• 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 of ... an invaluable edge in real estate. Evolve our offensive security capabilities to test our internal and external facing...position is located in Arlington, VA and is in office Monday through Thursday with work from home on… more
    CoStar Realty Information, Inc. (08/26/25)
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  • Contractor, Military & Homeland Security

    Amentum (Springfield, VA)
    …Processing Support Specialist III** support the National Geospatial-Intelligence Agency (NGA) and Office of Security (SIS) in Springfield, VA. **Duties May ... Appropriately and accurately maintain and update databases and files (eg, PeopleSoft security system of records, SISPI SharePoint Page, internal SISP file folders,… more
    Amentum (07/18/25)
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  • Case Management Security Specialist III

    Amentum (Springfield, VA)
    Security Specialist III** to support the National Geospatial-Intelligence Agency (NGA) and Office of Security (SIS) in Springfield, VA . Duties May Include: ... program. + Ensure case management team members provide timely security support to Personnel Security 's internal and...the SISP designated template and timeline to the Government Lead . + Monitor all case progress to ensure cases… more
    Amentum (07/18/25)
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  • Personnel Security Continuous Evaluation…

    SAIC (Springfield, VA)
    **Description** SAIC is seeking an experienced Personnel Security Officer to support our customer's Office of Security . This position will be responsible for ... to achieve required timelines + General understanding/application of the Personnel Security discipline **Desired** + Efficient in office software applications… more
    SAIC (10/07/25)
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  • Cyber Security Specialist 4

    M. C. Dean (Springfield, VA)
    …With over 7,000 employees, our capabilities span electrical, electronic security , telecommunications, life safety, automation and controls, audiovisual, and IT ... engineering, and cybersecurity industries. We are seeking an **Cyber Security Specialist 4** to join our ** Security ...of agility, expertise, and trust. + An opportunity to lead and build a business with the support of… more
    M. C. Dean (10/10/25)
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  • Information Systems Security Engineer…

    Watershed Security (Norfolk, VA)
    JOB DESCRIPTION Watershed Security , is a Veteran Owned Small Business with over 20 years' Cybersecurity and Government Contracting experiencing. Watershed is looking ... for a Journeyman Information Systems Security Engineer (ISSE) to support the Naval Surface Warfare Center (NSWC) in Philadelphia, PA. The successful candidates will… more
    Watershed Security (10/02/25)
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  • Security Engineer, AWS Cross Domain…

    Amazon (Arlington, VA)
    Description AWS is seeking a Cross Domain Services Security Engineer to support our government customers in the Intelligence, Defense, and National Security ... selected must currently possess and maintain an active TS/SCI security clearance with polygraph. The position further requires the...thought leader in the wider community. - Play a lead role in educating, sharing best practices, presenting at… more
    Amazon (09/27/25)
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  • Senior Cyber Security Engineer

    ManTech (Reston, VA)
    MANTECH seeks a motivated, career and customer-oriented **Senior Cyber** ** Security Engineer** to join our team **onsite** in **Herndon, VA or Reston, VA** to ... customer's accreditation process for ATO + Work closely with Security Engineers to ensure security solutions are...position, including 4+ years of consulting experience + Team lead or management experience + Expert in System Accreditation… more
    ManTech (08/20/25)
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  • National Security Portfolio Manager

    Allied Universal (Arlington, VA)
    **Company Overview:** Allied Universal(R), North America's leading security and facility services company, offers rewarding careers that provide you a sense of ... Portfolio Manager (EAPM) builds strong relationships with a clients' corporate security executives and leadership across multiple states, while collaborating with… more
    Allied Universal (09/27/25)
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  • Case Management Security Specialist II

    Amentum (Springfield, VA)
    Security Specialist II** to support the National Geospatial-Intelligence Agency (NGA) and Office of Security (SIS) in Springfield, VA. **Duties May Include:** ... initiatives. + Provide agency level technical expertise concerning the personnel security disciplines and standard operating procedures in support of case management… more
    Amentum (07/18/25)
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