• Windows Security Researcher

    ARSIEM (Annapolis Junction, MD)
    …to have an impact on every client you work with. ARSIEM is currently looking for a Windows Security Researcher 3 . The positions will support one of ... our Government clients in Annapolis Junction, MD. Responsibilities + Perform security research against Windows technologies. + Demonstrate the latest… more
    ARSIEM (11/07/25)
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  • Windows Vulnerability Researcher

    BOOZ, ALLEN & HAMILTON, INC. (Annapolis Junction, MD)
    …cyber effects missions. Perform advanced vulnerability research across Windows kernel, user-mode components, Hyper-V, and hardware-assisted security ... Windows Vulnerability Researcher Key Role: Deliver...accelerate vulnerability discovery and exploit implementation. Basic Qualifications: + 3 + years of experience in vulnerability research ,… more
    BOOZ, ALLEN & HAMILTON, INC. (11/22/25)
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  • Security Systems Tech Specialist 3

    M. C. Dean (District Of Columbia, DC)
    …of technical leaders in electrical, engineering, and cybersecurity industries. We are seeking a ** Security Systems Tech Specialist 3 ** to join our Security ... physical security and IT systems. As a ** Security Systems Tech Specialist 3 ** you will... posture across all systems implemented and managed. + Research , prototype, and develop emerging technologies by working closely… more
    M. C. Dean (11/01/25)
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  • Lead Security Systems Administrator

    Lumen (Herndon, VA)
    …expert in one (or more) of the following areas: Networking, Microsoft Windows Operating System, Security hardening + Self-starter with strong self-management ... and hardware updates or installation of customer required controls. Research and recommendations for old and new software and...as needed and be part of the overall company security team as well. Current TS/SCI clearance a must.… more
    Lumen (11/20/25)
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  • Systems Engineer 3 - Washington

    M. C. Dean (District Of Columbia, DC)
    …electrical, engineering, and cybersecurity industries. We are seeking an **Systems** **Engineer 3 ** to join our ** Security and Electronic Systems (SES)** ... With over 7,000 employees, our capabilities span electrical, electronic security , telecommunications, life safety, automation and controls, audiovisual, and IT… more
    M. C. Dean (08/27/25)
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  • Cyber Systems Engineer - level 3 or 4

    Northrop Grumman (Dulles, VA)
    …in a STEM field with 3 years of cyber systems experience _(excluding internships, research projects, etc)_ + PhD degree in a STEM field with 1 year of cyber ... Systems is seeking a _Cyber Systems Engineer - level 3 or 4 to_ join our team of qualified,...other Friday off. **Position Description** : A Cyber Systems Security Engineering position requires demonstrated technical accomplishments in securing… more
    Northrop Grumman (11/18/25)
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  • Information System Security Eng (ISSE) III

    Global Resource Solutions (Arlington, VA)
    …detail orientated, and talented individual for the position of Information System Security Engineer III. Job Description: Summary: The Information System Security ... Engineer (ISSE) III, is primarily responsible for conducting information system security engineering activities with a focus on lifecycle of current systems and… more
    Global Resource Solutions (09/26/25)
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  • Physical Security System Administrator 4

    M. C. Dean (Chantilly, VA)
    …our physical security infrastructure. You will also be involved in research and development (R&D) for new technologies, updates, and improvements to our ... With over 7,000 employees, our capabilities span electrical, electronic security , telecommunications, life safety, automation and controls, audiovisual, and IT… more
    M. C. Dean (10/23/25)
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  • Red Team Security Consultant, Mandiant,…

    Google (Reston, VA)
    Red Team Security Consultant, Mandiant, Google Cloud _corporate_fare_ Google _place_ Reston, VA, USA; Atlanta, GA, USA; +11 more; +10 more _laptop_windows_ Remote ... Cybersecurity, related technical field, or equivalent practical experience. + 3 years of experience with penetration testing and red...with tools used for wireless, web application, and network security testing. + Ability to travel up to 30%… more
    Google (11/18/25)
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  • Subject Matter Expert Satellite 3

    ARSIEM (Annapolis Junction, MD)
    …on every client you work with. ARSIEM seeks a Subject Matter Expert Satellite 3 . This position will support one of our government clients in Annapolis Junction, ... Act as subject matter expert for system architecture, enterprise security , adaptive systems, and cyber analytic techniques. + Devise...technical lead. + Five (5) years of experience with Windows and Linux Operating System experience. + Two (2)… more
    ARSIEM (10/14/25)
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  • Summer 2026 Liberty and National Security

