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System Administrator United States Jobs

116 Job Offers

System Administrator III
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Seeking a skilled System Administrator III in Annapolis Junction to manage and troubleshoot critical IT infrastructure. You will configure UNIX/Windows systems, maintain servers (CentOS/RHEL), and resolve Tier 1/2 issues. This role focuses on enhancing system reliability, security (IAVA/POAM), an...
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United States , Annapolis Junction
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Not provided
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Wrench Technology
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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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Not provided
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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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68680.00 - 98208.00 USD / Year
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Hyundai AutoEver America
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Linux System Administrator
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Join Geon Technologies as a Linux System Administrator in Columbia, MD. This role requires 10+ years of experience, an active security clearance, and expertise in Linux/Unix, Kubernetes, and configuration management (e.g., Ansible). You will provide Tier 1/2 support, manage IT systems, and enjoy ...
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United States , Columbia
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175000.00 - 250000.00 USD / Year
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Geon Technologies
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Jr. System Administrator
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Launch your IT career at Lake Superior State University as a Jr. System Administrator. This role involves developing and maintaining applications for the Ellucian Banner system using Oracle PL/SQL and Java. You'll gain valuable experience in a collaborative higher-ed environment located in Sault ...
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United States , Sault Ste. Marie
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Lake Superior State University
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Azure System Administrator
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Join our team in Pleasanton, CA, as an Azure System Administrator. This contract-to-permanent role requires 3-5 years of experience managing Azure, Windows Server, and VMware. You will oversee cloud infrastructure, migrations, and security while providing Tier 2 support. We offer competitive bene...
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United States , Pleasanton
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Robert Half
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System Administrator Level 2
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Seeking an experienced System Administrator Level 2 in Annapolis Junction. This role involves managing IT infrastructure, providing Tier 1/2 support for client/server/storage/network systems, and configuring UNIX/Windows OS. Requires 10 years' SA experience, a security clearance, and DOD 8570 cer...
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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 an experienced System Administrator for a critical role in Annapolis Junction. This position requires an active Security Clearance, DOD 8570 Certification, and 10+ years of experience managing IT infrastructure, including UNIX/Windows systems and Tier 1/2 support. Enjoy top-tier benefits ...
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United States , Annapolis Junction
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Columbia Technology Partners
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System Administrator 1
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Seeking a System Administrator with 5+ years' experience to support IT systems in Annapolis Junction. This role involves managing UNIX/Windows infrastructure, providing Tier 1/2 support, and resolving hardware/network issues. Requires a security clearance, DOD 8570 cert, and offers strong benefit...
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United States , Annapolis Junction
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Columbia Technology Partners
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Workday Adaptive Configuration and System Administrator
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Seeking a Workday Adaptive Configuration and System Administrator for a remote US role. Manage and optimize the Adaptive Planning platform, handling configuration, integrations, and user support. Requires 5+ years of Workday Adaptive experience, strong FP&A knowledge, and SQL/Python skills. Ensur...
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United States , Remote
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Revel IT
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System Administrator
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Seeking a System Administrator to lead IT operations at Andersen AFB, Guam. This role requires a Bachelor's degree, 10+ years' experience, and Security+ certification. You will manage hardware/software systems and ensure compliance, requiring a Top Secret clearance. We offer full benefits includi...
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United States , Andersen AFB, Yigo
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TDX
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System Administrator
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Seeking a seasoned System Administrator to secure and modernize IT infrastructure within a regulated U.S. Defense environment. This Tampa-based role requires 7+ years' experience, expertise in Windows enterprise systems, and compliance knowledge (NIST/CMMC). U.S. citizenship and the ability to ob...
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United States , Tampa
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Aero Simulation, Inc. (ASI)
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SureView Systems (SVS) System Administrator
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Join SureView Systems as a System Administrator in Austin. You will build and maintain enterprise security application systems, requiring IAT Level II certification and system admin experience. This role involves troubleshooting access control, video, and intrusion systems, with 25% travel and fl...
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United States , Austin
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M.C. Dean, Inc
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IT System Administrator
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Seeking an IT System Administrator in Bonita Springs to manage and optimize our Yardi Voyager ERP and financial systems. You'll ensure data integrity, handle user access, and support integrations. Requires 3-5 years of ERP experience, SQL knowledge, and strong problem-solving skills. We offer a c...
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United States , Bonita Springs
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80000.00 USD / Year
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Rittenhouse Village At Michigan City
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System Administrator, Senior
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Seeking a Senior System Administrator in Columbia, MD, to design and maintain critical Cross Domain Solutions. Requires TS/SCI clearance, 5+ years' experience with Linux (RHEL/CentOS), VMware, and networking. This role offers competitive benefits and the chance to support vital national cybersecu...
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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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Learning Management System Administrator
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Seeking an experienced LMS Administrator to manage and optimize our PowerTrain learning platform. You will handle system configuration, user support, reporting, and content management in a secure, compliance-driven environment. This remote role based in McLean offers competitive benefits and the ...
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United States , McLean
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BLN24
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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.