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IT System Administrator Jobs

522 Job Offers

Windows System Administrator III
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Lead the design and lifecycle management of critical server infrastructure as a Windows System Administrator III in Savannah. This senior role requires 6+ years of expertise in Windows/Linux servers, VMware, Active Directory, and M365. You will provide technical leadership, implement high-impact ...
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United States , Savannah
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79000.00 - 112959.00 USD / Year
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Hyundai AutoEver America
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Middle System Administrator
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Join our team as a Middle System Administrator to maintain a secure, modern Zero Trust infrastructure. You will manage Linux/Windows systems, Cloudflare ZTNA, and MDM solutions while automating with Bash/Python. We offer health insurance, a benefits cafeteria, and a focus on knowledge sharing. Th...
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United States
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Not provided
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JatApp
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Systems Administrator
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Join JMC Aviation as a Systems Administrator in Exeter. You will play a vital role managing the Bullhorn CRM system, ensuring data integrity, and providing user support. We seek a proactive professional with strong technical, organizational, and communication skills. Enjoy benefits including a qu...
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United Kingdom , Exeter
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Not provided
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JMC Aviation
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Cloud Systems Administrator
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Seeking a Cloud Systems Administrator in Colorado Springs to support secure government programs. This role requires 2+ years of Windows/Linux admin experience and AWS cloud expertise. You will implement IaC with Ansible, manage security via STIGs, and troubleshoot complex systems. A technical deg...
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United States , Colorado Springs
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Not provided
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Knight Federal Solutions
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Tactical Integrator (Systems Administrator)
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Join Knight Federal Solutions as a Tactical Integrator in Newport, RI. You will design and integrate next-gen submarine training systems, focusing on Linux/network administration. This role requires Linux expertise (RHEL/CentOS), scripting skills, and system troubleshooting. Support critical unde...
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United States , Newport, RI
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Not provided
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Knight Federal Solutions
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Cloud Systems Administrator
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Seeking a Cloud Systems Administrator in Arlington to support critical government programs. This role requires 2+ years of Windows/Linux admin experience, AWS cloud expertise, and proficiency with Splunk and STIGs. An active TS/SCI clearance and a DevSecOps background are essential. Join a team r...
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United States , Arlington
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Not provided
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Knight Federal Solutions
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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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Not provided
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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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Junior system administrator
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Join Newired as a Junior System Administrator in Ostrava. Manage virtual machines (Linux, Windows, Mac), cloud infrastructure, and internal tools like GitLab. We seek a motivated learner with basic Git, networking skills, and English. Enjoy a competitive salary, hybrid work, and great equipment.
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Czech Republic , Ostrava
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Not provided
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Newired
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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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Sr. System Administrator 7 HCL Domino Servers
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Seeking a Senior System Administrator to lead the upgrade of 7 HCL Domino Servers from v9.0.1 to 12.x in Santa Clara. This role requires 10+ years of Domino administration, clustering, and migration expertise. You will plan the project, train staff, and provide post-implementation support.
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United States , Santa Clara
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Not provided
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Nexlogica
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System Administrator
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Seeking a skilled System Administrator in Harrisburg to manage hosted application environments (MS, MSL, Colo, Cloud, SDC). You will transform business needs into technical specs, draft solution proposals, and provide customer support. This role requires expertise in ServiceNow, IT infrastructure...
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United States , Harrisburg
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Ocean Blue Solutions
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Associate Systems Administrator
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Join our team as an Associate Systems Administrator, specializing in Zendesk. You will own and optimize our Zendesk environment in Atlanta, ensuring reliability and empowering exceptional client support. Your role involves configuring workflows, managing integrations, and providing technical expe...
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United States , Atlanta
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26.00 - 34.00 USD / Hour
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Planet DDS
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Systems Administrator
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Join Premium Health's growing IT team as a Systems Administrator in Brooklyn. Maintain essential IT operations, including Windows, Active Directory, and O365, while providing critical helpdesk support. Enjoy benefits like medical plans, PTO, and partial remote work. A self-driven professional wit...
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United States , Brooklyn
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85000.00 - 110000.00 USD / Year
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Premium Health
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Linux System Administrator
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Join our InstaCarma team in Bangalore as a Linux System Administrator. Utilize your 1+ year of Linux admin and networking experience to provide 24x7 support and optimize system performance. Key skills include AWS, scripting (Shell/Python), and strong troubleshooting abilities. RHCE/RHCT certifica...
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India , Bangalore
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Not provided
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RailsCarma
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Corrigo System Administrator
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Join our team in Morelia as a Corrigo System Administrator. You will manage and support our CMMS platform, handling backend configuration, asset management, and user support. The role requires 5+ years of Corrigo or similar FM system experience. We seek a detail-oriented professional with strong ...
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Mexico , Morelia
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59.00 USD / Hour
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Realign
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Associate Manager, Corporate Accounting – Financial Systems Administration and Master Data Governance
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Join SC Johnson's global finance team as an Associate Manager in Corporate Accounting. This hybrid role focuses on financial systems administration, master data governance, and supporting SAP/BPC platforms. You will ensure data integrity and support critical processes like month-end close and bud...
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United States , Racine
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SC Johnson
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System Administrator / DevSecOps
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Join TapHere as a System Administrator/DevSecOps Engineer supporting a Government customer in Chantilly. This role requires an active TS/SCI clearance and 4+ years of DevSecOps, AWS, and configuration management (Ansible/Puppet/Chef) experience. You will develop CI/CD pipelines, maintain enterpri...
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United States , Chantilly
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Not provided
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TapHere! Technology
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About the IT System Administrator role

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.