)
    Endpoint Security Engineer Key Role: Design, deploy, manage, and operationalize enterprise endpoint data protection controls as a Trellix Endpoint Data Loss ... Prevention ( DLP ) Engineer . Serve as the technical owner for Trellix EDR...Build an enterprise-grade data protection program with visibility across security leadership, risk, and operational teams. Lead enterprise deployment,… more
    BOOZ, ALLEN & HAMILTON, INC. (12/30/25)
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  • Security Engineer

    Leidos (Lorton, VA)
    **Description** The Digital Modernization Sector at Leidos currently has an opening for a Security Engineer to work in our Lorton, VA office. This is an exciting ... to deliver cybersecurity and information assurance services. **Primary Responsibilities** The Security Engineer - Linux / Tenable Compliance is responsible for… more
    Leidos (12/11/25)
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  • Cyber Security Project Engineer

    The Metamorphosis Group (Mclean, VA)
    …Information Systems Security Professional (CISSP), Certified Information System Security Engineer Professional (ISSEP), Certified Information Security ... Cyber Security Project Engineer TS/SCI Clearance with...Information Systems Auditor (CISA) Optional Skills 1. Demonstrated experience and understanding of system administration for windows and Linux… more
    The Metamorphosis Group (12/10/25)
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  • Information System Security Engineer

    Amentum (Warrenton, VA)
    …space? If so, look no further. Amentum is seeking a Senior Information System Security Engineer (ISSE) to join our team of passionate individuals in Warrenton, ... The duties and responsibilities of the Senior Information System Security Engineer (ISSE) include, but are not...Auditor, Asset Baseline Monitor, and Virus Scan Enterprise) on Windows and Linux creating exceptions to allow essential processes… more
    Amentum (12/05/25)
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  • Senior Offensive Security Engineer

    CoStar Realty Information, Inc. (Arlington, VA)
    Senior Offensive Security Engineer Job Description **Offensive Security Engineer ** **Overview** CoStar Group (NASDAQ: CSGP) is a leading global provider ... an invaluable edge in real estate. Evolve our offensive security capabilities to test our internal and external facing...C2 Frameworks like Cobalt Strike, Sliver, and Mythic + Windows Active Directory exploitation tools and techniques + Knowledge… more
    CoStar Realty Information, Inc. (11/24/25)
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  • Senior Security Engineer

    CoStar Realty Information, Inc. (Arlington, VA)
    Senior Security Engineer Job Description **Overview** CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate ... As the security section grows, so will the tools and the **Senior Security Engineer ** will be the person charged with implementing them. The successful… more
    CoStar Realty Information, Inc. (10/24/25)
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