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Senior Administrator Jobs

391 Job Offers

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Senior Sales Administrative Assistant
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Join Marriott Hotels in Orlando as a Senior Sales Administrative Assistant. You will manage databases, prepare documents, and handle office systems to support our sales operations. This role offers training, development, and recognition in a luxury environment focused on well-being. Utilize your ...
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United States , Orlando
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Marriott Bonvoy
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Senior System Administrator / System Engineer - Linux
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Seeking a Senior Linux System Administrator/Engineer for a mission-critical Intelligence Community role in Annapolis Junction. Requires 10+ years' expertise with RHEL/CentOS, VMware, JBoss/WildFly, Ansible, and scripting. Active Security Clearance with Polygraph and Security+ certification are ma...
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United States , Annapolis Junction
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Columbia Technology Partners
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Senior System Administrator / System Engineer - Linux
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Seeking a Senior Linux System Administrator/Engineer for a mission-critical Intelligence Community role in Annapolis Junction. This position requires 10+ years of Linux expertise (CentOS/RHEL), VMware, Ansible, and an active Security Clearance. Enjoy top-tier benefits including a 6% 401k match, c...
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United States , Annapolis Junction
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Columbia Technology Partners
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Senior Systems Administrator
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Seeking a Senior Systems Administrator in Surprise, USA. Lead critical IT infrastructure, including VMware, SAN storage, and Microsoft Exchange. Requires 5+ years' experience with Linux, Active Directory, and PowerShell automation. Competitive benefits include medical, dental, vision, and a 401(k...
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United States , Surprise
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Robert Half
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Senior IT Security Administrator
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Join Palladyne AI as a Senior IT Security Administrator. This role requires an active U.S. Security Clearance and 7+ years in IT security, focusing on NIST/CMMC frameworks and incident response. You will administer critical security systems and ensure compliance in a fast-paced, innovative enviro...
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Palladyne AI
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Principal Engineer I – Senior Azure Databricks Administrator
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Lead the Azure Databricks platform for a major corporation in Phoenix, AZ. This senior role requires 8+ years in data analytics and deep expertise in Azure Databricks, Unity Catalog, and PySpark. Enjoy a competitive package with ownership stake, great benefits, and a hybrid schedule (4 days on-si...
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United States , Phoenix
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Software Resources
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System Administrator Senior
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Seeking a Senior System Administrator to support HPC and data analytics for a critical research lab. This role requires extensive Linux/Windows expertise, TS/SCI clearance with polygraph, and 8+ years of lead experience. You will design, maintain, and optimize cutting-edge systems in a mission-fo...
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United States , Catonsville
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77600.00 - 176000.00 USD / Year
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Booz Allen Hamilton
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Senior Asset Services Administrator
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Join Capital International as a Senior Asset Services Administrator in Douglas, Isle of Man. You will deliver outstanding client service, processing dividends, corporate actions, and asset transfers. The role requires strong organizational skills, attention to detail, and proficiency in Microsoft...
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Isle of Man , Douglas
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Capital International
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Senior Administration Officer and Exams support
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Seeking a Senior Administration Officer and Exams support professional for our Maidstone Campus. This permanent, term-time role involves overseeing campus administration, financial processes, and exam support while managing staff. We offer a competitive salary, pension, strong career progression,...
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United Kingdom , Maidstone
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360 Resourcing Solutions
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Senior Executive Administrator
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Seeking a part-time Senior Executive Administrator for a temporary, onsite role in Waltham, MA. Provide high-level support to finance and investment leadership, managing calendars, correspondence, and projects. Requires 5-8+ years of executive admin experience, discretion with confidential data, ...
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United States , Waltham
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35.00 USD / Hour
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Beacon Hill
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Subcontract Administrator Senior
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Seeking a Senior Subcontract Administrator in Westminster to manage complex supplier relationships and strategic sourcing. You will prepare bid packages, evaluate proposals, and oversee subcontracts (Fixed Price, Cost Reimbursable). Requires a Bachelor's degree, 4+ years of experience, and FAR/DF...
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United States , Westminster
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82779.00 - 140723.00 USD / Year
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Baesystems
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Senior Linux System Administrator (L3)
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Seeking a seasoned Senior Linux System Administrator (L3) in Irving, US. You will own stability and performance of large-scale Linux environments, requiring deep expertise in Veritas Clustering (VCS), SAN/NAS storage, and advanced troubleshooting. The role involves leading critical incident resol...
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United States , Irving
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120000.00 USD / Year
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Realign
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Senior Administrative Assistant
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Seeking a bilingual Senior Administrative Assistant in Dorval. Support Supply Chain leadership with Ariba procurement, complex scheduling, and document preparation. Requires 8+ years' experience, fluency in French/English, and advanced MS Office skills. We offer competitive salary, comprehensive ...
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Canada , Dorval
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Bombardier
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Senior Database Administrator
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Seeking a Senior Database Administrator in Melbourne to manage high-availability Oracle & SQL Server environments. You will need 10+ years of enterprise experience with RAC, Data Guard, AlwaysOn, performance tuning, and cloud platforms. This role involves ensuring database security, leading migra...
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Australia , Melbourne
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Salt
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Senior Jira Administrator
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Seeking a Senior Jira Administrator in Austin to manage our enterprise Jira Cloud environment. You will configure projects, build advanced JQL queries, and develop integrations via REST APIs. The role requires 8+ years of Jira expertise, including plugins like ScriptRunner and reporting with Powe...
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United States , Austin
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Dutech Systems
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Payroll Senior Administrator
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Seeking an experienced Payroll Senior Administrator for a hybrid role in Northwich. Process end-to-end payrolls using Sage 50/BrightPay, ensuring compliance with legislation. Enjoy a supportive team, generous benefits, and flexible full/part-time hours in this progressive firm.
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United Kingdom , Northwich
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30000.00 - 33000.00 GBP / Year
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Butler Rose
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Senior Administrative Assistant
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Seeking a Senior Administrative Assistant in Baltimore to provide high-level support in a nonprofit setting. This role requires 3-5+ years of experience, proficiency in CRM systems, and expertise in grant processes. You will manage executive schedules, board communications, and office operations....
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United States , Baltimore
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Not provided
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Robert Half
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Senior Systems and Network Administrator
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Lead major cloud and infrastructure modernization in Providence. This senior role requires deep expertise in Windows Server, Active Directory, networking (Cisco/Meraki), and Azure migration. You will own projects end-to-end, partnering with an MSP during transition. We offer full benefits includi...
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United States , Providence
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Robert Half
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Senior Administrator
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Join a leading construction consultancy as a Senior Administrator in Oxford. Provide vital administrative support, manage documentation, and coordinate meetings in a dynamic environment. This role offers flexible working, a competitive salary, and professional development opportunities.
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United Kingdom , Witney, Oxfordshire
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28000.00 - 35000.00 GBP / Year
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Brandon James
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Senior Administrator
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Join a leading national construction consultancy in Oxford as a Senior Administrator. Provide high-quality administrative support, manage documentation, and coordinate meetings in a dynamic environment. This role offers flexible working, a competitive salary, and excellent benefits for an organis...
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United Kingdom , Oxford
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28000.00 - 35000.00 GBP / Year
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Brandon James
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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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