• Principal Systems Administrator

    ManTech (Arlington, VA)
    …computer systems, servers, and other IT infrastructure, ensuring optimal performance and security + Manage VIP user accounts, permissions, and security access ... Windows and Linux operating systems, network administration, virtualization, and security + Excellent problem-solving and troubleshooting skills to quickly identify… more
    ManTech (05/24/25)
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  • Senior Network Architect

    ManTech (Herndon, VA)
    …modeling, analysis, and planning. You might also design network and computer security measures as well as research and recommend network and data communications ... + 12+ years of relevant experience + 8570 Compliant certifications and CCNA certification + Hands-on experience with Cisco routing, switching, and firewall… more
    ManTech (05/23/25)
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  • Senior Computer and Information Systems Manager

    ManTech (Herndon, VA)
    …as an expert in the areas of network device interoperability, cyber security processes, and the protection of technical architecture. They lend thought leadership ... abreast of technical solutions, and provide necessary network and cyber security resources to accomplish required actions + Identifies functional and… more
    ManTech (05/23/25)
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  • Network Engineer

    Nightwing (Arlington, VA)
    …and policies. - Assess network topology and device configurations, identify critical security vulnerabilities, and recommend security best practices. - Provide ... and accessibility, establish and maintain backup protocols, and ensure system security . - Diagnose and resolve complex enterprise storage issues across local… more
    Nightwing (05/17/25)
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  • Senior Network Engineer

    ManTech (Chantilly, VA)
    …comprehensive network, VoIP, VTC, and data center solutions, adhering to security guidelines and customer specifications to ensure robust and secure communication ... routing, switching, VoIP, VTC, network encryption devices, and Cisco data center/ security to maintain network stability and performance. + Developing and maintaining… more
    ManTech (05/07/25)
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  • Systems Administrator, Senior

    BOOZ, ALLEN & HAMILTON, INC. (Arlington, VA)
    …clearance; willingness to take a polygraph exam + HS diploma or GED + Security + certification Nice If You Have: + Experience with tools, such as LogRhythm, JIRA ... government wide system design + Ability to work with Security Te chn ical Implementation Guides and group policies...Assurance, or Cyber + Certifications, such as CASP, CISSP, CCNA Clearance: Applicants selected will be subject to a… more
    BOOZ, ALLEN & HAMILTON, INC. (07/19/25)
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  • Piers Site Manager

    Leidos (Norfolk, VA)
    …and onboarding efforts in coordination with program hiring practices and security clearance requirements. + Handle personnel management functions including conflict ... and documentation policies and procedures in support of contractual and security requirements. + Support quality assurance and advanced troubleshooting efforts… more
    Leidos (07/15/25)
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  • Cloud Support Engineer - Nights

    ManTech (Vienna, VA)
    …or Azure Fundamentals (AZ-900) can substitute 0.5 years' experience + CompTIA Security +, ITIL Foundation, CompTIA Network+, or CompTIA A+ can substitute 1 year ... Solutions Architect Associate, Azure Administrator, Google Cloud Engineer, Cisco CCNA , CompTIA Linux+ Professional, Azure Solutions Architect (AZ-305), Google… more
    ManTech (07/12/25)
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  • Lab Manager 3

    ARSIEM (Arlington, VA)
    …environment. + Assesses network topology and device configurations, identifying critical security concerns and providing security best practice recommendations. ... acceptable performance and user accessibility, establishing back-ups, and monitoring systems security . + Troubleshoot and resolve complex storage problems across the… more
    ARSIEM (07/10/25)
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  • Lab Manager 2

    ARSIEM (Arlington, VA)
    …environment + Assesses network topology and device configurations, identifying critical security concerns and providing security best practice recommendations + ... acceptable performance and user accessibility, establishing back-ups, and monitoring system security + Troubleshoot and resolve complex storage problems across the… more
    ARSIEM (07/10/25)
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