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Systems Administrator United States Jobs

311 Job Offers

Systems Administrator
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We are seeking a Systems Administrator to manage Microsoft 365 and Exchange Online in Brentwood, TN. You will provide Tier 2/3 support, administer mail flow, and automate tasks using PowerShell. Ideal candidates have 2+ years of enterprise M365 experience and Active Directory knowledge. Enjoy med...
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United States , Brentwood
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Not provided
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Robert Half
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Systems Administrator
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Apollo Mechanical seeks a skilled Systems Administrator in Denver to ensure server stability, security, and scalability. You will manage Windows Server 2016-2022, Hyper-V, Active Directory, and SAN storage. Key requirements include 3+ years of experience with SQL Server maintenance, Veeam backups...
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United States , Denver
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Not provided
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Apollo Mechanical Contractors
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Lead Systems Administrator
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Lead Systems Administrator needed in Colorado Springs to lead IT infrastructure and a team of system administrators for a USSF customer. Requires a TS/SCI clearance, 5+ years of systems admin experience, and expertise in Windows Server, Linux/Unix, and virtualization. This leadership role offers ...
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United States , Colorado Springs
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96534.61 - 167854.95 USD / Year
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Arcfield
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Systems Administrator III
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Seeking a Systems Administrator III in Colorado Springs to lead system integration, testing, and DevSecOps in secure DoD environments. Requires a BS degree, 5-7 years experience, CompTIA Security+, and an active TS/SCI clearance. Drive verification, validation, and automation while managing requi...
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United States , Colorado Springs
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79046.56 - 137446.63 USD / Year
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Arcfield
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Systems Administrator 2
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Amentum seeks a Systems Administrator 2 in Annapolis Junction, MD, to provide Tier 1/2 support for PKI tools. Requires a TS/SCI Poly, 10+ years of SA experience, and DoD 8570 IAT Level II certification. You will troubleshoot Windows/Linux issues, test new releases, and update SOPs. Benefits inclu...
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United States , Annapolis Junction
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Amentum
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Gtm Systems Administrator (Salesforce)
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Join Mews as our founding GTM Systems Administrator (Salesforce) in the US. Own Salesforce administration, manage requests from Sales & RevOps, and optimize our GTM stack (Gong, Clay). Requires 3+ years Salesforce experience, Admin certification, and strong RevOps fundamentals. Enjoy unlimited PT...
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United States
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80000.00 - 100000.00 USD / Year
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Mews
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Principal Systems Administrator
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Principal Systems Administrator needed onsite in Annapolis Junction, MD. Leverage 15+ years of systems administration expertise to support critical Intelligence Community missions. Manage IT systems, resolve Tier 1/2 issues, and optimize enterprise operations. Requires active TS/SCI with Full Sco...
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United States , Annapolis Junction
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175000.00 - 205000.00 USD / Year
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Riverstone Enterprise Solutions
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Dayforce HCM Systems Administrator
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Seeking an experienced **Dayforce HCM Systems Administrator** for a contract-to-hire role in **Des Moines, Iowa**. You will optimize enterprise HR/payroll systems, resolve complex integrations, and ensure data integrity. Requires 5+ years in HCM/ERP administration with hands-on **Dayforce** exper...
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United States , Des Moines
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Robert Half
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Senior Systems Administrator
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Senior Systems Administrator needed in Jacksonville to optimize enterprise infrastructure across on-prem and hybrid cloud environments. Requires 7+ years of Windows Server, Active Directory, and VMware expertise, plus Azure and PowerShell skills. Lead modernization, patching, disaster recovery, a...
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United States , Jacksonville
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Robert Half
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Systems Administrator
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We are seeking an experienced Systems Administrator for a high-volume, multi-site IT environment in White Bear Lake, MN. This hands-on role requires expertise in Windows Active Directory, Microsoft Entra ID, VMware, and PowerShell scripting. You will enhance system reliability, security, and auto...
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United States , White Bear Lake
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Robert Half
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Systems Administrator
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Seeking a **Systems Administrator** in **Aurora, CO** to provide Tier 2 support for mission-critical systems. Requires an active **TS/SCI with polygraph**, **Security+ CE**, and **UNIX/Linux** administration experience. You will maintain high availability across Solaris, Linux, and Windows, troub...
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United States , Aurora
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100000.00 - 200000.00 USD / Year
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Applied Network Solutions
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Systems Administrator
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Seeking a Systems Administrator for a contract-to-permanent role in Omaha, NE. You will manage enterprise server and network infrastructure, focusing on Active Directory, Microsoft 365, and Windows Server. Ideal candidates have 2+ years of experience with backup technologies, DNS, and security mo...
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United States , Omaha
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Not provided
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Robert Half
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Systems Administrator
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United States , White Bear Lake
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Robert Half
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GIS Systems Administrator
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Seeking an experienced **GIS Systems Administrator** for upcoming contract roles in **Charlotte, NC**. You will support enterprise **ESRI** environments, including **ArcGIS Enterprise**, **ArcGIS Online**, and **Cityworks**. Key requirements include expertise in **SQL**, **Python**, **PowerShell*...
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United States , Charlotte
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Robert Half
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Systems Administrator
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United States , Red Oak
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Robert Half
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Principal Systems Administrator
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Principal Systems Administrator needed onsite in Aurora, CO for Riverstone Enterprise Solutions. This role requires 15+ years of experience, a TS/SCI with Full Scope Polygraph, and expertise in IT system implementation, troubleshooting, and Tier 1/2 support. Join a zero-bureaucracy environment su...
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United States , Aurora
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175000.00 - 205000.00 USD / Year
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Riverstone Enterprise Solutions
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Senior Systems Administrator - Hybrid
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Senior Systems Administrator needed for a hybrid role in Aurora, CO, supporting critical national security programs. Leverage 10+ years of IT systems experience, including Tier 1/2 support and system optimization, with an active TS/SCI Full Scope Polygraph. Join a collaborative, zero-bureaucracy ...
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United States , Aurora
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155000.00 - 175000.00 USD / Year
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Riverstone Enterprise Solutions
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Systems Administrator
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Envision Innovative Solutions seeks a career-oriented Systems Administrator with 5+ years of experience to install, configure, and troubleshoot OS, hardware, and networks. You will manage system backups, upgrades, and technical support across multiple locations including Aberdeen Proving Ground, ...
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United States , Aberdeen Proving Ground
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Riverstone Enterprise Solutions
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Financial Techno Systems Analyst / Blackline Systems Administrator
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Join a global FinTech leader as a **Financial Techno Systems Analyst / Blackline Systems Administrator** in Des Moines, IA (hybrid). Own BlackLine administration, drive finance transformation, and optimize close processes. Requires hands-on BlackLine (or ARCS/Trintech) experience, SQL skills, and...
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United States , Des Moines
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120000.00 USD / Year
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Robert Half
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Systems Administrator
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Systems Administrator needed for a high-throughput manufacturing environment in Morrisville, NC. Stabilize critical infrastructure, bridge IT and OT systems, and administer Windows/Linux servers, virtualization, and endpoints. Requires 3+ years in industrial settings, air-gapped network experienc...
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United States , Morrisville
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Robert Half
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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.