• Red River (Chantilly, VA)
    …reputation with existing clients. ? **This role will operate on the Tue-Sat ( 3 :45 PM - 12:15 AM) shift** **Primary Position Tasks:** + Must be flexible ... 1 years of IT experience with IT administration and support experience with windows administration and management of Active Directory, DHCP, DNS, Group policy + High… more
    DirectEmployers Association (10/21/25)
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  • Tyto Athene (Washington, DC)
    …**Incident Response Analyst** to support swing shift activities. We believe our Security Operations Center (SOC) analysts form the backbone of our cybersecurity ... guide them through more complex and high-priority incidents. **Responsibilities:** + Utilize security tools to analyze, investigate, and triage security alerts +… more
    DirectEmployers Association (10/28/25)
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  • Dentons US LLP (Washington, DC)
    …or upgrades to ensure smooth operations + Conduct regular system audits, security reviews, and data integrity checks to maintain the integrity and confidentiality ... end user issues and service desk tickets where Level 3 support is required + Participate in outage calls...SQL Mail, SSRS and triggers. + Working knowledge of Windows Server, IIS, DNS, DHCP, and Active Directory. +… more
    DirectEmployers Association (09/20/25)
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  • 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 (08/08/25)
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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 (10/29/25)
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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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  • Security Engineer, WWPS Solutions…

    Amazon (Herndon, VA)
    …We value broad and deep technical knowledge, specifically in the fields of Windows forensics, Cloud security , security operations, incident response, network ... and wide scale. * Evaluate the impact of current security threats, advisories, publications, and academic research ...of Window and Linux operating system (OS) environments, (eg Windows system, security , application event logs) -… more
    Amazon (10/15/25)
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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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  • 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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  • Spring 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 (10/01/25)
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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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  • 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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  • 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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  • Cyber Threat Hunt Analyst​

    Leidos (Ashburn, VA)
    **Description** The US Department of Homeland Security (DHS), Customs and Border Protection (CBP) Security Operations Center (SOC) is a US Government program ... threats to CBP networks through monitoring, intrusion detection and protective security services to CBP information systems including local area networks/wide area… more
    Leidos (11/01/25)
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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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  • Senior Identity Engineer

    SAIC (Washington, DC)
    …Hardware and/or software. + Install, configure, and troubleshoot server systems (ie, Windows , Linux, Appliances). + Performs security hardening, patching and ... identity, and access management. The candidate will provide support for Windows -based systems across the enterprise, including directory and identity management… more
    SAIC (10/28/25)
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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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  • Systems Administrator / Top Secret / Onsite:

    Lockheed Martin (Arlington, VA)
    …administrator for multiple program and internal R&D systems that support the research and development activities carried out by ACL's engineers and scientists\. ... devices, workstations, and application\-specific hardware\. ACL's systems generally include Windows , Linux, and VMware vSphere/ESXi machines running COTS, FOSS, and… more
    Lockheed Martin (10/22/25)
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