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Systems Administrator United States Jobs (On-site work)

114 Job Offers

Systems Administrator
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Robert Half
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Systems Administrator - Microsoft Intune (Public Trust Clearance)
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Robert Half
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Systems Administrator / Data Integration Engineer
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Systems Administrator 1
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Seeking a **Linux Systems Administrator** in **Columbia, MD** with 5+ years of SA experience and an active Security Clearance with Polygraph. You will manage cloud/container environments, storage, virtualization, and IP networking while ensuring SSP compliance. IAT Level 2 certification required;...
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103000.00 - 155000.00 USD / Year
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RealmOne
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It Systems & Network Administrator
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We are seeking an experienced IT Systems & Network Administrator in Oklahoma City to manage Windows Server, Active Directory, and Cisco networking environments. This hands-on role involves supporting enterprise infrastructure, SQL systems, and escalated technical issues while driving long-term im...
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Contract Systems Administrator
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Seeking a skilled Contract Systems Administrator in Nashville for a reputable company. You will manage Windows Server, Linux, and network infrastructure, ensuring system security and performance. Requires proven experience in server administration, network management, and troubleshooting. Benefit...
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Systems Administrator
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Systems Administrator needed in Corpus Christi, TX to manage on-premises and cloud systems. You will support Microsoft Azure, Entra ID, and Windows Server while delivering frontline technical support. Requires 3+ years of experience with Microsoft technologies and strong troubleshooting skills. B...
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Systems Administrator
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We are seeking a Systems Administrator to support daily IT operations at our Fort Lauderdale, FL facility. This role requires 5+ years of hands-on experience with Active Directory, Windows Server, Citrix, and Dell technologies within a manufacturing environment. You will manage user support, infr...
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Robert Half
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Systems Administrator
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Systems Administrator (Linux)
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Amentum seeks a Linux Systems Administrator in Kauai, HI, to manage RHEL environments on Navy networks. You will implement RMF security controls, apply DISA STIGs, and perform system hardening. Requires a BS/BA or 8 years of experience, DoD 8570 IAT Level II, and RHCSA certification. Enjoy top be...
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105000.00 USD / Year
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Amentum
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Systems Administrator
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Network and Systems Administrator
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Network and Systems Administrator needed for a contract role in Philadelphia, PA, supporting a real estate firm. You will manage network infrastructure, provide end-user support, and lead security-focused projects. Key requirements include Apple environment expertise, Cisco/Meraki knowledge, and ...
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Systems Administrator
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Systems Administrator Mid-Level
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Seeking a Mid-Level Systems Administrator with a TS/SCI FS Polygraph to support critical U.S. Government missions in Linthicum. Requires 10+ years of experience and expertise in Linux (CentOS, RedHat) system administration. You will manage IT infrastructure, provide Tier 1/2 support, and troubles...
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155000.00 - 205000.00 USD / Year
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Integrity Technology Consultants
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Systems Administrator
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Seeking a skilled Systems Administrator in North Aurora, US, to maintain and enhance enterprise infrastructure. This role requires 3+ years of experience with Windows Server/Linux, Active Directory, and VMware/Hyper-V. You will manage servers, troubleshoot issues, and ensure system security. Enjo...
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Robert Half
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Senior Systems Administrator
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We are seeking a Senior Systems Administrator with 5+ years of experience in enterprise IT and Microsoft Azure. This role involves acting as a key escalation point for desktop support, managing Windows systems, Group Policy, and driving automation through PowerShell scripting. Based in Birmingham...
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Systems Administrator
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Seeking an experienced Systems Administrator for a long-term contract in Brunswick, ME. Support daily IT operations, manage Microsoft 365, and maintain secure network infrastructure. Requires 3+ years in IT support, expertise in endpoint management (Intune, NinjaOne), and networking fundamentals....
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Contract Data Administrator (CLM / Systems Integration Support)
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Detail-oriented Contract Data Administrator needed in Dallas to ensure contract data integrity across CLM, CRM, and billing systems. This role involves high-volume data entry, system reconciliation, and discrepancy resolution. Ideal candidates have 2-5+ years in contract administration or data ma...
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Beacon Hill
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Systems Administrator
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We are seeking a Systems Administrator to maintain and enhance enterprise infrastructure in North Aurora. You will manage Windows Server and Linux environments, Active Directory, and virtualization platforms like VMware. Ideal candidates have 3+ years of experience, strong troubleshooting skills,...
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Robert Half
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Systems Administrator
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BlueWater Federal seeks a Systems Administrator for the BCITS III program at Arnold AFB, TN. You will maintain Windows Server and virtual environments, perform system hardening, and manage backups. Requires 3+ years of experience, Microsoft or Red Hat certification, Security+, and an active Secre...
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BlueWater Federal Solutions
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About the Systems Administrator role

Explore a world of opportunity in Systems Administrator jobs, the backbone of modern IT infrastructure. Systems Administrators are the essential professionals responsible for installing, configuring, maintaining, and securing the critical computer systems that organizations rely on daily. This dynamic profession sits at the intersection of technology and operations, ensuring network services, servers, and data remain available, performant, and protected. Whether managing on-premises data centers, cloud environments, or hybrid systems, these experts are the troubleshooters and guardians of an organization's digital ecosystem.

The core responsibilities of a Systems Administrator are vast and vital. Typically, they involve the deployment and maintenance of server hardware and operating systems, such as Windows Server or various Linux distributions. Daily tasks include monitoring system performance, applying security patches and software updates, and managing user accounts and access permissions. A significant part of the role is ensuring robust backup procedures and disaster recovery plans are in place and tested to guarantee business continuity. Furthermore, Systems Administrators configure and manage essential network services like DNS, DHCP, email, and file sharing. They provide crucial technical support, resolving complex issues that end-users or automated alerts may escalate, and meticulously document system configurations and procedures for consistency and knowledge sharing.

The skill set required for Systems Administrator jobs is both technical and interpersonal. A strong foundational knowledge of operating systems, networking concepts (TCP/IP, routing, firewalls), and virtualization platforms (like VMware or Hyper-V) is paramount. Proficiency in scripting languages such as PowerShell, Bash, or Python is highly valued for automating repetitive tasks and improving efficiency. As security is paramount, understanding cybersecurity principles, implementing security policies, and conducting vulnerability assessments are standard expectations. Beyond technical prowess, successful Systems Administrators possess exceptional problem-solving and analytical abilities to diagnose and resolve issues under pressure. Clear communication skills are essential for collaborating with IT teams, explaining technical concepts to non-technical stakeholders, and creating clear documentation.

Typical requirements for entering this field often include a bachelor's degree in computer science, information technology, or a related field, though relevant experience and professional certifications can be equally compelling. Certifications from vendors like Microsoft (Azure, Windows Server), CompTIA (Security+, Network+), Red Hat (RHCSA), or Cisco (CCNA) are widely recognized and can significantly enhance a candidate's profile. Employers generally seek candidates with a proven track record of managing IT systems, a keen attention to detail, and a commitment to continuous learning in a rapidly evolving technological landscape. For those with a passion for problem-solving and a desire to ensure the seamless operation of critical technology, Systems Administrator jobs offer a challenging, rewarding, and stable career path with opportunities across every industry.