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System Administrator United States Jobs

116 Job Offers

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Cloud System Administrator
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Senior Cloud System Administrator needed in Springfield, VA to support mission-critical intelligence projects. Requires TS/SCI with Polygraph, cloud certification (AWS/OCI/Google), and 5+ years experience. You will deploy, troubleshoot, and maintain cloud systems for the GEODS contract. Enjoy top...
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United States , Springfield
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150000.00 - 180000.00 USD / Year
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Amentum
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New
System Administrator
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2HB Incorporated seeks a System Administrator for a government role in Annapolis Junction, MD. You will manage ALL LINUX environments, containers/cloud, storage, virtualization, and IP networking. Expertise in PKI/TLS/crypto and SSP compliance is required. This full-time position offers a chance ...
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United States , Annapolis Junction
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2HB
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New
System Administrator
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2HB Incorporated seeks a System Administrator in Annapolis Junction, MD, to support a government customer. This role requires a TS/SCI/Full Scope Polygraph and expertise in Linux, containerization, KVM virtualization, and Ansible/SALT automation. You will manage storage, FreeIPA, scripting (Bash,...
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United States , Annapolis Junction
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2HB
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System Administrator - Mid-Level
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Mid-Level System Administrator needed at Eglin AFB, FL to support the 96th Cyberspace Test Group. Requires a STEM Bachelor’s degree, 3-10 years’ experience, and an active DoD SECRET clearance. Key duties include Windows/Linux system administration, RMF/STIG compliance, and PowerShell scripting. B...
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United States , Eglin Air Force Base
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Astrion
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System Administrator 2
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Seeking a Senior System Administrator in Annapolis Junction, MD to ensure IT system reliability across Linux, Windows, and AWS cloud environments. This role requires 10+ years of experience, Kubernetes, Terraform, and Ansible skills, plus an active Security Clearance and DOD 8570 certification. Y...
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USA , Annapolis Junction
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120000.00 - 175000.00 USD / Year
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Columbia Technology Partners
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Physical Security System Administrator 1
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Join our Security and Electronic Systems team as a Physical Security System Administrator 1 in San Jose. You’ll troubleshoot and support access control, video surveillance, and key management systems (CCURE, Lenel, Genetec) for federal and commercial clients. Requires 1+ years of enterprise physi...
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United States , San Jose
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83120.00 - 124680.00 USD / Year
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M.C. Dean, Inc
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It Senior System Administrator
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Seeking an experienced **IT Senior System Administrator** in Newkirk, OK to ensure the integrity and availability of critical casino systems. This role requires 6+ years of experience in systems administration, expertise in VMware, Active Directory, and security monitoring. You will manage server...
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United States , Newkirk
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7 Clans Casinos
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Microsoft Architect & System Administrator
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Seeking a Microsoft Architect & System Administrator for a Digital Modernization team in Washington, DC. You will engineer and administer enterprise Microsoft environments, including Active Directory, Entra ID, SCCM, and Intune. Requires a Bachelor’s degree, U.S. Citizenship, and expert-level Pow...
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United States , Washington
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Robert Half
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Microsoft Architect & System Administrator
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Seeking a Microsoft Architect & System Administrator for a Digital Modernization team in Washington, DC. You will engineer, integrate, and secure enterprise Microsoft environments (Active Directory, Entra ID, SCCM/Intune) across on-prem and cloud. Requires a Bachelor’s degree, U.S. Citizenship, a...
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United States , Washington
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Robert Half
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Junior Microsoft System Administrator
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Join INSCOM as a Junior Microsoft System Administrator in Arlington, VA. Support global intelligence missions by managing Windows Server, Active Directory, and desktop environments. Requires 3+ years of experience with Windows 10/11, Office 365, and imaging. Enjoy comprehensive benefits including...
