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IT System Administrator United States Jobs

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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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Not provided
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Lake Superior State University
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System Administrator
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Seeking a System Administrator in Annapolis Junction, MD, supporting a government customer. This role requires strong Linux and Ansible skills, plus experience with Kubernetes, ProxMox, and HCI solutions. An active TS/SCI/Full Scope Polygraph clearance is mandatory.
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United States , Annapolis Junction
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2HB
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System Administrator
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Seeking a System Administrator in Mechanicsburg to provide comprehensive IT support, including desktop hardware, software installation, and network security. This role requires strong troubleshooting skills, knowledge of IT concepts, and experience in help desk or end-user support. You will admin...
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United States , Mechanicsburg
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Not provided
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Ocean Blue Solutions
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Travel Systems Administrator
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Seeking a detail-oriented Travel Systems Administrator in the San Francisco Bay Area. You will manage corporate travel logistics, administer the internal booking system, and handle expense reconciliation. Ideal candidates have 2+ years of admin experience, proficiency in MS Office, and strong org...
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United States , San Francisco Bay Area
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28.00 - 30.00 USD / Hour
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80Twenty
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Systems Administrator
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Join our Austin-based team as a Systems Administrator on a contract basis. You will manage enterprise VoIP, macOS/Windows environments, and MDM platforms like JAMF/Intune. Provide Tier 2 support and enhance security while utilizing tools like Google Workspace and Slack. This role offers competiti...
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United States , Austin
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Not provided
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Robert Half
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Contract Systems Administrator
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Join our client in Nashville as a Contract Systems Administrator. You will configure and maintain servers, networks, and security protocols using Windows, Linux, and virtualization. This contract role offers competitive benefits including medical, dental, and a 401(k) plan for eligible profession...
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United States , Nashville
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Robert Half
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Systems Administrator
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Join our team in Victor, USA, as a Systems Administrator. You will maintain client infrastructure, provide technical support, and assist with internal systems. The role requires expertise in Microsoft environments, Azure, VMware/Hyper-V, and hardware troubleshooting. A relevant degree or 3 years ...
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United States , Victor
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70000.00 - 85000.00 USD / Year
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Brite
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Travel Systems Administrator
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Seeking a detail-oriented Travel Systems Administrator in the San Francisco Bay Area. You will manage corporate travel logistics, administer the internal booking system, and handle expense reconciliation. Ideal candidates have 2+ years of admin experience, proficiency in MS Office, and strong org...
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United States , San Francisco Bay Area
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28.00 - 30.00 USD / Hour
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80Twenty
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Systems Administrator
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Join GRAEF as a Systems Administrator in Milwaukee. Support our 10 U.S. offices, managing Microsoft Azure, cybersecurity tools, and network infrastructure. We seek an IT professional with 8+ years' experience and relevant certifications. Enjoy a hybrid schedule, team collaboration, and great down...
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United States , Milwaukee
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GRAEF
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IT Systems Administrator
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Seeking an IT Systems Administrator in Warrendale to provide expert end-user support and advanced system maintenance. You'll manage helpdesk tasks, perform network/server upkeep, and oversee VMware virtual environments. Requires 2+ years of experience, strong skills in Windows/OS, O365, Active Di...
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United States , Warrendale
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Parking Network B.V.
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Systems Administrator
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Seeking a Systems Administrator in Little Rock to manage our VMware and server infrastructure. You will deploy, monitor, and secure Windows/Linux systems, Active Directory, and disaster recovery solutions. This role requires 3+ years of experience and offers a full benefits package including medi...
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United States , Little Rock
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Not provided
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Robert Half
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Mortgage LOS Systems Administrator / Encompass Systems Analyst
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Seeking a Mortgage LOS Systems Administrator with expertise in ICE Encompass or Black Knight. You will configure, enhance, and support loan origination platforms, collaborating on system improvements and troubleshooting. This Des Moines role offers a competitive package including bonus, profit sh...
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United States , Des Moines
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100000.00 USD / Year
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Robert Half
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Travel Systems Administrator
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Seeking a detail-oriented Travel Systems Administrator in the San Francisco Bay Area. You will manage corporate travel logistics, administer the internal booking system, and handle expense reconciliation. Ideal candidates have 2+ years of admin experience, proficiency in MS Office, and strong org...
