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System Administrator Jobs (On-site work)

90 Job Offers

High Performance Computer Linux System Administrator
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Seeking a High Performance Computer Linux System Administrator with an active Top Secret clearance in Stennis. This on-site role requires Security+ and Linux+ certifications, plus 5+ years of HPC admin experience. You will ensure system health, security, and hardware while offering critical techn...
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United States , Stennis
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101900.00 - 234500.00 USD / Year
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Hewlett Packard Enterprise
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Hpc Linux System Administrator
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Seeking an HPC Linux System Administrator to maintain critical systems in Berkeley, USA. This on-site role requires US citizenship, deep expertise in Linux (RHEL/SLES), workload managers, and parallel file systems. You will ensure high availability, resolve complex hardware/software issues, and d...
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United States , Berkeley
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78700.00 - 181200.00 USD / Year
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Hewlett Packard Enterprise
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High Performance Computing Linux System Administrator
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Join HPE as a High Performance Computing Linux System Administrator in Salt Lake City. This role requires a TS/SCI clearance and involves managing large-scale HPC systems, parallel file systems, and providing mission-critical customer support. Utilize your expertise in Linux (RHEL/SLES), scriptin...
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United States , Salt Lake City
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115500.00 - 266000.00 USD / Year
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Hewlett Packard Enterprise
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System Administrator L2
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Seeking a skilled System Administrator L2 in Gurgaon to manage IT operations for 20,000+ endpoints. You will handle OS patching, upgrades, and compliance using tools like ManageEngine Endpoint Central. This role requires 5+ years of experience, relevant certifications, and offers health benefits ...
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India , Gurgaon
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Not provided
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Hewlett Packard Enterprise
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System Administrator 1
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Seeking a System Administrator with an active Security Clearance in Annapolis Junction. Provide Tier 1/2 support, manage IT infrastructure, and configure UNIX/Windows systems. Requires 5+ years of experience, DOD 8570 Certification, and U.S. Citizenship. Enjoy top-tier medical, dental, vision, an...
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United States , Annapolis Junction
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Columbia Technology Partners
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System Administrator 2
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Seeking a Level 2 System Administrator in Annapolis Junction to provide Tier 1/2 support for critical IT infrastructure. This role requires 10 years of experience, a security clearance, and expertise in Windows/UNIX, networks, and databases. We offer superior medical benefits, a 6% 401k match, an...
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United States , Annapolis Junction
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Columbia Technology Partners
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System Administrator Level 2
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Seeking a Level 2 System Administrator in Annapolis Junction. This role requires 10 years of experience, a security clearance, and DOD 8570 certification. You will provide Tier 1/2 support, manage IT infrastructure, and optimize system performance. We offer robust medical plans, a 6% 401k match, ...
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United States , Annapolis Junction
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Columbia Technology Partners
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High Performance Computing System Administrator
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Seeking a High Performance Computing System Administrator in Dayton, USA. This role requires a Top Secret clearance, 8+ years of HPC experience, and expertise in Linux, workload managers (e.g., Slurm), and high-speed networking. You will provide technical leadership, ensure system availability, a...
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United States , Dayton
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105500.00 - 243000.00 USD / Year
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Hewlett Packard Enterprise
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Senior Linux System Administrator - Support Engineer
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Join our HPC support team in Canberra as a Senior Linux System Administrator. You will design, maintain, and optimize mission-critical Linux and HPC infrastructure, ensuring high availability and performance. Utilize your expertise in scripting, automation, and parallel file systems to provide ad...
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Australia , Canberra
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Not provided
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Hewlett Packard Enterprise
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Federal HPC Linux System Administrator
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Join HPE as a Federal HPC Linux System Administrator in Annapolis Junction. This role requires a TS/SCI clearance and expertise in large-scale HPC, parallel file systems, and Linux (RHEL/SLES). You will provide critical technical leadership, system optimization, and customer support for mission-c...
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United States , Annapolis Junction
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119500.00 - 275000.00 USD / Year
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Hewlett Packard Enterprise
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System Administrator
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Seeking a System Administrator with 10+ years of experience for a critical national security program in Fort Meade. This role requires an Active Full Scope Polygraph and involves supporting IT systems, troubleshooting, and managing UNIX/Windows environments. We offer a robust benefits package inc...
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United States , Fort Meade
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Not provided
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Aquila Technology
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Senior System Administrator
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Join Centrico's innovative fintech team as a Senior System Administrator in Biella, Italy. You will manage critical network infrastructure, including F5 load balancers and Checkpoint/Fortinet firewalls, and design Cloud/Hybrid Cloud (Azure) environments. This role requires strong problem-solving ...
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Italy , Biella
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Centrico
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Senior System Administrator
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Join Centrico's innovative fintech team as a Senior System Administrator in Biella, Italy. You will manage critical network infrastructure, including F5 load balancers and Checkpoint/Fortinet firewalls, in Cloud/Hybrid environments. This role requires strong problem-solving skills, fluency in Eng...
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Italy , Biella
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Centrico
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System Administrator
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Join Hemostasis LLC as a System Administrator in Saint Paul. You will configure hardware, software, and network systems, managing servers and Meraki infrastructure. We seek a proactive professional with a Master's in Computer Science and strong problem-solving skills. Enjoy full benefits includin...
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United States , Saint Paul
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Hemostasis Corp
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Windows System Administrator III
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Lead the design and lifecycle management of critical server infrastructure as a Windows System Administrator III in Savannah. This senior role requires 6+ years of expertise in Windows/Linux servers, VMware, Active Directory, and M365. You will provide technical leadership, implement high-impact ...
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United States , Savannah
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79000.00 - 112959.00 USD / Year
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Hyundai AutoEver America
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System Administrator
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Join Amgen as a System Administrator in Holly Springs. You will own the manufacturing data ecosystem, supporting critical automation platforms like DeltaV and Rockwell. This role requires experience in pharmaceutical/biotech manufacturing and IT infrastructure. We offer a comprehensive benefits p...
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United States , Holly Springs
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92770.00 - 122223.00 USD / Year
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Amgen
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System Administrator
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Seeking a cleared System Administrator to support mission-critical operations at Fort Eustis, VA. You will manage and sustain Windows Server and Linux systems within secure, classified environments. This role requires strong skills in DISA STIG compliance, troubleshooting, and ensuring operationa...
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United States , Fort Eustis
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Not provided
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Barbaricum
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System Administrator / Asset Manager
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Seeking a System Administrator / Asset Manager for a dual-role position at Fort Leavenworth, KS. This role requires an active DoD Top Secret/SCI clearance and expertise in classified IT systems administration and asset lifecycle management. You will maintain systems, track inventory, and ensure c...
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United States , Fort Leavenworth, Kansas
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Barbaricum
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System Administrator
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Seeking a System Administrator (journeyman to Senior) in Pax River, MD, supporting Air Traffic Control systems. This role requires a BS degree, Security+ certification, and strong Linux expertise for vulnerability scanning and STIG compliance. U.S. Citizenship and ability to obtain a Top-Secret c...
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United States , Pax River
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Coherent Technical Services
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System Administrator II
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Seeking a Systems Administrator II to provide technical leadership for server infrastructure in Savannah. This role requires 5+ years of Windows/Linux administration and 2+ years of VMware vSphere/vSAN expertise. You will design and implement high-impact IT solutions using leading-edge technologi...
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United States , Savannah
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Salary
68680.00 - 98208.00 USD / Year
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Hyundai AutoEver America
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About the System Administrator role

