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Senior Administrator Jobs (On-site work)

149 Job Offers

Senior Finance & Data Administrator
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Ireland , Dublin
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Not provided
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JLL
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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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Temporary Senior Administrator
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United Kingdom , Shipley
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15.60 GBP / Hour
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Office Angels
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Senior Team Administrator
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Join a respected, employee-owned brokerage as a Senior Team Administrator in London. Provide crucial support to brokers and executives, managing meetings, travel, and key documents. This role requires exceptional organisation, discretion, and a proactive approach. Enjoy outstanding benefits inclu...
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United Kingdom , London
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40000.00 - 45000.00 GBP / Year
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Office Angels
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Temporary Senior Administrator / Supervisor
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United Kingdom , Glasgow
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14.00 - 15.00 GBP / Hour
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Office Angels
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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 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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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 Sales Administrator
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Join a growing technology business as a Senior Sales Administrator in Woking. Provide crucial support to the sales team, managing CRM data, order processing, and customer enquiries. This office-based role requires strong organisational skills, CRM proficiency, and offers a supportive team environ...
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United Kingdom , Woking
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30000.00 - 35000.00 GBP / Year
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Social Value Portal Ltd
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Senior Database Administrator
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Seeking a Senior Database Administrator with an active TS clearance for a role at Fort Belvoir. You will manage MS SQL Server infrastructure, including clustering and replication, ensuring performance and security. This position requires MCSA: SQL Server and Security+ certifications, offering com...
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United States , Fort Belvoir
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Chickasaw Nation Industries, Inc (CNI)
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Senior Remedy Database Administrator
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Seeking a Senior Remedy Database Administrator with an active Top Secret clearance for a role at Fort Belvoir. You will provide expert administration, ensuring performance, integrity, and security across all environments. This position requires MCSA: SQL Server and Security+ certifications, and o...
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United States , Fort Belvoir
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Chickasaw Nation Industries, Inc (CNI)
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Temporary to Permanent Senior Administrator
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Join a well-established family business in Bridgwater as a Senior Administrator. This temp-to-perm role requires strong Sage/Xero skills for sales ledger duties and administrative support. Enjoy weekly pay, retail discounts, and a supportive team environment in this key operational position.
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United Kingdom , Bridgwater
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29000.00 - 32000.00 GBP / Year
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Office Angels
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Senior Administrator
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Join STERIS in Westport as a Senior Administrator, supporting our plant team with key secretarial and administrative duties. This role requires strong communication skills, proficiency in MS Office, and the ability to work independently. You will lead continuous improvement initiatives and help c...
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Ireland , Westport
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STERIS
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Senior Database Administrator (MariaDB)
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Join our international team in Katowice as a Senior MariaDB Database Administrator. You will ensure secure, high-performance database environments, handling migrations, automation, and complex troubleshooting. We seek an expert in scalable MariaDB/MySQL with strong English skills. Enjoy comprehen...
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Poland , Katowice
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Sopra Steria
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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.