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Senior Administrator United States Jobs (On-site work)

53 Job Offers

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Senior Administrative Assistant
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United States , Louisville
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Robert Half
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Senior Contracts Administrator
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United States , Colorado Springs
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100000.00 - 120000.00 USD / Year
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Amentum
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Senior Grant Administrator
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United States , Waltham
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79700.00 - 88800.00 USD / Year
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Brandeis University
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Senior Remedy Database Administrator
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United States , Fort Belvoir
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Not provided
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Chickasaw Nation Industries, Inc (CNI)
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Senior Database Administrator
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United States , Fort Belvoir
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Chickasaw Nation Industries, Inc (CNI)
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Grants Administrator Analyst Senior
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Seeking a Senior Grants Administrator Analyst in Winston Salem to lead Neurology's extramural funding efforts. You will manage the full grant lifecycle, from pre-award proposals to post-award administration. This role requires a Bachelor's degree, 5+ years of experience, and exceptional organizat...
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United States , Winston Salem
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35.50 - 53.25 USD / Hour
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Advocate Aurora Health
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Senior Systems Administrator
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Seeking a Senior Systems Administrator in Irvine to lead complex data center projects. This hands-on role requires deep expertise in VMware, Windows/Linux servers, storage, and scripting (PowerShell/Bash). You will collaborate with client teams and drive infrastructure initiatives from conception...
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United States , Irvine
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145000.00 - 165000.00 USD / Year
Megazone Cloud US
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Senior Systems Administrator
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Join Realta Fusion as a Senior Systems Administrator in Madison. Own and scale our IT infrastructure, managing Microsoft 365, endpoints, and cloud networks. We offer competitive pay, equity, comprehensive benefits, and a dynamic startup environment.
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United States , Madison
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Realta Fusion Inc.
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Senior Linux System/Network Administrator
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Seeking a Senior Linux System/Network Administrator in Annapolis Junction. This role requires an active TS/SCI clearance and a CI or FS polygraph. You will manage critical infrastructure in a secure environment. Join a team dedicated to high-impact national security missions.
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United States , Annapolis Junction
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Synergy ECP
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Senior Linux System/Network Administrator
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Seeking a Senior Linux System/Network Administrator with an active TS/SCI w/ Polygraph in Annapolis Junction. You will design and maintain a critical enclave, ensuring secure infrastructure, vulnerability management, and network administration. This role offers competitive compensation, comprehen...
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United States , Annapolis Junction
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220000.00 - 260000.00 USD / Year
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Synergy ECP
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Senior Linux System Administrator
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United States , Annapolis Junction
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Synergy ECP
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Senior Linux System Administrator
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Join Synergy ECP as a Senior Linux System Administrator in Annapolis Junction. This role requires 15 years of SA experience, expertise in Linux, Ansible, Kubernetes, and HCI solutions. A TS/SCI with Polygraph clearance is mandatory. We offer competitive pay, comprehensive benefits, flexible work,...
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United States , Annapolis Junction
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190000.00 - 220000.00 USD / Year
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Synergy ECP
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Senior Project Administrative Manager
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Join T5 Data Centers as a Senior Project Administrative Manager in Atlanta. Support large-scale data center construction by managing documentation, contracts, and financial processes. Requires 5+ years in construction admin and proficiency with tools like Procore. Be the critical operational part...
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United States , Atlanta
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T5 Data Centers
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Senior Office Administrator
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Join Boeing's BGS Commercial Modifications Engineering as a Senior Office Administrator in Long Beach, CA. You will coordinate team events, manage complex calendars, and process domestic/international travel. This role requires strong communication skills, 7+ years of experience, and proficiency ...
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United States , Long Beach
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77350.00 - 104650.00 USD / Year
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Boeing
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Grants Administrator Analyst Senior
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United States , Winston Salem
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35.50 - 53.25 USD / Hour
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Advocate Health Care
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Senior Systems Administrator
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Seeking a Senior Systems Administrator in Herndon, VA, for a critical mission operations team. This role requires an active TS/SCI with Polygraph and 5+ years' experience across Windows/Linux environments. You will administer infrastructure, ensure security, and solve complex technical problems. ...
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United States , Herndon
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168000.00 - 206000.00 USD / Year
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Boeing
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Senior Administrative Assistant
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Join our team in Atlanta as a Senior Administrative Assistant on a contract basis. Provide crucial support to our Facilities team, ensuring smooth office operations and a welcoming environment. This role requires strong organizational skills, proficiency in calendar management, and excellent comm...
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United States , Atlanta
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Robert Half
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Senior Administrative Assistant
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Join our Inspections team as a Senior Administrative Assistant in the Greater Philadelphia Region. This long-term contract role requires 3+ years of experience managing schedules, records, and detailed documentation. You will coordinate inspections, ensure compliance, and handle confidential data...
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United States , Greater Philadelphia Region
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Robert Half
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Senior Administrative Assistant
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Join our team in Princeton, NJ, as a Senior Administrative Assistant. This contract role requires a proactive professional skilled in calendar management, travel coordination, and administrative support. You will ensure smooth operations by handling correspondence, calls, and logistics. We offer ...
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United States , Princeton
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Robert Half
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Senior Administrative Assistant
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Seeking a Senior Administrative Assistant to provide exceptional support to executives in New York. This role requires 3+ years of experience, proficiency in Concur and Slack, and strong multitasking skills in a fast-paced financial environment. You will manage complex calendars, travel, and expe...
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United States , New York
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Robert Half
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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.

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