Explore a world of opportunity in system administrator jobs, the backbone of modern IT infrastructure. System administrators are the essential technicians who ensure an organization's computer systems—from servers and networks to software and security—run reliably, securely, and efficiently. This critical profession sits at the intersection of technology and operations, demanding a blend of deep technical expertise, proactive problem-solving, and clear communication. Professionals in this field are responsible for the day-to-day health of IT environments, making them indispensable in virtually every industry, from finance and healthcare to education and government.

The core responsibilities of a system administrator are vast and varied, typically encompassing system installation, configuration, and maintenance. This includes setting up hardware and software, managing user accounts and access permissions, and performing regular system updates and patches. A significant portion of the role involves monitoring system performance and network activity to preempt issues and ensure optimal uptime. System administrators are also the first line of defense for cybersecurity, implementing firewalls, intrusion detection systems, and backup/disaster recovery plans to protect sensitive data. Furthermore, they provide crucial technical support to colleagues, diagnosing and resolving hardware, software, and network problems to minimize disruption. Automating repetitive tasks through scripting is a common practice to enhance efficiency and consistency across the IT landscape.

To thrive in system administrator jobs, individuals must possess a strong foundational skill set. Proficiency in operating systems is paramount, with deep knowledge of environments like Linux (e.g., Red Hat, Ubuntu) and/or Microsoft Windows Server being highly common. Understanding networking fundamentals—such as TCP/IP, DNS, DHCP, and VPNs—is non-negotiable. Experience with virtualization platforms like VMware or Hyper-V, along with cloud services from providers such as AWS, Azure, or Google Cloud, is increasingly essential. Scripting skills in Bash, PowerShell, or Python are highly valued for automation. Beyond technical prowess, successful system administrators exhibit excellent analytical and problem-solving abilities, meticulous attention to detail, and the capacity to manage multiple priorities in a high-pressure environment. Strong written and verbal communication skills are critical for documenting procedures, creating user guides, and explaining complex technical concepts to non-technical stakeholders.

Typical requirements for these roles often include a bachelor’s degree in computer science, information technology, or a related field, although substantial relevant experience can sometimes substitute for formal education. Professional certifications, such as CompTIA Security+, Linux+, Microsoft Certified: Azure Administrator, or Red Hat Certified System Administrator (RHCSA), are frequently sought by employers and can significantly enhance a candidate's profile. A commitment to continuous learning is vital due to the rapid evolution of technology. For those with a passion for building, maintaining, and securing the digital frameworks that power businesses, system administrator jobs offer a challenging, stable, and rewarding career path with endless avenues for specialization and advancement.