• Fidelis Administrator - Active TS/SCI with CI Poly

    ENS Solutions (Norfolk, VA)
    … support to developmental and operational systems including day-to-day operations , monitoring, and problem resolution for all client/server/storage/ network ... Identity, Credential and Access Management (ICAM), Software Development, Cyber and Network Security, System Engineering, Program/Project Management, IT support ,… more
    ENS Solutions (09/27/25)
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  • Sr Windows Server Technician

    Navy Exchange Services (NEX) (Virginia Beach, VA)
    …tuning, backup/recovery, configuration, documentation). -Networking protocols for Windows Server administration and support (TCP/IP, WINS, DNS, DHCP) -Windows ... US Citizens. Job Summary: Senior administrator, responsible for installation, configuration, and support of all legacy Linux, Windows, and ESX servers within a large… more
    Navy Exchange Services (NEX) (09/26/25)
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  • Cisco Identity Services Engineer Administrator

    UIC Government Services and the Bowhead Family of Companies (Dahlgren, VA)
    …well as posture and client provisioning. + Configure and implement TACACS+ policies for network device administration . + Manage firewall and network security ... matter expert in coordinating and troubleshooting with customers, other infrastructure support activities and business units + Develop network documentation… more
    UIC Government Services and the Bowhead Family of Companies (09/28/25)
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  • Information Systems Security Engineer

    KBR (Arlington, VA)
    …in overlapping domains at multiple classifications, including vulnerability analysis, SIEM operations , cyber network defense, cyber operations , malware ... Projects: KBR's work is at the forefront of engineering, logistics, operations , science, program management, mission IT and cybersecurity solutions. + Collaborative… more
    KBR (09/13/25)
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  • Linux System Administrator-Senior Level

    Nightwing (Sterling, VA)
    Nightwing provides technically advanced full-spectrum cyber, data operations , systems integration and intelligence mission support services to meet our ... support a very dynamic program in a world-class operations facility and must have a broad range of...+ 5+ years of experience in IT, cybersecurity, and/or network /systems administration + Proficiency experience with Red… more
    Nightwing (09/26/25)
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  • Site Reliability Engineer II - CTJ - Top Secret

    Microsoft Corporation (Reston, VA)
    …or related field AND 1+ year(s) technical experience in software engineering, network engineering, or systems administration OR Bachelor's Degree in Computer ... or related field AND 2+ years technical experience in software engineering, network engineering, or systems administration OR equivalent experience. **Other… more
    Microsoft Corporation (09/05/25)
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  • Senior Systems Engineer

    Leidos (Chantilly, VA)
    … troubleshooting, including VLANs, routing, NAT, firewall rules, DNS, and DHCP. + Support VPN tunnels and internal network segmentation strategies. + Implement ... of a driven team of experts tackling some of the most complex challenges in support of our national security mission. **What You'll Do:** Step into a hybrid role… more
    Leidos (08/15/25)
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  • Senior Systems Architect

    ManTech (Herndon, VA)
    …networks. Designs and develops solutions to complex networking problems, system administration issues, or network concerns. Performs systems management and ... + Support the enterprise architecture, design, development, and deployment of network services in support of government customer; collaborate and capture… more
    ManTech (08/21/25)
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  • Incident Manager III

    ARSIEM (Arlington, VA)
    …+ Knowledgeable of network security monitoring and/or security operations analysis, system administration , operating system hardening, cyber hygiene ... campaigns, tactics, techniques, and procedures + Familiar with basic system and network administration , traffic analysis techniques, Computer Network Defense… more
    ARSIEM (09/16/25)
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  • Mission IT Operator

    CACI International (Springfield, VA)
    …and holidays; 12-hour shift work expected in support of 24x7 operations . Desired Qualifications: - System administration experience to include UNIX, Linux, ... issues with IT infrastructure including user systems, servers, storage, and network connectivity. - Provides system administration for assigned infrastructure… more
    CACI International (07/31/25)
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