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IT System and Administrator Jobs

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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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Sr. Systems Administrator (Unix Administrator)
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Seeking a Senior Unix Systems Administrator in Lapu-Lapu City to fortify our cyber resiliency. You will manage Red Hat, HP-UX, and Solaris servers, focusing on DMZ vulnerability remediation using tools like Rapid7 and CyberArk. This role requires 5-8 years of experience in a large global environm...
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Philippines , Lapu-Lapu City
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Teradyne
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IT System Administrator
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Join efood as an IT System Administrator in Neo Irakleio. Provide critical end-user support, manage systems across Windows, macOS, and Linux, and handle platforms like Intune and Okta. Enjoy a comprehensive package including private insurance, mental health support, and an in-house gym.
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Greece , Neo Irakleio
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Delivery Hero
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Linux Systems Administrator
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Join our team in Philadelphia as a Linux Systems Administrator. You will deploy and maintain critical vCMTS and R-PHY systems, ensuring high availability in a 24/7 environment. We require 5-10 years of Linux administration and strong Cisco/Juniper networking expertise. This role offers comprehens...
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United States , Philadelphia
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Robert Half
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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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Seeking a skilled Systems Administrator for a contract role in Nashville. You will manage Windows/Linux servers, network infrastructure, and security protocols. This position offers comprehensive benefits and requires strong troubleshooting and problem-solving skills.
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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 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 IT team in Guildford as a Systems Administrator. You will maintain and upgrade our Microsoft-centric infrastructure, including M365/Azure and virtualised systems. This role involves 1st/2nd line support, security monitoring, and developing new services. We offer private medical insurance...
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United Kingdom , Guildford
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Actica Consulting
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Senior System Administrator
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Seeking a Senior System Administrator in Milwaukee to manage and innovate our Windows server infrastructure. You will design, administer, and maintain on-premise and Azure cloud systems, ensuring optimal performance and security. This role requires deep expertise in Microsoft ecosystems, virtuali...
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United States , Milwaukee
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Amla Commerce
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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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Linux Systems Administrator
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Seeking a Linux Systems Administrator in Fort Meade with an active TS/SCI Poly. This role requires 10 years' experience, VMWare/Linux expertise, and IAT certification. You will design, secure, and maintain critical custom solutions while enjoying top-tier benefits like a 6% 401(k) match and exten...
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United States , Fort Meade
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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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Staff Systems Administrator
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Join Bluestaq as a Staff Systems Administrator in Canberra or Brisbane. Utilize your 8+ years of Linux, AWS, and networking expertise to ensure secure, 24/7 operations across cloud and on-premise systems. Enjoy benefits like a performance bonus, extra leave, and health allowances while supporting...
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Australia , Canberra; Brisbane
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Bluestaq
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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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