• Lead Security Engineer

    CoStar Realty Information, Inc. (Arlington, VA)
    Lead 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 ** Lead Security Engineer ** will be...Proficiency with PC software applications, E-Mail, and job associated applications/ systems to expediently process work + Requires good organization… more
    CoStar Realty Information, Inc. (10/24/25)
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  • Lead Security Engineer

    Foxhole Technology, Inc (Alexandria, VA)
    **Overview** **Job Title: Lead Security Engineer ** **Clearance: Top Secret w/SCI eligibility** **Location: Alexandria, VA** **Start: Based on Contract ... around the world **.** We are seeking a mission-focused Lead Security Engineer to support...detection, recovery, or reporting activities. + Familiarity with performing security assessments for all IT systems , to… more
    Foxhole Technology, Inc (12/19/25)
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  • Lead Information Security

    Lumen (Herndon, VA)
    …DoD customers on worldwide DDoS threats and issue posture and assessment reports This Lead Information Security Engineer position operates in a supportive ... event management functions - monitoring, detection, triage of security events and alerts in associated monitoring systems...change requests for the Lumen managed DDoS product. The Lead Information Security Engineer is… more
    Lumen (12/10/25)
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  • Endpoint Security Engineer

    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. ... systems are functional, secure, and scalable. The Security Engineer will support the design and...ensure full coverage across all endpoints. + Incident Response: Lead and participate in the investigation and response to… more
    Leidos (11/25/25)
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  • Network Security Engineer

    Chenega Corporation (Fort Belvoir, VA)
    Network Security Engineer Lead Ft. Belvoir, VA Join our Talent Network Network Security Engineer Lead Ft. Belvoir, VA C-CHR-24-042 TheNetwork ... Security Engineer Leadwill perform a variety of broad network engineering...Area Network (ICAN). + Install new modified hardware, operating systems , and software applications ensuring integration with Information Assurance… more
    Chenega Corporation (12/01/25)
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  • Lead Security Engineer

    Leidos (Reston, VA)
    … into every phase of the System Development Life Cycle (SDLC). As the **Senior Security Engineer ** , you will define the security posture, lead ... systems (KMS) as required. + **DevSecOps Integration:** Lead the integration of security tools and...Lead efforts to develop, maintain, and oversee all system security documentation, including System more
    Leidos (12/20/25)
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  • Lead System Security

    Guidehouse (Bethesda, MD)
    …**4. Process Maturity** + Document and maintain the SA&A lifecycle workflow, integrating security into the system development lifecycle per NIST SP 800-37. + ... develop a matrix of cybersecurity responsibilities for each FISMA system . **6. Review** + Conduct security control...functional tests. + 3+ years of experience as IT system administrator or engineer . Experience can include:… more
    Guidehouse (11/19/25)
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  • NLCC Cybersecurity Engineer , Lead

    The MITRE Corporation (Fort Meade, MD)
    …make a difference with us. Join MITRE's "DoDIN Enterprise Foundations" engineering team as a Lead Cyber Security Engineer and play a direct role in ... and/or participating in technical and operational assessments of the cyber security of these systems /services. + Collaborate with mission stakeholders,… more
    The MITRE Corporation (01/01/26)
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  • Lead , Information Security

    L3Harris (Ashburn, VA)
    …and cyber domains in the interest of national security . Job Title: Anti-Tamper System Security Engineer (Secret Security Clearance) Job Code: 30715 ... activities. + Use DoD 5200.39 for the identification and protection of CPI. + Engineer trustworthy and secure systems in accordance with NIST 800-160. + Develop… more
    L3Harris (11/01/25)
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  • Lead Security Assessor

    Foxhole Technology, Inc (Alexandria, VA)
    **Overview** **Job Title: Lead Security Engineer -...Server O/S, Network (CISCO) Router and Switch, Host Based Security System (HBSS) / End Point ... around the world **.** We are seeking a mission-focused Lead Security Engineer to support...War (DoW) cybersecurity program. In this role, you will lead a team providing system assessments and… more
    Foxhole Technology, Inc (12/19/25)
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