• Mid-Senior Network Engineer

    Infinity Systems Engineering (Alexandria, VA)
    …experience in Juniper switch configuration (Cisco experience is a plus) + Proficient in Linux and Windows system administration + Active CompTIA Security+ CE ... with us! Job Summary: We are seeking a skilled Systems Administrator /Network Engineer to join our mission-driven...secure, and troubleshoot Juniper and Cisco switches. + Perform systems administration on Windows and Linux… more
    Infinity Systems Engineering (09/30/25)
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  • Lab Manager II

    ARSIEM (Arlington, VA)
    …is looking for a Technical Engagement Network (TEN) Lab Manager with experience in Linux Systems Administrator to support the design, development, and ... configuration management and deployment across Windows , MacOS, Linux /Unix, and other operating systems and virtual...+ 2+ years of directly relevant experience as a Linux System Administrator . + 2+… more
    ARSIEM (09/16/25)
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  • Network Systems Engineer - TS/SCI w/Poly

    Parsons Corporation (Mclean, VA)
    …engineering, with a strong background in Cisco routing and switching, as well as system administration ( Windows , Linux , or similar). + Hands-on experience ... Support the configuration, management, and troubleshooting of encryptors, secure communication systems , and system -level security protocols. + Perform network… more
    Parsons Corporation (09/09/25)
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  • Cyber Security Engineer

    BAE Systems (Herndon, VA)
    …experience. + Strong knowledge of Windows and Linux operating systems + Familiarity with system hardening, patch management, and configuration management ... premise, and via remote Cloud services. As a mission-focused administrator that solves problems on the program, you will...Platforms: + Security Tools: Splunk, Rapid 7 + Operating Systems : Windows Server, RHEL/CentOS, Ubuntu + Compliance… more
    BAE Systems (09/09/25)
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  • Security Software Engineer - Red Team Penetra

    Imagine One Technology & Management (Dahlgren, VA)
    …+ Operate and administrate computer systems running HP-UX, UNIX, Solaris, Linux and Microsoft Windows . + Identify security flaws in compiled and ... to: + Debug and reverse engineer software. + Analyze Windows Events and Linux syslog's, boot logs...improving software and code design. + Contribute to a System Security Administrator and Operators Manual (SSAOM).… more
    Imagine One Technology & Management (09/24/25)
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  • IT Specialist

    BOOZ, ALLEN & HAMILTON, INC. (Mclean, VA)
    …and managing Unix, Linux , and Windows operating systems , including installing or loading operating system software, troubleshooting, maintaining ... IT Specialist The Opportunity: Your combination of people skills and system administrator expertise makes you the team hero, solving one problem after another.… more
    BOOZ, ALLEN & HAMILTON, INC. (09/01/25)
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  • Platform/Infrastructure Engineer

    Nightwing (Sterling, VA)
    … Linux Certifications: Linux Professional Institute (LPI), Certified Linux System Administrator (CLSA). + Infrastructure-as-Code Certifications: ... Tier 2/3 escalation. Required Skills: + Operating Systems : Strong understanding of Linux and/or Windows Server operating systems . + Networking: Knowledge… more
    Nightwing (09/26/25)
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  • Systems Engineer

    Parsons Corporation (Centreville, VA)
    …of experience. Experience may be substituted in lieu of degree. + VMWare Administration + Linux and Windows OS Administration + Active Directory / LDAP / DNS ... **Job Description:** Parsons is looking for an amazingly talented Systems Engineer to join our team! In this role...+ Atlassian Suite of Applications + Microsoft Products (Server Administrator , Azure) + Must be able to work in… more
    Parsons Corporation (09/04/25)
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  • Enterprise Engineering Lead

    Leidos (Fort Belvoir, VA)
    … system , support end users through help desk ticketing systems , and coordinate the application of fixes/patches throughout all environments ... VMWare Certified Solutions Architect, Cisco Certified Network Professional, Microsoft Certified Windows Server Hybrid Administrator or Identify and Access … more
    Leidos (09/19/25)
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  • Security Control Assessor (SCA) (TS/SCI)

    Tau Six (Chantilly, VA)
    …risk and defending the enterprise. Candidates must possess thorough understanding of Windows & Linux operating systems , cloud technology, contemporary ... Guides. + Operating System /Computing Environment certificate for Windows Server 2012 or newer UNIX ( Linux ...with assessing security relevant applications. + Experience as a System Administrator , Information System Security… more
    Tau Six (07/23/25)
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