• Senior High Performance Computing (HPC)…

    BAE Systems (Saratoga Springs, UT)
    …large client-server based IT enterprise in installation, configuration, and networking of Linux and Windows based platforms. + Oversee servers running Red Hat, ... architecture + Support Tier 3 Infrastructure services such as: DNS, NIS, Active Directory, Centrify, Zenoss, SiteScope, HP Openview, HP Oneview, HPSA, HPSE, SPLUNK,… more
    BAE Systems (10/03/25)
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  • Senior Hybrid Cloud Systems Administrator

    The Boeing Company (Hazelwood, MO)
    …Company's Specialized United States Infrastructure organization is currently seeking a ** Senior Hybrid Cloud Systems Administrator** to join the team in **Hazelwood, ... systems, connectivity diagrams, and create standard operating procedures for system administration tasks + Mentor junior team members and provide leadership, while… more
    The Boeing Company (10/08/25)
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  • Senior Systems Engineer

    Robert Half Technology (Las Vegas, NV)
    …meet service level agreements and key performance indicators. + Oversee administration of Windows Server (2016/2019/2022) environments, Active Directory, Group ... Description As a Senior Systems Engineer, you will design, implement, and...junior engineers and IT staff, particularly in Wintel server administration best practices. + Maintain on-call availability as part… more
    Robert Half Technology (09/06/25)
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  • Senior System Integrator Engineer (TS/SCI)

    Vexterra Group (Bethesda, MD)
    …and O&M team members on the following key tasks: DUTIES * Perform Linux builds, installs, configuration, administration , and troubleshooting of both Linux ... Vexterra Group is currently searching for a Senior Systems Integrator Engineer to provide the following...can work on their own * Expertise in configuration, administration , and troubleshooting of Linux (RHEL/CentOS, Ubuntu)… more
    Vexterra Group (07/15/25)
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  • Senior System Administrator

    Fiserv (Overland Park, KS)
    …**What you will need to have:** + 7+ years of experience in system administration in Windows & Linux environments. + Bachelor's degree in Computer Science ... scale, come make a difference at Fiserv. **Job Title** Senior System Administrator **What does a successful Senior...overseeing system reliability, performance, and security across Windows and Linux environments. As a key player in our team,… more
    Fiserv (10/09/25)
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  • Senior Systems Administrator

    ChenMed (Miami, FL)
    …We're rapidly expanding and we need great people to join our team. The Senior Systems Administrator is responsible for the administration , management and health ... when available. The incumbent in this role, as a senior position within the IT Operations team, is accountable...enterprise communications platform such as Office365 or G-Suite + Active Directory and certificate services administration +… more
    ChenMed (09/18/25)
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  • Infrastructure Senior Engineer,…

    Citigroup (Jersey City, NJ)
    **About the Position** We are looking for an industry wide Senior Subject Matter Expert (SME) - Infrastructure who can provide leadership and direction for ... Tuning, HPC SME will be responsible for ensuring best in breed Linux and surrounding technology architecture and engineering in alignment with business requirements.… more
    Citigroup (09/10/25)
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  • Senior Platform Engineer/ Senior

    RTX Corporation (Marlborough, MA)
    ….Net, bash, etc. + Experience with RedHat IDM + Experience with RedHat Linux system administration + Experience with Collaborator or other source code ... Type:** Onsite **U.S. Citizen, US Person, or Immigration Status Requirements:** Active and transferable US government issued security clearance is required prior… more
    RTX Corporation (09/04/25)
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  • (Mid. or Senior ) System Administrator

    Belay Technologies (Annapolis Junction, MD)
    …engineers, etc.) + Must be proficient with Windows Server 2012R2, 2016, 2019, and Active Directory + Must have experience with Linux and Microsoft-based servers ... team. The selected individual will be responsible for maintaining system administration support activities for a large complex network environment with… more
    Belay Technologies (10/01/25)
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  • Senior Systems Engineer

    ManTech (Chantilly, VA)
    …503. + Experience in Windows administration , active directory administration . + Experience in administrative scripting languages. + Experience with ... **MANTECH** seeks a motivated, career and customer-oriented ** Senior Systems Engineer** to join our team in...technologies. + Experience in all components of Windows and Linux system infrastructure. + Experience in Local Area Network/Wide… more
    ManTech (09/30/25)
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