• Epsilon, Inc (Arlington, VA)
    **Network Administrator II** **Epsilon is now part of AMERICAN SYSTEMS!** We are pleased to announce Epsilon, Inc. has joined AMERICAN SYSTEMS. Together, we're ... as a top priority. **An average day:** As Network Administrator II, you will be responsible for supporting and...Basic understanding of network security measures and familiarity with firewall technologies. + Exposure to VPN solutions and secure… more
    DirectEmployers Association (10/21/25)
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  • Firewall Administrator

    Chenega Corporation (Arlington, VA)
    **Req ID:** 37933 **Summary** ** Firewall Administrator ** **Arlington, VA** Are you ready to enhance your skills and build your career in a rapidly evolving ... cutting-edge technology and take your career to the next level! The ** Firewall Administrator ** is responsible for designing, implementing, and maintaining secure… more
    Chenega Corporation (10/03/25)
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  • Network Administrator (Weekends only)

    IT Veterans (Washington, DC)
    Network Administrator (Weekends only) Washington, DC . Information Technology Apply Now Network Administrator Washington, DC Job Summary: IT Veterans is looking ... for a skilled part-time Network Administrator to join our team and support secure network...incident response plans + Apply security patches, updates, and firewall configurations + Maintain up-to-date network diagrams, documentation, and… more
    IT Veterans (10/16/25)
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  • Network Administrator

    Leidos (Chantilly, VA)
    **Description** Leidos is seeking a Mid-level Forward Deployed Network Administrator to join our Network Engineering Team within the Engineering Operations group at ... resets, activations, and break/fix baseline problems. + Analyze syslogs, perform firewall ACL modifications, route tracing, and interface status monitoring on Cisco… more
    Leidos (08/16/25)
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  • Wireless Network Administrator

    TEKsystems (Bethesda, MD)
    …or CCNP professional certification Required Experience: Minimum three (3) years of network administrator experience * Must be able to obtain and maintain a NIH ... Public Trust Description How a Network Administrator will Make an Impact: Leverage in-person and virtual connections to coordinate work actions to take the burden of… more
    TEKsystems (10/18/25)
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  • Systems Administrator

    Arena Technical Resources, LLC (Silver Spring, MD)
    Systems Administrator Location: Silver Spring, US Job ID: ATR 17335 Job Description Job Title: Systems Administrator Location: Silver Spring, MD - Hybrid Remote ... the stability, security, and scalability of Linux and Windows systems - Troubleshoot firewall and network policies (LAN, WAN, VPN) - Review system error logs and… more
    Arena Technical Resources, LLC (10/21/25)
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  • Senior Network Administrator - TS/SCI…

    General Dynamics Information Technology (Washington, DC)
    …Yes **Job Description:** Transform technology into opportunity a Network Computer Systems Administrator with GDIT. A career in enterprise IT means connecting and ... people are our differentiator. As a Network Computer Systems Administrator , you will help ensure today is safe and...solutions and secure remote access. + Implement and manage firewall platforms (Cisco ASA/Firepower, Palo Alto, Juniper SRX) with… more
    General Dynamics Information Technology (09/11/25)
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  • Azure Entra Administrator

    Leidos (Gaithersburg, MD)
    **Description** Leidos is seeking a Microsoft Entra/Intune Systems Administrator to join our program in Gaithersburg, MD. This role supports a security-first ... devices in Intune; implement compliance policies (OS version, disk encryption, AV/ firewall , Secure Boot/TPM, Defender for Endpoint healthy). + Deploy Windows Hello… more
    Leidos (10/17/25)
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  • Cybersecurity System Administrator - DMV

    M. C. Dean (District Of Columbia, DC)
    Overview MC Dean is seeking a highly skilled **Cybersecurity System Administrator ** to support a secure operational technology environment by integrating advanced ... VMware + Cybersecurity frameworks: RMF, NIST SP 800-53, FISMA + Security monitoring, firewall , and encryption toolsets. + 3+ Years of Experience with a Master's… more
    M. C. Dean (08/27/25)
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  • Systems Administrator /Engineer…

    Shuvel Digital (Vienna, VA)
    Description: We are looking for a Mid level Systems Administrator /Engineer that can come in to take ownership of day-to-day operations. You will partner with ... and control processes are required + Strong knowledge of network, firewall , routing, switching, load balancing, and proxy principles and troubleshooting related… more
    Shuvel Digital (09/25/25)
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  • Senior Systems Administrator

