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IT System and Administrator Jobs (On-site work)

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System Administrator Level 2
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Seeking a Level 2 System Administrator in Annapolis Junction. This role requires 10 years of experience, a security clearance, and DOD 8570 certification. You will provide Tier 1/2 support, manage IT infrastructure, and optimize system performance. We offer robust medical plans, a 6% 401k match, ...
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United States , Annapolis Junction
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Columbia Technology Partners
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High Performance Computing System Administrator
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Seeking a High Performance Computing System Administrator in Dayton, USA. This role requires a Top Secret clearance, 8+ years of HPC experience, and expertise in Linux, workload managers (e.g., Slurm), and high-speed networking. You will provide technical leadership, ensure system availability, a...
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United States , Dayton
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105500.00 - 243000.00 USD / Year
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Hewlett Packard Enterprise
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Senior Linux System Administrator - Support Engineer
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Join our HPC support team in Canberra as a Senior Linux System Administrator. You will design, maintain, and optimize mission-critical Linux and HPC infrastructure, ensuring high availability and performance. Utilize your expertise in scripting, automation, and parallel file systems to provide ad...
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Australia , Canberra
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Hewlett Packard Enterprise
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Systems Administrator
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Join our team in Sparta, Michigan as a Systems Administrator. Utilize your expertise in Microsoft platforms, Active Directory, and network troubleshooting to deliver tailored client solutions. We offer competitive compensation, comprehensive benefits, and free online training in a collaborative e...
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United States , Sparta
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Robert Half
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Systems Administrator
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Join our team as a Systems Administrator in Fort Worth. Provide vital technical support for Windows systems, networks, and video conferencing platforms like Zoom and Teams. We seek a skilled professional with 3+ years of experience, excellent communication, and customer service skills. Enjoy comp...
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United States , Fort Worth
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Robert Half
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Federal HPC Linux System Administrator
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Join HPE as a Federal HPC Linux System Administrator in Annapolis Junction. This role requires a TS/SCI clearance and expertise in large-scale HPC, parallel file systems, and Linux (RHEL/SLES). You will provide critical technical leadership, system optimization, and customer support for mission-c...
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United States , Annapolis Junction
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119500.00 - 275000.00 USD / Year
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Hewlett Packard Enterprise
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Linux Systems Administrator
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Join our team as a Linux Systems Administrator in Roseville. Utilize your 5+ years of Linux, NFS, and virtualization (VMware/KVM) expertise to manage critical infrastructure. Automate tasks with Bash/Python/Ansible and provide excellent technical support. We offer comprehensive wellbeing benefits...
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United States , Roseville
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106000.00 - 243000.00 USD / Year
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Hewlett Packard Enterprise
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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. The role requires 2+ years of admin experience, proficiency in MS Office, and strong organiz...
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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 mission-critical team in Reston, VA as a Systems Administrator. This role requires an active TS/SCI with Polygraph and expertise in VMware, scripting (PowerShell/Bash), and Active Directory. We offer competitive pay, generous benefits, and the chance to mentor junior staff in a dynamic e...
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United States , Reston
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AnaVation
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Systems Administrator
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Join ANS as a Systems Administrator in Fort Meade, MD. This role requires an active TS/SCI clearance with Polygraph and 10 years' experience managing AWS, Linux, and Windows systems. You will design, secure, and maintain critical solutions while enjoying top benefits like a 6% 401(k) match and ex...
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United States , Fort Meade, MD
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100000.00 - 165000.00 USD / Year
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Applied Network Solutions
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System Administrator
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Seeking a System Administrator with 10+ years of experience for a critical national security program in Fort Meade. This role requires an Active Full Scope Polygraph and involves supporting IT systems, troubleshooting, and managing UNIX/Windows environments. We offer a robust benefits package inc...
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United States , Fort Meade
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Aquila Technology
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Senior Linux Systems Administrator
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Seeking a Senior Linux Systems Administrator with an active Secret Clearance to support premier defense research in Lexington. This role requires 5+ years in Linux networking, scripting (Python/Ansible/Bash), and systems configuration. You will administer RHEL servers, optimize performance, and e...
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United States , Lexington
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Aquila Technology
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Systems Administrator
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Join Bluestaq in Colorado Springs as a Staff Systems Administrator. Maintain and secure critical cloud/on-premise systems, ensuring 24/7 uptime for mission-driven work. Apply your Linux admin skills and problem-solving passion in a collaborative, growth-focused environment supporting vital indust...
