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IT System Administrator Jobs (On-site work)

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Network & Systems Administrator
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Seeking a Network & Systems Administrator for a role in Canton, USA. This position involves the full lifecycle management of computer systems and networks. The ideal candidate has a Bachelor's degree and 0-4 years of experience with HTML, JSP, Windows Server, UNIX, and Linux. Travel or relocation...
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United States , Canton
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LogicQue
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Systems Administrator
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Seeking a Systems Administrator in Annapolis Junction to drive IT automation and modernization. This role requires 5+ years of Linux administration, Ansible, and shell scripting expertise, plus an active TS/SCI with Polygraph. You will implement secure solutions, ensure system reliability, and su...
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United States , Annapolis Junction
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100000.00 - 150000.00 USD / Year
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LufCo
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Senior Systems Administrator
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Lead automation and modernization efforts as a Senior Systems Administrator in Annapolis Junction. This mission-critical role requires 10+ years of Linux/Ansible expertise and an active TS/SCI with Polygraph. You'll optimize secure IT systems, drive PKI/OCSP initiatives, and enjoy top-tier benefi...
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United States , Annapolis Junction
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150000.00 - 250000.00 USD / Year
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LufCo
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Network and Systems Administrator
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Seeking a skilled Network and Systems Administrator in Bloomington, USA. You will configure, maintain, and troubleshoot critical hardware, software, and networks. The role requires expertise in Windows/Linux servers, Cisco/HP networking, VMware/Hyper-V, and security. Ideal candidates have a relev...
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United States , Bloomington
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Not provided
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Megaputer
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Systems Administrator
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Seeking a skilled Systems Administrator in Downey, USA, to oversee enterprise network maintenance and security. This role requires 5+ years of networking experience, expertise in Cisco technologies, and a security monitoring background. You will ensure systems align with business goals, troublesh...
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United States , Downey
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Not provided
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Nexlogica
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IT PACS Sr Systems Administrator
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Lead the administration and optimization of our critical PACS and enterprise imaging infrastructure. This senior role requires 7+ years of PACS experience, deep healthcare compliance knowledge, and collaboration with clinical teams. We offer comprehensive benefits including medical plans, generou...
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United States , Lexington
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44.18 - 65.71 USD / Hour
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American Nursing Care
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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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Systems Administrator IV
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Seeking an expert Systems Administrator IV in Huntsville, AL, requiring an active DoD Secret clearance. Lead the architecture and hardening of Windows Server/11 and VMware environments in compliance with DISA STIGs. Key duties include managing Active Directory, Group Policy, and supporting RMF/AT...
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United States , Huntsville, Alabama
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Arcfield
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Linux Systems Administrator
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Seeking a Linux Systems Administrator with an active Top Secret/SCI clearance to support TRADOC G2 at Fort Eustis, VA. You will manage and secure mission-critical RHEL environments, ensuring compliance with DISA STIGs. Key duties include system hardening, troubleshooting, and automating tasks wit...
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United States , Fort Eustis
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Barbaricum
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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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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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Senior System Administrator
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Join our team as a Senior System Administrator in Saint-Augustin-de-Desmaures. Leverage your 10+ years of expertise in Azure, AWS, Windows Server, and Entra/AD to manage complex physical, virtual, and cloud infrastructures. You will play a strategic advisory role, ensuring system performance, sec...
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Canada , Saint-Augustin-de-Desmaures
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Biscuits Leclerc Ltd
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Infrastructure System Administrator
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Join Ledger in Paris for a 6-month Infrastructure System Administrator internship. You will audit access management, enforce security policies, and enhance monitoring for self-hosted services. The role requires Linux, Ansible, Docker, and Prometheus skills, with scripting in Bash/Python. Enjoy so...
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France , Paris
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1500.00 EUR / Month
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Ledger
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Systems Administrator
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Join our team as a Systems Administrator in El Segundo. Support our enterprise IT, managing Microsoft 365, VMware, and AWS environments. Ideal candidates have scripting skills and foundational security knowledge. We offer comprehensive benefits including full family medical coverage.
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United States , El Segundo
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55000.00 - 75000.00 USD / Year
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Tecolote Research
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Systems Administrator
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Seeking a Systems Administrator in Alpharetta to manage Sun Solaris/UNIX servers and databases for high-performance websites and large-scale data processing. This role requires a Master's degree (or Bachelor's with 5 years' experience) and 6 months of relevant systems maintenance expertise. Exten...
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United States , Alpharetta
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Nebula Partners
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Systems Administrator
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Seeking a Systems Administrator in Alpharetta to install, configure, and maintain UNIX and database servers for high-performance websites and large-scale data processing. This role requires expertise in Sun Solaris systems and involves travel to client sites across the USA. A relevant Master's de...
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United States , Alpharetta
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Nebula Partners
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Systems Administrator
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Seeking a Systems Administrator in Alpharetta to install, configure, and maintain UNIX and database servers for high-performance websites and large-scale data processing. This role requires expertise in Sun Solaris systems and involves travel to client sites across the USA. A relevant Master's de...
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United States , Alpharetta
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Not provided
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Nebula Partners
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Systems Administrator
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Join our team as a Systems Administrator in Memphis. This onsite role requires expertise in on-prem systems, Microsoft technologies, VMware, and Cisco Meraki networking. You will provide end-to-end IT support and help evolve our hybrid environment toward Azure. We offer comprehensive benefits inc...
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United States , Memphis
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Not provided
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Robert Half
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Senior Systems Administrator
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Join Naughty Dog's IT team as a Senior Systems Administrator in Santa Monica. You will be the primary expert for our Windows/Linux infrastructure and core systems, supporting game development. Requires 10+ years in studio environments, expertise in Windows Server, Ubuntu, and deployment tools. Th...
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United States , Santa Monica
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149000.00 - 187200.00 USD / Year
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Naughty Dog
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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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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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