    Leidos (Vienna, VA)
    **Description** The National Security Sector at Leidos is seeking a **Senior System Administrator ** to join a dynamic team based in **Tysons Corner, VA** . This ... + Hardware: Network Attached Storage (NAS) deployment and maintenance; Firewall , switch and router installation, deployment and maintenance; server **Additional… more
    Leidos (07/29/25)
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  • Network Operations Center (NOC)…

    Leidos (Arlington, VA)
    …within Leidos' Defense Group is seeking a **Network Operations Center (NOC) Administrator ** to provide coverage monitor tools and availability of the Compartmented ... connection. + VLAN configurations + Network trouble shooting. + Basic Firewall troubleshooting and configuration + Basic ISE/TACACs troubleshooting and configuration… more
    Leidos (10/03/25)
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  • Senior Linux Administrator

    General Dynamics Information Technology (Falls Church, VA)
    …the basis for IT Service Management (ITSM) model. **HOW A SENIOR LINUX ADMINISTRATOR WILL MAKE AN IMPACT:** + Provide system administration support for Linux ... and scripts. + Implement, configure, update, and maintain the Linux operating system firewall . + Experience in handling NFS, CIFS, and SMB permissions. **WHAT YOU'LL… more
    General Dynamics Information Technology (08/09/25)
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  • Senior Network Administrator

    Spectrum Comm Inc (Falls Church, VA)
    The Senior Network Administrator manages and maintains the headquarters' network infrastructure, ensuring high availability, performance, and security. This position ... oversees routing, switching, firewall configuration, and supports network-related projects. Key Responsibilities + Configure and manage routers, switches, firewalls,… more
    Spectrum Comm Inc (08/09/25)
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  • Cloud Security Manager - Microsoft Azure

    Deloitte (Mclean, VA)
    …of third-party technologies to assist in securing the Azure platform such as firewall , WAF, PAM and cloud workload protection. + Assist clients with configuration ... subscription management and configuration, identify management and access control, firewall management, auditing and monitoring, security incident and event… more
    Deloitte (09/13/25)
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  • Network Engineer 3 - Washington

    M. C. Dean (District Of Columbia, DC)
    …analyzes, performance tunes, and make recommendations to optimize network + Manages firewall security appliances + Keeps the Division abreast of emerging network ... etc) + ITIL 4 Foundation + Microsoft Certified: Windows Server Hybrid Administrator Associate + Microsoft Certified: Azure Database Administrator Associate +… more
    M. C. Dean (08/27/25)
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  • Network Operation Center Engineer

    BOOZ, ALLEN & HAMILTON, INC. (Columbia, MD)
    …the technology supporting our client's no-fail, unique mission? We're looking for a systems administrator who spe cia lizes in Red Hat Enterprise Linux to help us ... threats to defend the United States and its allies. As a systems administrator on our project, you'll ensure the current infrastructure is functional and available… more
    BOOZ, ALLEN & HAMILTON, INC. (10/05/25)
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  • Platform/Infrastructure Engineer

    Nightwing (Sterling, VA)
    …operating systems. + Networking: Knowledge of network protocols, routing, and firewall configurations. + Scripting: Proficiency in scripting languages like Python, ... Linux Certifications: Linux Professional Institute (LPI), Certified Linux System Administrator (CLSA). + Infrastructure-as-Code Certifications: Terraform Certified Professional. +… more
    Nightwing (09/26/25)
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  • Systems Engineer, Messaging

    Marriott (Bethesda, MD)
    …plus. + Certifications such as Microsoft 365 Certified: Messaging Administrator Associate; Cisco Secure Email training/certifications preferred. + Strong ... migration waves, and publish requirements; partner with App/Network owners for firewall and testing. + Implement & enforce email authentication: deploy… more
    Marriott (09/24/25)
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  • EndPoint Systems Engineer

    CACI International (Mclean, VA)
    …plans. In this role you will: * Perform hands-on Microsoft system administrator experience in the planning, migrating, deploying and maintaining Microsoft 365 ... installations, data sources * Perform integrations with network devices, such as VPN, firewall , routing * Strong problem-solving skills and the ability to work under… more
    CACI International (09/30/25)
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