• Sr . Principal Systems Administrator

    Northrop Grumman (Aurora, CO)
    …+ Must have server administration experience with Linux RHEL 7x - 9x and Windows Server 2022 and above and Windows workstation 10 and above. + ... Experience with host-based firewall implementations and configuration (Redhat "iptables") + Windows 10 administration experience; Windows Server experience;… more
    Northrop Grumman (11/06/25)
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  • Sr Principal Systems Administrator

    Northrop Grumman (Aurora, CO)
    …Experience with host-based firewall implementations and configuration (Redhat "iptables") + Windows 10 administration experience; Windows Server experience; ... history. Northrop Grumman Space Systems (NGSP) is seeking a ** Sr Principal Systems Administrator ** to join our...to, the following:** + Perform as a Linux and Windows System Administrator on large government contracts.… more
    Northrop Grumman (11/13/25)
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  • Sr Principal Linux Systems…

    Northrop Grumman (Boulder, CO)
    …networking, including subnets, routing, and VLANs + Cisco experience and/or certifications + Windows server management experience + Windows Active Directory, ... Digital Office (CIDO) organization is seeking a highly experienced ** Senior Linux Server Admin** to join its...to the following: + Perform as primary Linux Systems Administrator for a classified government contract. + Communicate effectively… more
    Northrop Grumman (12/12/25)
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  • Senior / Principal Windows System…

    SciTec (Boulder, CO)
    …requirements will not be considered. SciTec has an immediate opportunity for a talented Senior / Principal Windows System Administrator to join our team ... a Windows system administrator + Strong knowledge of Microsoft Windows desktop and server environments including experience managing and troubleshooting … more
    SciTec (11/19/25)
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  • Windows Administrator

    GovCIO (Denver, CO)
    …VA and will be a remote position. **Responsibilities** This position is for a Senior Systems Administrator supporting the Windows team. This is currently ... **Overview** GovCIO is currently hiring for a Windows Administrator , tocreate and maintain team technical instructions, operating procedures and policies as… more
    GovCIO (12/24/25)
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  • Senior Linux Systems Administrator

    Leidos (Aurora, CO)
    **Description** **Leidos** has a new and exciting opportunity for a ** Senior Linux Systems Administrator ** in our **National Security Sector's (NSS) Cyber & ... in National** **Security!** Join our team as a **Linux Systems Administrator ** , where you'll provide crucial support for the implementation, troubleshooting,… more
    Leidos (12/19/25)
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  • Senior Enterprise Messaging…

    Dentons US LLP (Denver, CO)
    …managing and troubleshooting Outlook email clients. + In-depth understanding of Microsoft Windows Server environments, including 2016, 2019, and 2022. + Hands-on ... Senior Enterprise Messaging Administrator Chicago, IL,...years' experience in managing Exchange systems, including Microsoft Exchange Server 2013 / 2016 / 2019 and Exchange Online… more
    Dentons US LLP (12/13/25)
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  • Senior Systems Administrator

    ISYS Technologies (Colorado Springs, CO)
    …in Linux (basic administration, user management, file systems, permissions) and Windows Server . Understanding TCP/IP, DNS, DHCP, routing, switching, and ... initiatives of our government customers. I2X Technologies is seeking a Systems Administrator to support ongoing activities for a customer in Colorado Springs, CO… more
    ISYS Technologies (12/09/25)
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  • Senior Database Administrator

    Highmark Health (Denver, CO)
    …Citizen (due to contractual/access requirements) We are seeking a Database Administrator with experience in PostgreSQL databases within Google Cloud Platform (GCP), ... as well knowledge in Microsoft SQL Server on-prem environment. This role involves comprehensive support for...and computing platform such as Z/OS, UNIX, Linux, and Windows + Take a lead role in conducting root… more
    Highmark Health (10/28/25)
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  • Associate System Administrator

    Lockheed Martin (Littleton, CO)
    …0 2 years of hands\-on system administration or technical support in a Windows /Linux environment Technical Skills: Windows Server , Linux, Hypervisors ... to ever evolving threats\. What You Will Be Doing As a **System Administrator ** within this dynamic environment, you will be the guardian of the program's… more
    Lockheed Martin (12/18/25)
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