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Senior Administrator Jobs

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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 Administrative Assistant
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Seeking a Senior Administrative Assistant in Bethesda to support the Chief Franchising Officer. This role requires 5+ years of executive support experience, advanced MS Office skills, and exceptional organizational abilities. You will manage complex calendars, prepare executive materials, and ens...
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United States , Bethesda
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24.85 - 42.69 USD / Hour
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Marriott Bonvoy
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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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Not provided
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Realta Fusion Inc.
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Senior SQL Database Administrator – Great Plains General Ledger Administration
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United States , Atlanta
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Not provided
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Abotts
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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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Not provided
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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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Not provided
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T5 Data Centers
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Senior Associate, Retirement Plan Administration (Testing)
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United States
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80000.00 - 90000.00 USD / Year
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Fin Capital
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Senior Associate, Retirement Plan Administration (Audit)
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Join Vestwell's Retirement Plan Administration team as a Senior Associate focused on audit and large plans. Utilize your 4+ years of experience in qualified plan administration, compliance testing, and IQPA audits. Enjoy competitive benefits, a hybrid work model, and act as an internal subject ma...
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United States
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80000.00 - 90000.00 USD / Year
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Fin Capital
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Senior Salesforce Administrator
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Lead our Salesforce platform as a Senior Administrator in Berlin. You'll ensure scalability and performance for Sales and Service Cloud using Flows, Validation Rules, and data architecture. Collaborate with a cross-functional team in a hybrid model, driving renewable energy innovation at a fast-g...
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Germany , Berlin
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Not provided
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enpal
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Senior Administrative Assistant
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Germany , Büttel
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Not provided
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McDermott
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Senior Pensions Administrator
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Join a leading pensions consultancy in Reading as a Senior Pensions Administrator. This role requires strong Defined Benefit (DB) expertise, complex manual calculations, and mentoring junior colleagues. You will deliver first-class service within a supportive, quality-driven team. The position of...
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United Kingdom , Reading
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38000.00 - 40000.00 GBP / Year
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Social Value Portal Ltd
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Senior M&A Administrator
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Join our growing M&A Team as a Senior Administrator in Staffordshire. You will oversee integration projects, liaise with third parties, and manage team logistics. We seek a proactive, highly organised professional with outstanding communication skills. Enjoy benefits like a holiday purchase schem...
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United Kingdom , Staffordshire
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Perspective Financial Group Ltd
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Administrative Financial Analyst Senior
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Seeking a Senior Administrative Financial Analyst to develop capital plans, manage budgets, and report on variances for a US healthcare organization. This role requires a Bachelor's degree and 5+ years of healthcare finance experience. You will support multi-facility operations, implement policie...
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United States
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41.10 - 61.65 USD / Hour
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Advocate Health Care
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Senior Administrative Assistant
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United States , Baltimore
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Not provided
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Robert Half
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Senior Administrative Assistant
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United States , Bedford Park
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25.00 USD / Hour
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Robert Half
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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 Client Administrator
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United Kingdom , Manchester
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30000.00 - 35000.00 GBP / Year
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Platinum Recruitment Group Ltd
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Senior Legal Administrative Assistant - US/CAN Development Transactions
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Join Marriott's US/CAN Development Transactions team as a Senior Legal Administrative Assistant in Bethesda. Provide crucial administrative support with five years' experience, advanced MS Office skills, and meticulous proofreading. Enjoy comprehensive benefits including medical coverage, 401(k),...
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United States , Bethesda
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27.35 - 46.20 USD / Hour
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Marriott Bonvoy
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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.

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