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United States , San Francisco Bay Area
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28.00 - 30.00 USD / Hour
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80Twenty
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Cloud System Administrator
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Join our team in Pasadena, CA as a Cloud System Administrator. Lead cloud migration and manage Azure, Office 365, and VMware vSphere platforms. Utilize PowerShell for automation and ensure security with Defender and Intune. We offer comprehensive benefits including medical, dental, vision, and a ...
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United States , Pasadena, CA
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80000.00 - 90000.00 USD / Year
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Robert Half
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Senior Network and Systems Administrator
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Seeking a Senior Network and Systems Administrator for a critical role at USSOCOM HQ on MacDill AFB, FL. This position requires 7+ years of network design/support experience, active Secret clearance, and IAT certification. You will manage secure LAN systems, ensure DISA compliance, and perform ke...
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United States , MacDill AFB, FL
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Not provided
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Delta Solutions & Strategies
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IBM i Infrastructure Systems Administrator
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Join our team in Dayton, NJ, as an IBM i Infrastructure Systems Administrator. You will maintain and optimize critical Linux and IBM i environments, ensuring system reliability and security. This role requires deep expertise in legacy systems, networking, and custom integrations. We offer compreh...
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United States , Dayton
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Not provided
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Robert Half
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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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Not provided
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Robert Half
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Travel Systems Administrator
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Seeking a detail-oriented Travel Systems Administrator in the San Francisco Bay Area. You will manage corporate travel logistics, administer the internal booking system, and handle expense reconciliation. Ideal candidates have 2+ years of admin experience, proficiency in MS Office, and strong org...
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United States , San Francisco Bay Area
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28.00 - 30.00 USD / Hour
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80Twenty
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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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Not provided
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Columbia Technology Partners
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Explore a world of opportunity in IT System Administrator jobs, the backbone of modern organizational technology. IT System Administrators are the essential professionals responsible for installing, configuring, maintaining, and securing the critical hardware and software systems that keep businesses running. This career path sits at the intersection of technical expertise and operational reliability, offering a dynamic and rewarding profession for those who enjoy problem-solving and ensuring seamless digital workflows. In a typical role, an IT System Administrator’s responsibilities are vast and vital. They manage and monitor an organization's servers, often leveraging virtualization platforms like VMware or Hyper-V, and are increasingly involved with cloud services from providers such as AWS, Microsoft Azure, or Google Cloud Platform. A core duty is maintaining network services, including Active Directory, DNS, DHCP, and email systems like Microsoft Exchange or Microsoft 365. They ensure all endpoints—employee laptops, desktops, and mobile devices—are properly configured, updated, and secure, frequently using tools like Microsoft Intune or Jamf. System Administrators also implement robust backup solutions, conduct disaster recovery tests, and apply security patches and updates to protect against vulnerabilities. They provide escalated technical support, troubleshoot complex system issues, and create detailed documentation for system configurations and procedures. The skill set for these jobs is both broad and deep. Foundational knowledge of operating systems is paramount, with expertise in Windows Server and/or Linux distributions being highly common. Understanding core networking concepts (TCP/IP, routing, firewalls) and security principles (access controls, hardening, compliance frameworks) is non-negotiable. Proficiency in scripting with PowerShell, Bash, or Python to automate repetitive tasks is a major asset that increases efficiency. Strong analytical and problem-solving skills are essential for diagnosing system failures or performance bottlenecks. Equally important are soft skills: clear communication to assist colleagues and document processes, meticulous attention to detail, and the ability to manage multiple priorities in a high-pressure environment. Typical requirements for IT System Administrator jobs often include a bachelor’s degree in computer science, information technology, or a related field, though relevant experience and professional certifications can be equally valuable. Certifications such as Microsoft Certified: Azure Administrator Associate, CompTIA Server+, CompTIA Security+, Red Hat Certified System Administrator (RHCSA), or VMware Certified Professional (VCP) are frequently sought by employers. A successful candidate is typically proactive, eager to learn new technologies as the IT landscape evolves, and committed to maintaining system uptime and security. For those passionate about building stable, efficient, and secure digital infrastructures, pursuing IT System Administrator jobs offers a stable career with continuous growth and challenge. It is a role where technical skill directly translates into organizational success, making these professionals indispensable in every sector of the economy.

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