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Senior Administrator United States Jobs

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Senior Administrative Assistant
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Provide high-level executive support in a fast-paced Manhattan office. This senior role requires exceptional organizational skills, confidentiality, and 3-6+ years of experience. Enjoy top benefits including 100% paid medical, generous PTO, 401(k), and bonus potential.
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United States , New York
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85000.00 - 90000.00 USD / Year
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Beacon Hill
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Senior Capital Administrator
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Seeking a Senior Capital Administrator in New York or Chicago. You will manage capital allocations for private equity funds, serving as the client relationship lead and subject matter expert. This role requires strong GAAP knowledge, advanced Excel skills, and private equity experience. We offer ...
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United States , New York; Chicago
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85000.00 - 110000.00 USD / Year
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Alter Domus
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Senior Stock Plan Administrator
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Seeking a Senior Stock Plan Administrator to manage global equity programs end-to-end. This critical San Francisco/New York/Portland-based role requires 5+ years' experience, deep ASC 718/409A knowledge, and platform expertise (e.g., Carta). You'll ensure compliance, lead system migrations, and p...
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United States , San Francisco; New York; Portland
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138800.00 - 192800.00 USD / Year
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Mercury
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Senior Administrative Assistant / Executive Assistant
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Seeking a seasoned Senior Administrative Assistant with REQUIRED senior living industry experience. Provide high-level, onsite support to the CEO, CFO, and COO in Kearny Mesa. Manage executive priorities, calendars, travel, and corporate office operations with utmost discretion. This key role off...
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United States , San Diego, CA
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Not provided
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Robert Half
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Senior Administrative Associate
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Join a leading Boston medical institution in this temporary Senior Administrative Associate role. Support a specialized clinical department with financial reconciliation, data management, and confidential recordkeeping. This onsite position requires 3+ years of admin experience, ideally in health...
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United States , Boston
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24.00 - 28.00 USD / Hour
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Beacon Hill
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Senior Administrative Associate
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Join a leading Boston medical institution as a temporary Senior Administrative Associate. This 3-6 month, onsite role supports a specialized clinical department, requiring 3+ years of admin experience. You will manage financial reconciliation, sensitive records, and program coordination in a fast...
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United States , Boston
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24.00 - 28.00 USD / Hour
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Beacon Hill
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Senior Systems Administrator
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Join Geonetric as a Senior Systems Administrator in Cedar Rapids. You will manage and improve critical IT systems including Office 365, SaaS apps, and hybrid AAD/Entra ID environments. This role requires 5+ years of experience, proficiency in desktop support, and expertise in Active Directory and...
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United States , Cedar Rapids
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Not provided
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Geonetric
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Senior Quality Training Administrator
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Seeking a Senior Quality Training Administrator in Pleasant Prairie, USA. You will design and lead quality training programs, ensuring compliance with standards like ISO and IPC-A-610. Requires 4+ years' experience, expertise in quality systems, and strong facilitation skills. Must be a US Citize...
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United States , Pleasant Prairie
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Not provided
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Sanmina
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Senior Administrative Assistant
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Seeking a highly organized Senior Administrative Assistant for a contract-to-hire role in Columbus, Ohio. You will manage front office operations, coordinate meetings, and handle critical documentation. This role offers comprehensive benefits and requires proven skills in administrative support a...
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United States , Columbus
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Not provided
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Robert Half
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Senior Administrative Assistant
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Join a leading San Diego biotech firm as a Senior Administrative Assistant. Provide high-level support to executives, managing complex calendars, travel, and confidential scientific data. Requires 4+ years' admin experience, preferably in life sciences, with advanced MS Office skills. Enjoy compr...
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United States , San Diego
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Not provided
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Robert Half
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System Administrator, Senior
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Seeking a Senior System Administrator in Columbia, MD, to design and maintain critical Cross Domain Solutions. Requires TS/SCI clearance, 5+ years' experience with Linux (RHEL/CentOS), VMware, and networking. This role offers competitive benefits and the chance to support vital national cybersecu...
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United States , Columbia
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77600.00 - 176000.00 USD / Year
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Booz Allen Hamilton
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Senior Systems Administrator
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Seeking a Senior Systems Administrator in Annapolis Junction to manage and maintain critical IT infrastructure. This role involves troubleshooting, system monitoring, and resolving issues across client/server/storage/network devices. Requires 15 years of SA experience and expertise in both UNIX a...
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United States , Annapolis Junction
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Not provided
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2HB
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Senior Administrative Specialist
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Seeking a Senior Administrative Specialist in San Antonio, TX, supporting critical cyber systems. This role requires an active Top Secret clearance and 5+ years of DoD administrative experience. You will provide direct staff support to senior leadership, ensuring mission success. We offer competi...
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United States , San Antonio, Texas
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Astrion
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Senior Administrative Assistant
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Join Capital One as a Senior Administrative Assistant in Stamford. Support 4-6 executives in a dynamic, tech-savvy environment, managing calendars, travel, and key events. Requires 2+ years of admin experience and proficiency in Microsoft/Google suites. Enjoy comprehensive benefits in this pivota...
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United States , Stamford
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88200.00 - 100700.00 USD / Year
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Capital One
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Senior Database Administrator
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Seeking a Senior Database Administrator with Top Secret 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 and Security+ certifications and offers robust benefits ...
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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 Remedy Database Administrator
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Seeking a Senior Remedy Database Administrator with an active TS clearance for a role at Fort Belvoir. You will administer and secure Remedy/SQL databases across multiple environments, ensuring performance and integrity. This position requires MCSA: SQL Server and Security+ certifications. We off...
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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 z/OS Mainframe Systems Administrator
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Join our team as a Senior z/OS Mainframe Systems Administrator in Austin. You will support mission-critical systems, leveraging deep expertise in z/OS, TSS security, JES2, and performance monitoring (RMF/SMF). This role requires 8+ years with Top Secret Security and strong skills in TLS, networki...
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United States , Austin
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Not provided
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Dutech Systems
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Senior Administrative Assistant (Administrative Support Assistant III) - Technology
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Join Capital One as a Senior Administrative Assistant supporting 4-6 tech executives in McLean, San Francisco, or San Jose. You'll manage complex calendars, coordinate travel/events, and ensure seamless operations in a fast-paced environment. This role requires 2+ years of admin experience, MS Of...
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United States , McLean; San Francisco; San Jose
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80900.00 - 100700.00 USD / Year
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Capital One
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Senior Administrative Assistant
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Seeking a proactive Senior Administrative Assistant to support executives in Del Mar, CA. This high-visibility role requires 4+ years of C-suite support, expert MS Office skills, and exceptional organization. Manage complex calendars, travel, and communications in a fast-paced environment. We off...
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United States , Del Mar
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Not provided
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Robert Half
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Senior Administrative Assistant
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Seeking a skilled Senior Administrative Assistant to provide high-level office support in San Antonio. This role requires 3+ years of secretarial experience, with a preference for a hospital setting and relevant certification or degree. You will deliver essential administrative services in a dyna...
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United States , San Antonio
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19.05 - 26.75 USD / Hour
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University Health
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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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