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System Administrator Jobs (On-site work)

92 Job Offers

System Administrator
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Join Vention as a System Administrator in Tashkent. Provide first-line IT support across Windows, Linux, and MacOS, managing software, hardware, and network issues. Enjoy benefits like AI tool licenses, expanded medical support, and 19+ vacation days in a global engineering community.
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Uzbekistan , Tashkent
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Vention
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System Administrator
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Join Aquila Technology as a System Administrator supporting premier defense research in Lexington. Maintain a heterogeneous network (Linux, Windows, VMware) and support DevSecOps with Ansible automation. Must be a US Citizen eligible for Secret Clearance with strong scripting and problem-solving ...
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United States , Lexington
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Aquila Technology
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System Administrator
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Seeking a System Administrator to support USAF Test Operations at Arnold AFB, TN. Deploy and manage Windows/Linux servers, VMware, and enterprise tools like SCCM. Requires a relevant degree, 5-10 years' experience, and ability to obtain security clearance. We offer competitive pay, benefits, and ...
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United States , Arnold AFB
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84000.00 - 145000.00 USD / Year
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Astrion
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Core Infrastructure System Administrator
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Seeking a Core Infrastructure System Administrator in Fremont to manage enterprise systems and security technologies. You'll maintain Windows/Linux servers, ensure security, and support access control systems. Requires 5+ years of sys admin experience and PACS knowledge. We offer full benefits, P...
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United States , Fremont
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114640.00 - 171960.00 USD / Year
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M.C. Dean, Inc
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Security Systems System Administrator 2
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Join our global tech team as a Security Systems Administrator in Fremont. You will maintain and test critical Physical Access Control, CCTV, and PSIM systems. The role requires experience with system triage, Windows patching, and networking. We offer comprehensive benefits including medical insur...
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United States , Fremont
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99680.00 - 149520.00 USD / Year
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M.C. Dean, Inc
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IT System Administrator
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Join our key partner's technical infrastructure program as an IT System Administrator, specializing in End User Computing & Lab Support. This 12-month contract in Brno offers a long-term project engagement. You will manage Windows OS, deploy software, support hardware, and configure lab devices. ...
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Czech Republic , Brno
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RED Commerce - The Global SAP Solutions Provider
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Senior System Administrator
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Join 2HB Incorporated as a Senior System Administrator in Annapolis Junction, MD. This role requires expertise in Windows/Linux Server, VMware/ESXi, and NetApp storage, with an Active DoD IAT Level II cert. You will ensure system security, perform troubleshooting, and manage network resources. Id...
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United States , Annapolis Junction
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2HB
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Senior System Administrator / System Engineer - Linux
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Seeking a Senior Linux System Administrator/Engineer for a mission-critical Intelligence Community role in Annapolis Junction. Requires 10+ years' expertise with RHEL/CentOS, VMware, JBoss/WildFly, Ansible, and scripting. Active Security Clearance with Polygraph and Security+ certification are ma...
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United States , Annapolis Junction
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Columbia Technology Partners
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Senior System Administrator / System Engineer - Linux
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Seeking a Senior Linux System Administrator/Engineer for a mission-critical Intelligence Community role in Annapolis Junction. This position requires 10+ years of Linux expertise (CentOS/RHEL), VMware, Ansible, and an active Security Clearance. Enjoy top-tier benefits including a 6% 401k match, c...
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United States , Annapolis Junction
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Columbia Technology Partners
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Hpc Linux System Administrator
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Join HPE in Bangalore as an HPC Linux System Administrator. You will manage and optimize high-performance computing clusters, ensuring peak performance and security. This role requires strong Linux administration skills and experience with tools like Slurm, Ansible, and Lustre. We offer a focus o...
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India , Bangalore
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Hewlett Packard Enterprise
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System Administrator Senior
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Seeking a Senior System Administrator to support HPC and data analytics for a critical research lab. This role requires extensive Linux/Windows expertise, TS/SCI clearance with polygraph, and 8+ years of lead experience. You will design, maintain, and optimize cutting-edge systems in a mission-fo...
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United States , Catonsville
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77600.00 - 176000.00 USD / Year
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Booz Allen Hamilton
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System Administrator
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Seeking a Linux System Administrator in Columbia, MD to design and maintain Cross Domain Solutions for critical DoD cybersecurity missions. Requires 3+ years with RHEL/CentOS, VMware, Git, and an active TS/SCI with polygraph. You'll enhance enterprise security and performance while receiving comp...
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United States , Columbia
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77600.00 - 176000.00 USD / Year
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Booz Allen Hamilton
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Core Systems System Administrator
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Join our global technology team in Singapore as a Core Systems Administrator. You will maintain critical security systems, including Physical Access Control, and ensure the integrity of Windows/Linux servers. This role requires 5+ years of sys admin experience and offers professional growth with ...
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Singapore , Singapore
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M.C. Dean, Inc
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System Administrator
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Join our team as a System Administrator in Ahmedabad. Manage and support our hybrid IT infrastructure, including servers, networks, and cloud platforms. Utilize your 3+ years of experience in Windows/Linux, Active Directory, and virtualization. Provide critical end-user support and ensure system ...
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India , Ahmedabad
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Prakash Software Solutions Pvt. Ltd
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System Administrator
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Join our team as a Linux System Administrator in Tricity, India. This role requires 1-5 years of experience, Red Hat certification, and expertise in scripting and database management. You will ensure 24/7 infrastructure uptime, implement automation, and perform proactive system monitoring. We off...
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India , Tricity (Mohali, Panchkula and Chandigarh)
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RV Technologies Softwares Pvt. Ltd.
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System Administrator
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Seeking an experienced System Administrator in Richardson, TX. You will manage enterprise Microsoft technologies, including Active Directory, Office 365, and virtualization. The role requires strong PowerShell skills and expertise in cloud platforms (Azure/AWS). Drive continuous improvement in a ...
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United States , Richardson
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Associa
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IT System Administrator
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United States , New York City
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150000.00 - 185000.00 USD / Year
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Legora
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Administrator III - System & Applications Administration
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India , Pune
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Cencora
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Qlikview & Qliksense Administrator III - System & Applications Administration
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India , Pune
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Cencora
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Senior Linux System Administrator
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United States , Annapolis Junction
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Synergy ECP
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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.