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United States , Arlington
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125000.00 - 130000.00 USD / Year
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Amentum
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System Administrator
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Seeking an experienced **System Administrator** for a critical role at Ft. Gordon, supporting Tier 1 & 2 IT operations. You will manage UNIX/Windows systems, network devices, and infrastructure while providing troubleshooting and problem resolution. Requires 5-15+ years of SA experience, a techni...
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United States , Ft. Gordon
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RealmOne
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System Administrator
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We are seeking a skilled System Administrator to manage Linux systems and Kubernetes clusters in Fairborn, OH. You will leverage Docker, Helm, and cloud-based environments to ensure high availability and seamless CI/CD workflows. Ideal candidates possess strong networking, security, and monitorin...
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United States , Fairborn
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Altamira Technologies
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Corporate System Administrator
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Seeking a cleared Corporate System Administrator in Columbia, MD, to manage Windows/Linux systems, Active Directory, and Azure cloud infrastructure. Requires 5-7 years’ experience, a Bachelor’s in IT, and an active security clearance with polygraph. Key skills include Hyper-V, Veeam backups, and ...
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United States , Columbia
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130000.00 - 180000.00 USD / Year
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RealmOne
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EPM Financial System Administrator
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Seeking an **EPM Financial System Administrator** in **New York** to manage Oracle EPBCS & FCCS environments. You will ensure system stability, security, and performance while driving scalable solutions with finance and IT. Requires 5+ years of Oracle EPM Cloud experience, Groovy scripting, and s...
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United States , New York
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95000.00 - 115000.00 USD / Year
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Hunter Douglas
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Junior System Administrator
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Seeking a **Junior System Administrator** in **Newport, RI** to maintain multi-user computer systems. Requires a BS degree, 0-2 years experience, and **CompTIA Security+** certification. You will manage backups, system security, and performance tuning while working towards a **Secret clearance**....
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United States , Newport
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51091.74 - 88838.63 USD / Year
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Arcfield
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System Administrator 2
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Columbia Technology Partners seeks a System Administrator Level 2 for mission-critical telecom and IT infrastructure in Annapolis Junction. This role requires 10+ years of experience, a DOD 8570 IAT Level 2 certification, and an active Security Clearance with Polygraph. You will ensure 24/7 syste...
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United States of America , Annapolis Junction
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115000.00 - 160000.00 USD / Year
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Columbia Technology Partners
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System Administrator
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Join Cryptic Vector as a System Administrator at Fort Meade, supporting classified programs with Docker, Kubernetes, and AWS (EC2, EKS, RDS). Requires 3+ years of containerized production experience, active TS clearance, and high-side network expertise (NSANet, JWICS). Enjoy 100% company-paid med...
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United States , Fort Meade
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Cryptic Vector
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Linux System Administrator
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Join Altamira Technologies as a Linux System Administrator in Chantilly, VA, supporting U.S. National Security. You will sustain and evolve a Cross Domain Solution (CDS) using Red Hat Linux, Ansible, Docker, and Python/Bash scripting. Requires TS/SCI with CI Poly, expertise in virtualization (VMw...
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United States , Chantilly
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Altamira Technologies
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System Administrator
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Join our cybersecurity team as a System Administrator at Eglin AFB, FL, supporting the 48th Cyberspace Test Squadron. You’ll manage Windows/Linux systems, deploy security updates, and perform compliance assessments for Air Force/Space Force systems. Requires a SECRET clearance, 3–10 years of IT e...
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United States , Eglin Air Force Base
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Astrion
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WSS Engineer / Epic Client System Administrator (ECSA)
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Seeking an experienced WSS Engineer / Epic Client System Administrator (ECSA) in Plano, TX. You will optimize and secure our Epic ecosystem, managing Hyperspace, Interconnect, and Cache/IRIS. Requires 10+ years of Epic infrastructure experience, Windows Server, and virtualization expertise. Join ...
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United States , Plano
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95918.00 - 222031.00 USD / Year
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NTT DATA
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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.