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Senior Administrator United States Jobs

100 Job Offers

Senior Windows System Administrator
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Senior Windows System Administrator needed in Johns Creek, GA to manage, secure, and optimize enterprise Microsoft infrastructure. Requires 7+ years of experience with Windows Server, Active Directory, Microsoft 365, and VMware/Hyper-V. Key skills include PowerShell automation, cloud integration ...
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Location
United States , Johns Creek
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Not provided
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Tier4 Group
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New
System Administrator - Senior
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Senior System Administrator needed at Eglin AFB to support the 96th Cyberspace Test Group. Manage Windows 11, Active Directory, and M365 for 500+ users in a mission-critical environment. Requires 10+ years IT experience, Secret clearance (Top Secret eligible), and U.S. Citizenship. Enjoy competit...
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United States , Eglin Air Force Base
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Not provided
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Astrion
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Senior Database Administrator
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Senior Database Administrator needed to ensure reliability, security, and performance of mission-critical SQL Server systems. This hands-on role requires 7+ years of experience, deep expertise in performance tuning, high availability, and T-SQL automation. Join the Data Architecture and AI team i...
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Location
United States
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Not provided
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Tier4 Group
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Senior Systems Administrator
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Senior Systems Administrator needed in Aurora, CO for a hybrid role supporting Tier 1 & 2 IT operations. Requires 10+ years of systems administration experience and an active TS/SCI with Full Scope Polygraph. You will manage system configuration, troubleshooting, and user support for complex clie...
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United States , Aurora
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Not provided
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Riverstone Enterprise Solutions
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Senior Systems Administrator
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Senior Systems Administrator needed in Birmingham, AL to manage and enhance enterprise infrastructure. This role requires 5+ years of experience with VMware, Hyper-V, Windows Server, and Active Directory. You will ensure system reliability, provide high-touch technical support, and automate tasks...
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Location
United States , Birmingham
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Not provided
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Robert Half
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Senior Hris Administrator
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Senior HRIS Administrator role in Saint Paul, MN, seeking 5+ years of HRIS platform expertise, including UKG Pro/Ready. Drive HR technology strategy, governance, and process improvement while managing vendor relationships and leading system implementations. Requires strong analytics, compliance k...
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Location
United States , Saint Paul
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Not provided
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Robert Half
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Senior Lease Administrator
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Senior Lease Administrator needed in Rockville, MD to manage commercial property portfolios, lease abstraction, and billing. Requires 3+ years of lease administration experience, strong lease language interpretation, and intermediate Excel skills. JD Edwards (JDE) experience preferred. This role ...
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United States , Rockville
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Salary
75000.00 - 95000.00 USD / Year
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Beacon Hill
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Senior ServiceNow CMDB & Configuration Management Administrator
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Senior ServiceNow CMDB Administrator sought for a contract-to-hire role, 100% remote. Leverage 5+ years of enterprise experience driving CMDB governance, Discovery, and CSDM-aligned CI data modeling. Key responsibilities include managing reconciliation rules, MID servers, and complex integrations...
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United States , Detroit
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Not provided
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Zeektek
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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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United States , Birmingham
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Not provided
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Robert Half
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Senior Systems Administrator / Infrastructure Engineer
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Senior Systems Administrator / Infrastructure Engineer needed in Birmingham, AL. Leverage 5+ years of VMware and Windows Server expertise to ensure enterprise infrastructure stability and performance. This role focuses on virtualization, disaster recovery, and providing white-glove support. Enjoy...
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United States , Birmingham
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Not provided
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Robert Half
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Senior Systems Analyst III - Snowflake Administrator
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Senior Systems Analyst III / Snowflake Administrator needed for a major enterprise data modernization initiative with Texas HHSC in Austin, TX. This role requires 8+ years administering Snowflake, expertise in RBAC, SSO (Okta/SailPoint), and Snowflake Cortex AI. You will optimize secure, scalable...
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United States , Austin
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86.66 USD / Hour
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MMC Group LP
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It Senior System Administrator
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Seeking an experienced **IT Senior System Administrator** in Newkirk, OK to ensure the integrity and availability of critical casino systems. This role requires 6+ years of experience in systems administration, expertise in VMware, Active Directory, and security monitoring. You will manage server...
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United States , Newkirk
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Not provided
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7 Clans Casinos
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Senior Database Administrator
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Senior Database Administrator needed in Naperville, IL for a contract role optimizing enterprise data environments. Leverage 10+ years of deep expertise in SQL Server, PostgreSQL, and AWS platforms (RDS, Aurora, Redshift) to drive performance, scalability, and modernization. Responsibilities incl...
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United States , Naperville
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Robert Half
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Senior Systems Administrator
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Senior Systems Administrator needed in Phoenix to oversee mission-critical IT systems, including servers, virtualization, and cloud technologies. Requires 5+ years of progressive experience, an Associate’s degree, and a valid Arizona Driver’s License. Key duties include managing Active Directory,...
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Location
United States , Phoenix
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Not provided
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Robert Half
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Senior Salesforce Developer / Administrator
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Senior Salesforce Developer / Administrator needed in Los Angeles, CA. This role demands 8+ years of hands-on experience with Apex, Lightning Web Components, and Marketing Cloud. You will lead Salesforce Classic to Lightning migration, build custom LWC, and manage platform upgrades. Enjoy medical...
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United States , Los Angeles
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Intratek Computer, Inc.
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Senior IT Administrator
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Senior IT Administrator needed in North Little Rock, AR to lead cloud and hybrid infrastructure, security, and end-user support. Requires 3+ years of experience with Microsoft Entra ID, Intune, M365, and Windows Server. Oversee identity access, device management, and security operations. Benefits...
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United States , North Little Rock
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Not provided
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Robert Half
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Senior IT Support Administrator
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Senior IT Support Administrator needed in San Diego to deliver top-tier end-user support in a 100% cloud environment. This role requires 3+ years of experience, ITIL proficiency (Freshservice), and skills in Azure AD, Google Workspace, JAMF, and PowerShell. You will manage A/V systems, permission...
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United States , San Diego
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Salary
61200.00 - 84100.00 USD / Year
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Seismic
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Senior Contracts Administrator
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Senior Contracts Administrator sought by Everlaw to lead public sector contract excellence in Washington, D.C. Leverage 5+ years of FAR and SLED expertise to manage FED and SLED contracts, GSA vehicles, and compliance. This customer-facing role requires deep knowledge of government contracting fo...
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United States , Washington D.C.
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Salary
141000.00 - 179000.00 USD / Year
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Everlaw
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Senior Storage and Backup Administrator
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Senior Storage and Backup Administrator needed to join a global IT team in Carmel, US. This role requires 7+ years of experience managing enterprise storage (Dell PowerFlex, Unity, Data Domain) and backup tools (Veeam, Commvault, Cloud Backup). You will design, optimize, and support SAN/NAS envir...
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United States , Carmel
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Not provided
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Alter Domus
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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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Not provided
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Robert Half
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About the Senior Administrator role

