• Sr. Systems Engineer

    Leidos (Fort Belvoir, VA)
    …is seeking a **Sr. Systems Engineer** to support large-scale migration and operations on a large, high-profile DOD contract. The I3TS program provides ... Cloud Services + Knowledge of basic networking and network protocols (eg TCP/ IP , routing, firewalls, SSH, VPNs) + Hands-on experience with reviewing system logs… more
    Leidos (08/13/25)
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  • Principal Systems Administrator

    ManTech (Arlington, VA)
    …information + Collaborate with other IT staff and stakeholders to ensure smooth IT operations and address VIP user needs + Strong technical skills in areas such as ... Linux, macOS), servers, and networking + Experience with network protocols (TCP/ IP ), switch configurations, and firewalls is essential + Experience with scripting… more
    ManTech (08/08/25)
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  • Senior Security Engineer

    ManTech (Chantilly, VA)
    …implement, and sustain mission-driven network solutions that enable secure enterprise operations . You will provide technical leadership and hands-on expertise in ... + Strong knowledge of Windows and Linux systems, operating system security practices, TCP/ IP networking, 802.1x, and core network security principles + IAT Level II… more
    ManTech (08/08/25)
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  • Network Engineer (Expert)

    BAE Systems (Sterling, VA)
    …described below where specific skills may include the following + TCP/ IP transport network design and engineering, network routing protocols, advanced virtual ... networking technologies + Performing upgrades and performing routine network operations and maintenance (O&M). + Identifying and implementing INFOSEC and COMSEC… more
    BAE Systems (08/08/25)
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  • Network Engineer

    CACI International (Sterling, VA)
    …and software solutions to support enhancements and modernization efforts for ITI2.1 network operations + Contribute to Basis of Estimate (BOE) and Bill of Materials ... minimal supervision and possess excellent written and verbal communication skills + IP experience (to include sub-netting and routing), IPV4/IPV6 + BGP experience… more
    CACI International (08/08/25)
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  • Senior Security Engineer

    ManTech (Chantilly, VA)
    …implement, and sustain mission-driven network solutions that enable secure enterprise operations . You will provide technical leadership and hands-on expertise in ... . Strong knowledge of Windows and Linux systems, operating system security practices, TCP/ IP networking, 802.1x, and core network security principles . IAT Level II… more
    ManTech (08/08/25)
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  • Cyber Software Engineer

    Leidos (Arlington, VA)
    …mentor junior engineers, and contribute to knowledge transfer within cyber operations teams. + Lead efforts to develop the Software Development, Integration, ... C++ programming and strong proficiency in Rust. + Hands-on experience with TCP/ IP networking stack development and strong understanding of network protocols and… more
    Leidos (08/08/25)
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  • Integration Developer

    Steampunk (Mclean, VA)
    …+ Research integration issues and work closely with team members on operations and development staff. + Perform maintenance and troubleshooting of applications. + ... API security best practices including client ID enforcement, OAuth 2.0, JWT, IP Whitelisting, Rate limiting, and policies via Anypoint API Manager to protect… more
    Steampunk (08/08/25)
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  • Analytic Tradecraft Compliance Specialist

    BAE Systems (Reston, VA)
    …in a classified environment and will serve as technical expert for compliance in IP , Networking, Bluetooth, WIFI and Managed Attribution; in IOT, IOE, and Other Data ... Sets; in offensive and defensive Cyber Intelligence Operations ; in OSINT and Investigative Collection; in Geospatial OSINT analytic effort; in Mis-Dis Information… more
    BAE Systems (08/08/25)
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  • Senior Windows Systems Administrator

    SMX (Dahlgren, VA)
    …will work as part of our team to support the daily operations , monitoring and troubleshooting of Windows systems. The administrator will monitor Windows ... security tools such as firewalls + Proficient with network protocols including TCP/ IP + Vulnerability detection and remediation + IAT III certification such as… more
    SMX (08/08/25)
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