• 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, ... change. **Responsibilities:** The duties and responsibilities of the Senior Information System Security Engineer (ISSE) include, but are not limited to, the… more
    Amentum (12/05/25)
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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 ... section grows, so will the tools and the **Senior Security Engineer ** will be the person charged...response functions and reporting of findings + Review technical security posture ( network , application, database) for existing… more
    CoStar Realty Information, Inc. (10/24/25)
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  • Senior Network Tool Operations…

    Leidos (Chantilly, VA)
    …Digital Modernization Sector at Leidos has an opening for an a Senior Network Tool Operations Engineer to support the Intelligence Sector. **Required Tasks:** ... enforce network configuration policies to ensure compliance with internal security standards and external regulatory requirements (eg, NIST, PCI). + Stay… more
    Leidos (12/20/25)
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  • Senior Network Tool Engineer

    Leidos (Chantilly, VA)
    …Cisco Network Services Orchestrator (NSO) solutions and associated network infrastructure components, ensuring high availability, performance, and ... where you can thrive, keep reading!** **The Mission** Leidos is seeking a Senior Network Tool Engineer to support the Intelligence Sector. **The job duties are… more
    Leidos (12/20/25)
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  • Cyber Security Engineer IV

    SOS International LLC (Reston, VA)
    …of experience in cyber security or a related field. + Strong understanding of network security , endpoint security , cloud security , and application ... identity, and cloud workloads aligned with zero-trust principles. + Cloud Security : Engineer guardrails (policies, blueprints, landing zones), encryption,… more
    SOS International LLC (12/31/25)
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  • Senior Information System Security

    General Dynamics Information Technology (Reston, VA)
    …enterprise information systems and network architectures as an Information System Security Engineer at GDIT. Here, you'll tailor cutting-edge solutions to ... to protect data flows for a wide range of devices. HOW AN INFORMATION SYSTEM SECURITY ENGINEER WILL MAKE AN IMPACT + Provides technical expertise to ensure… more
    General Dynamics Information Technology (11/21/25)
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  • SME Zero Trust Security Engineer

    GovCIO (Alexandria, VA)
    **Overview** GovCIO is currently hiring a **Zero Trust Security Engineer ** to join our team, supporting a critical program with the US Coast Guard. This position ... be a hybrid remote position. **Responsibilities** The Zero Trust Security Engineer will be responsible for leading...of critical assets. + Conduct in-depth analysis of current network architectures, access controls, and security policies… more
    GovCIO (11/18/25)
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  • Exchange Engineer ( Network

    HII (Virginia Beach, VA)
    …administration, maintenance, and cybersecurity defense of all Navy Enterprise Tactical Training Network (NETTN) client and server infrastructure used to support ... Type: Full Time/Salaried/Exempt Anticipated Salary Range: $94,795.00 - $150,000.00 Security Clearance: Secret Level of Experience: Senior This opportunity resides… more
    HII (12/05/25)
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  • Lead Adversarial Security Engineer

    Trellix (Richmond, VA)
    **_Job Title:_** Lead Adversarial Security Engineer **About** **Trellix:** **Trellix, the trusted CISO ally, is redefining the future of cybersecurity and ... More at https://www.trellix.com/ . **_Role Overview:_** Trellix is seeking an Adversarial Security Engineer to lead the evolution of its cybersecurity posture.… more
    Trellix (11/21/25)
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  • Senior Principal Cyber Security

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **Senior Principal Cyber Security Engineer ** to join our team in **Chantilly, VA.** This role ... include but are not limited to:** + You will engineer , design, implement, integrate, and sustain Comply-to-Connect (C2C) deployment...system security practices, TCP/IP networking, 802.1x, and network security concepts + An active IAT… more
    ManTech (12/13/25)
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