• Senior Systems Administrator (S)

    SimIS Inc. (Dahlgren, VA)
    …teams across multiple geographic locations + Experience managing Windows and Linux server environments + Knowledge of network security, firewalls, and intrusion ... of Navy tactical systems and combat information center operations + SECRET clearance Experience Desired: + Preferred: Master's degree or relevant certifications… more
    SimIS Inc. (09/22/25)
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  • Systems Administrator

    General Dynamics Information Technology (Fort Belvoir, VA)
    …of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job Family:** IT ... of directly related experience in systems administration and analysis. + UNIX/ LINUX System Administration - Preferred + Windows System Administration - Preferred… more
    General Dynamics Information Technology (09/02/25)
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  • Classified Lab Manager

    The MITRE Corporation (Mclean, VA)
    …with us. Department Summary: The team seeks a full-time Senior Systems Administrator to support the deployment, operation, and maintenance of IT systems in ... has prior experience working as a classified IT Systems Administrator . This is an on-premises position on our McLean...campus. Roles & Responsibilities: + Building and hardening Windows, Linux , Hypervisor systems, such as VMware + Patching and… more
    The MITRE Corporation (09/04/25)
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  • Sr Windows Server Technician

    Navy Exchange Services (NEX) (Virginia Beach, VA)
    …patches and performance tuning. Duties and Responsibilities: - Acts as senior administrator for legacy Linux , Windows, and ESX server operations. Responsible ... Incumbents of this position must be US Citizens. Job Summary: Senior administrator , responsible for installation, configuration, and support of all legacy Linux… more
    Navy Exchange Services (NEX) (09/26/25)
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  • Lab Manager /System Administration

    Node.Digital (Arlington, VA)
    Lab Manager/Systems Administrator Location: Arlington, VA Must have Secret Security Clearance Node is supporting a US Government customer to provide support for ... Technical Engagement Network (TEN) Lab Manager with experience in Linux Systems Administrator to support the design,...- US Citizenship - Must have an active DoD Secret clearance, TS/SCI clearance is preferred. - Must be… more
    Node.Digital (09/17/25)
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  • Embedded Machine Learning Engineer

    BOOZ, ALLEN & HAMILTON, INC. (Lorton, VA)
    …Learning Engineer The Opportunity: Your combination of people skills and system administrator expertise makes you the team hero, solving one problem after another. ... improve the technology supporting defense customers? We're looking for a system administrator to provide our customers insight into their network through monitoring… more
    BOOZ, ALLEN & HAMILTON, INC. (09/02/25)
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  • Lab Manager II

    ARSIEM (Arlington, VA)
    …looking for a Technical Engagement Network (TEN) Lab Manager with experience in Linux Systems Administrator to support the design, development, and deployment of ... + 2+ years of directly relevant experience as a Linux System Administrator . + 2+ years MacOS...Level II Clearance Requirement : Must have an active Secret clearance and be able to obtain a TS/SCI… more
    ARSIEM (09/16/25)
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  • Principal OR Sr. Principal Payloads Field Service…

    Northrop Grumman (Fairfax, VA)
    RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE TYPE: Secret TRAVEL: Yes, 25% of the Time **Description** At Northrop Grumman, our employees have ... 1 year of related engineering experience. + Competence in Linux , troubleshooting, engineering documents, tools, and equipment + Familiarity...meet its business needs. + **Must have a DoD Secret clearance that is in-scope or currently enrolled in… more
    Northrop Grumman (09/17/25)
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  • Enterprise Logging Solution (ELS) Lead

    TekSynap (Ashburn, VA)
    …+ Experience in an enterprise IT environment as an applications or systems administrator working in Windows and Linux environments + Experience with ... analyzing machine-generated big data is preferred. **REQUIRED QUALIFICATIONS** + Clearance requirement: Secret (Top Secret eligible) + Experience: Last 5 years… more
    TekSynap (09/02/25)
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  • Security Software Engineer - Red Team Penetra

    Imagine One Technology & Management (Dahlgren, VA)
    …be expected to: + Debug and reverse engineer software. + Analyze Windows Events and Linux syslog's, boot logs and dmesg logs. + Program and debug Web 2.0, Java, ... vulnerabilities. + Operate and administrate computer systems running HP-UX, UNIX, Solaris, Linux and Microsoft Windows. + Identify security flaws in compiled and… more
    Imagine One Technology & Management (09/24/25)
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