• System Security Engineer

    Guidehouse (Bethesda, MD)
    **Job Family** **:** IT Cyber Security **Travel Required** **:** Up to 25% **Clearance Required** **:** Ability to Obtain Public Trust **What You Will Do** **:** ... **4. Process Maturity** + Document and maintain the SA&A lifecycle workflow, integrating security into the system development lifecycle per NIST SP 800-37. + Guide… more
    Guidehouse (11/19/25)
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  • Lead System Security Engineer

    Guidehouse (Bethesda, MD)
    **Job Family** **:** Cyber Consulting **Travel Required** **:** Up to 25% **Clearance Required** **:** Ability to Obtain Public Trust **What You Will Do** **:** ... **4. Process Maturity** + Document and maintain the SA&A lifecycle workflow, integrating security into the system development lifecycle per NIST SP 800-37. + Guide… more
    Guidehouse (11/19/25)
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  • Lead Cybersecurity Engineer ; HP NonStop…

    Capital One (Annapolis, MD)
    …strategies and the latest technology trends. You will: + Provide best-in-class Security support and advanced technical consulting services for HP Non-Stop ... Lead Cybersecurity Engineer ; HP NonStop Systems In this key technical...Lead Cybersecurity role, you'll be responsible for the overall security architecture, design, and configuration of the PULSE HP… more
    Capital One (11/21/25)
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  • Sr. Security Research Engineer

    Proofpoint (Baltimore, MD)
    …has a direct and real-time impact protecting Proofpoint customers. As a Senior Security Research Engineer on Proofpoint's Threat Research team, you'll be part ... threats, safeguard their data, and make their users more resilient against cyber -attacks. Leading organizations of all sizes, including more than half of the… more
    Proofpoint (10/22/25)
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  • Software Engineer

    Nightwing (Annapolis Junction, MD)
    cyber , data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges. Our capabilities ... cyber , data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges. Our capabilities… more
    Nightwing (10/25/25)
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  • Senior Sales Engineer - SLED - MD/NJ/De

    Proofpoint (Maryland City, MD)
    …Account Manager, Security Engineer , Customer Success Manager, or Product Support , preferably in the cyber - security industry + Proven track record ... our sales process every single day. As a Sales Engineer working with accounts in the SLED space, you...Deliver compelling product demonstrations that address today's most pressing cyber threats + Work closely with customer/prospect security more
    Proofpoint (10/08/25)
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  • Software Engineer 3

    Nightwing (Annapolis Junction, MD)
    cyber , data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges. Our capabilities ... cyber , data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges. Our capabilities… more
    Nightwing (11/11/25)
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  • Modernization Systems Engineer - SE0

    Lockheed Martin (Hanover, MD)
    …the use of advanced electronics to undermine our way of life\. As a cyber security professional at Lockheed Martin, you'll protect the networks that our ... going to provide life\-cycle services to advance mission in support of Cybersecurity and SIGINT midpoint collection\. * You...whim of contract changes\. **What We're Doing:** Lockheed Martin, Cyber & Intelligence invites you to step up to… more
    Lockheed Martin (10/10/25)
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  • Sr. Software Engineer

    Huntington Ingalls Industries (Annapolis Junction, MD)
    … & Intelligence Team is looking for a Sr. Software Engineer to support Cyber Security Operations missions by designing and implementing prototype ... Number: 23393 Required Travel: 0 - 10% Employment Type: Full Time/Salaried/Exempt Security Clearance: TS/SCI with Poly Level of Experience: Mid This opportunity… more
    Huntington Ingalls Industries (11/21/25)
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  • Systems Security Engineer Intern…

    Sierra Nevada Company, LLC (Hagerstown, MD)
    …and rapid innovation. We provide leading edge technologies and transformative solutions that support our nation's most critical security needs. If you are ... provides affordable, turn-key command/control, communications, integrated ISR, force protection and security solutions worldwide. The MST team has a long legacy of… more
    Sierra Nevada Company, LLC (09/17/25)
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