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United States , Colorado Springs
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78000.00 - 92500.00 USD / Year
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Bluestaq
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Senior System Administrator
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Join Centrico's innovative fintech team as a Senior System Administrator in Biella, Italy. You will manage critical network infrastructure, including F5 load balancers and Checkpoint/Fortinet firewalls, and design Cloud/Hybrid Cloud (Azure) environments. This role requires strong problem-solving ...
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Italy , Biella
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Centrico
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Senior System Administrator
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Join Centrico's innovative fintech team as a Senior System Administrator in Biella, Italy. You will manage critical network infrastructure, including F5 load balancers and Checkpoint/Fortinet firewalls, in Cloud/Hybrid environments. This role requires strong problem-solving skills, fluency in Eng...
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Italy , Biella
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Centrico
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Kubernetes Systems Administrator
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Seeking a Kubernetes Systems Administrator in Dayton to support NASIC's ATEP II program. This role requires 5+ years of Linux/Unix admin experience and involves system implementation, troubleshooting, and optimization. Desired skills include Docker, AWS, and Security+. We offer a comprehensive be...
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United States , Dayton
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Evanhoe & Associates
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Linux Systems Administrator
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Seeking a Linux Systems Administrator with an active TS/SCI clearance for an onsite role in Dayton. This position supports critical IT systems, requiring 5+ years' experience with RedHat/Linux and shift work. Enjoy robust benefits including 401(k) with immediate vesting and comprehensive medical ...
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United States , Dayton
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Evanhoe & Associates
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Senior Systems Administrator
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Seeking a Senior Systems Administrator with an active TS/SCI clearance for a role in El Segundo. Manage and secure Windows servers/workstations in a classified environment, ensuring compliance and system integrity. This role offers company-paid benefits, a 401(k) with 6% company contribution, and...
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United States , El Segundo
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120000.00 - 150000.00 USD / Year
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ExoAnalytic Solutions
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System Administrator
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Join Hemostasis LLC as a System Administrator in Saint Paul. You will configure hardware, software, and network systems, managing servers and Meraki infrastructure. We seek a proactive professional with a Master's in Computer Science and strong problem-solving skills. Enjoy full benefits includin...
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United States , Saint Paul
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Hemostasis Corp
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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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Explore a world of opportunity in IT System and Administrator jobs, a critical profession that forms the backbone of modern organizational technology. Professionals in this field are responsible for the installation, configuration, maintenance, and security of an organization's computer systems and networks. Their core mission is to ensure that IT infrastructure—from servers and storage to cloud services and user workstations—remains reliable, efficient, and secure, enabling all other business functions to operate smoothly. A career in system administration typically involves a diverse set of responsibilities. System Administrators manage core services like user accounts, email systems, and directory services (e.g., Active Directory). They oversee server environments, which may include physical hardware, virtualized platforms (like VMware), and cloud resources (such as AWS or Azure). Daily tasks often encompass monitoring system performance, applying software updates and security patches, managing backups and disaster recovery plans, and troubleshooting hardware and software issues. They also enforce IT security policies, configure firewalls, and implement access controls to protect sensitive data from breaches. Furthermore, creating and maintaining detailed technical documentation for procedures and system configurations is a standard part of the role. The skill set required for these jobs is both broad and deep. Strong foundational knowledge of operating systems—particularly Windows Server and Linux distributions—is essential. Proficiency in networking concepts (TCP/IP, DNS, DHCP) and experience with scripting languages like PowerShell, Bash, or Python for automation are highly valued. Familiarity with cloud platforms, virtualization technologies, and containerization (e.g., Docker) is increasingly important. Beyond technical prowess, successful System Administrators possess excellent problem-solving and analytical abilities to diagnose and resolve complex issues. They must have clear communication skills to interact with colleagues, provide user support, and explain technical concepts to non-technical stakeholders. A methodical approach, attention to detail, and a commitment to following IT security best practices and compliance frameworks are paramount. Typical requirements for IT System and 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 persuasive. Certifications such as Microsoft Certified: Azure Administrator, CompTIA Security+, Network+, Linux+, or those from VMware and AWS are common and demonstrate specialized expertise. The role suits individuals who are proactive, eager to continuously learn in a fast-evolving field, and capable of working both independently and as part of a collaborative IT team. If you are passionate about building stable, secure, and scalable technological environments, exploring system administrator jobs could be your pathway to a rewarding and indispensable career.

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