• Senior Information Systems Security Officer

    Steampunk (Mclean, VA)
    …assessment, and analysis + Specialized knowledge and experience with the operating system ( Windows and/or Linux) and network (ie, Local Area Networks [LAN] and Wide ... new thinking to clients in the Homeland, Federal Civilian, Health and DoD sectors. Through our **Human-Centered delivery methodology** , we are fundamentally… more
    Steampunk (12/13/25)
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  • Senior Cyber Security Engineer

    ManTech (Chantilly, VA)
    …network management systems, and virtualized systems. + Strong understanding of Windows and Linux systems, operating system security principles, TCP/IP networking, ... vendor-agnostic services and open-source security solutions, with proficiency in DoD integration, engineering, and sustainment practices. + Familiarity with Cisco… more
    ManTech (12/13/25)
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  • Senior Principal Cyber Security Engineer

    ManTech (Chantilly, VA)
    …solutions, network management systems, and virtual systems + Knowledge of Windows and Linux systems, general operating system security practices, TCP/IP networking, ... expertise, including vendor-agnostic services, open-source trends, and proficiency in DoD integration, engineering, and sustainment processes + Experience with Cisco… more
    ManTech (12/13/25)
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  • Security Engineer

    Leidos (Lorton, VA)
    …systems in an enterprise environment. + Active TS/CI government security clearance + Direct experience with Tenable.sc and/or Nessus for vulnerability management ... (eg, FISMA, FedRAMP, PCI-DSS, HIPAA, SOX). + Familiarity with Windows server hardening and cross-platform vulnerability management. + Experience integrating… more
    Leidos (12/11/25)
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  • Architecture Network Engineer

    Leidos (Chantilly, VA)
    …scenarios to support the production enterprise network. + Schedule maintenance windows for migrating user connections from legacy to the modern infrastructure ... (MPLS) Wide Area Networks (WANs). **Basic Requirements** + Required Clearance to be considered: TS/SCI with Polygraph + Candidate...diploma and 10 years. + Must be compliant with DoD 8140 Information Assurance Technical (IAT) Level 2. +… more
    Leidos (12/09/25)
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  • Senior IT Systems Administrator

    ManTech (Chantilly, VA)
    …degree and 10 years of relevant experience in Information Technology. + Current DoD 8570 IAT II certification (Security+, SSCP, or equivalent) or ability to obtain ... one within 180 days. + Experience with Windows and Linux operating systems. + Experience providing help-desk end-user support for common desktop and server issues. +… more
    ManTech (12/03/25)
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  • Liaison Analyst (USMC LNO) - Joint National…

    Green Cell Consulting (Suffolk, VA)
    …Experienced expert in areas such as: + Joint Staff Officer Functions + DoD Planning, Programming, and Budget Execution + Collective Training + Opposing Forces ... prioritization skills + Proficient in computer applications such as Windows and MS Office + Expected to perform independently...Information + Ability to obtain or have a security clearance + Requires CONUS and OCONUS travel + Daily… more
    Green Cell Consulting (11/28/25)
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  • ICS: Afhe Maintenance Technician

    KBR (Portsmouth, VA)
    …offering an unparalleled opportunity to drive transformative change within the realm of DoD Fuel Management Systems. Join us on this journey toward greater impact ... 70e & mechanical aptitudes (pneumatics, hydraulics) + Computer and Microsoft Windows proficiency. Preferred Qualifications + Preference for current possession of a… more
    KBR (11/27/25)
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  • System Administrator

    Gromelski & Associates, Inc. (Manassas, VA)
    …US citizen with no dual citizenship and able to obtain and keep a DoD Secret level security clearance **_Job:_** Full-Time Employee, 40 hours/week **Benefits:** ... and domain servers. Background working in a Linux and Microsoft Windows environment. Maintains smooth operation of multi-user computer systems, including… more
    Gromelski & Associates, Inc. (11/21/25)
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  • IT Systems Administrator

    ManTech (Chantilly, VA)
    …degree with seven years of experience may be substituted. + Certification: Current DoD 8570 IAT II certification (eg, Security+, SSCP) or the ability to obtain ... one within 180 days. + System Experience: Experience with both Windows and Linux operating systems. + End-User Support: Experience providing help-desk support for… more
    ManTech (11/19/25)
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