Senior Administrator jobs represent a critical tier of professional management and technical oversight within an organization. These roles are designed for experienced individuals who move beyond foundational tasks to assume responsibility for complex systems, strategic processes, and often, the mentorship of junior staff. A Senior Administrator acts as a cornerstone of operational stability, ensuring that the specific domain they oversee—whether technological, financial, or operational—functions securely, efficiently, and in alignment with broader business objectives.

The core of the profession involves a blend of deep technical or procedural expertise and advanced organizational leadership. Common responsibilities across various specializations include designing, implementing, and maintaining critical systems or processes; performing high-level troubleshooting and problem-solving for complex issues; and ensuring compliance with industry regulations and security protocols. Senior Administrators are typically tasked with ongoing optimization, conducting regular reviews and updates to enhance performance and reliability. They also play a key role in planning for future needs, managing upgrades, and contributing to strategic projects. Documentation, policy creation, and knowledge sharing are fundamental aspects of the role, as is providing training and guidance to other team members.

The skill set required for Senior Administrator jobs is both broad and deep. Employers universally seek candidates with several years of proven experience in their specific field, demonstrating a progression from junior to expert-level understanding. Technical proficiency with relevant platforms, software, or industry-specific tools is mandatory. Equally important are strong analytical and problem-solving abilities to diagnose and resolve intricate challenges. Senior roles demand excellent communication skills for liaising with stakeholders, vendors, and team members, and often require the ability to translate technical details into business impacts. Leadership qualities, such as project management, team mentorship, and a proactive approach to process improvement, are common differentiators. A keen attention to detail, a commitment to maintaining confidentiality and security, and the ability to work under pressure to meet deadlines are standard expectations across all senior administration jobs.

Ultimately, professionals in these positions are the trusted experts who ensure vital organizational infrastructure—be it IT networks, employee benefits schemes, or enterprise software environments—remains robust and responsive. They bridge the gap between high-level strategy and daily execution, making them indispensable assets in any sector. For those seeking a career marked by responsibility, expertise, and impact, exploring Senior Administrator jobs offers a pathway to a pivotal and respected professional role.