    Brennan Center for Justice (Washington, DC)
    …is in-person at our Washington DC office. Responsibilities: The Liberty and National Security Program (LNS) interns typically conduct research on program issues, ... from ending mass incarceration to preserving Constitutional protections in national security policies. Part think-tank, part advocacy group, part cutting edge… more
    Brennan Center for Justice (11/06/25)
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  • Senior Offensive Security Engineer

    CoStar Realty Information, Inc. (Arlington, VA)
    Security ) + A track record of commitment to prior employers + 3 years of experience performing offensive security activities such as red teaming, ... Senior Offensive Security Engineer Job Description **Offensive Security ...penetration testing, and vulnerability research + 6 years of total experience in a… more
    CoStar Realty Information, Inc. (08/26/25)
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  • Security Operations Engineer

    The US Pharmacopeial Convention (USP) (Rockville, MD)
    …Computer Science, Information Security , or a related field with at least 3 years of experience** in information security operations, including at least three ... professional development, and leadership opportunities. Our partnerships, standards, and research reflect our belief that ensuring broad participation in scientific… more
    The US Pharmacopeial Convention (USP) (09/02/25)
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  • Network Engineer 3 - Washington

    M. C. Dean (District Of Columbia, DC)
    …in electrical, engineering, and cybersecurity industries. We are seeking a **Network Engineer 3 ** to join our ** Security and Electronic Systems (SES)** business ... With over 7,000 employees, our capabilities span electrical, electronic security , telecommunications, life safety, automation and controls, audiovisual, and IT… more
    M. C. Dean (08/27/25)
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  • Systems Administrator 3

    Nightwing (Annapolis Junction, MD)
    …cyber space operations, cyber defense and resiliency, vulnerability research , ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, ... involved in the resolution process. Configures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots, maintains… more
    Nightwing (09/22/25)
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  • Principal Systems Engineer - active TS/SCI…

    V2X (Suitland, MD)
    …Productivity and Global Information Assurance Certification (GIAC) GIAC Certified Windows Security Administrator (GCWN) certified. + Technical certifications ... battlefield. We bring 120 years of successful mission support to improve security , streamline logistics, and enhance readiness. Aligned around a shared purpose, our… more
    V2X (11/15/25)
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  • Systems Administrator / Top Secret / Onsite:

    Lockheed Martin (Arlington, VA)
    …of aerospace innovation, leveraging cutting edge computing environments to accelerate research and development\. As a hub for breakthrough ideas, ACL relies ... * Identify and apply industry best practices for systems administration across Windows , Linux, and VMware vSphere/ESXi environments\. * Develop and implement … more
    Lockheed Martin (10/22/25)
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  • Pr./System Admin - Shift Work (Top Secret) - Space…

    Northrop Grumman (Chantilly, VA)
    …part of history, they're making history. We have an opening for a **Tier 2/ 3 System Administrator** to join our team of qualified, diverse individuals in the ... and Standard Operating Procedures (SOPs). . Install, configure, troubleshoot, and maintain Windows and Linux VMs via OpenStack. . Provide accurate logs so that… more
    Northrop Grumman (11/15/25)
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  • Systems Engineer 4

    M. C. Dean (Vienna, VA)
    …With over 7,000 employees, our capabilities span electrical, electronic security , telecommunications, life safety, automation and controls, audiovisual, and IT ... cybersecurity industries. We are seeking a **System Engineer 4** to join our ** Security and Electronic Systems (SES)** business Unit. As part of **(SES)** Strategic… more
    M. C. Dean (10/14/25)
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  • Tier 1.5 Service Desk Technician

    ASM Research, An Accenture Federal Services Company (Springfield, VA)
    …and resolve Tier 1.5-level issues related to Azure services, Microsoft Windows , and collaboration tools (eg, Microsoft Teams, Outlook), escalating more complex ... using the provided knowledge articles. This activity includes issue research via the knowledge management system, documents all steps...in software development or scripting. + Minimum of three ( 3 ) years of experience in an IT support or… more
    ASM Research, An Accenture Federal Services Company (10/25/25)
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