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Senior Administrator Jobs (On-site work)

178 Job Offers

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Senior Contracts Administrator
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Australia , Munster
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Not provided
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Adbri Concrete
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Contracts Administrator - Senior
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Senior Contracts Administrator needed for NSW Transport & Infrastructure team in Macquarie Park, Sydney. Leverage 2-3 years’ civil engineering experience to manage contract negotiations, subcontracts, and cost control on long-term, high-impact projects. Enjoy a metro-based role with competitive r...
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Australia , Sydney
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Not provided
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Ertech
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Senior Administrative Assistant (Administrative Support Assistant III) - Tech HR Consulting
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Senior Administrative Assistant (Support Assistant III) supporting Tech HR Consulting at Capital One in McLean or Richmond, VA. Manage complex calendars for executives, coordinate travel, and drive team events in a fast-paced environment. Requires 2+ years of admin experience and Microsoft Office...
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United States , McLean, Virginia; Richmond, Virginia
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80900.00 - 92300.00 USD / Year
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Capital One
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Senior Contract Administrator
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Senior Contract Administrator role in Adelaide, Australia, offering intellectual leadership beyond standard delivery. You’ll mentor junior staff, manage high-value projects, and ensure commercial rigor with 8+ years in Australian construction. Key skills include contract administration, risk miti...
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Australia , Adelaide
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120000.00 - 160000.00 AUD / Year
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Randstad
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Senior Database Administrator
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Senior Database Administrator needed for an 11-month onsite contract in Toronto. You will lead Oracle E-Business Suite upgrades from 19c to 26ai, perform performance tuning in multi-node RAC environments, and deploy Oracle Access Governance. Requires expert-level knowledge of Oracle 26ai, RMAN ba...
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Canada , Toronto
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Not provided
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Randstad
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Senior Administrative Assistant
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Seeking a detail-oriented **Senior Administrative Assistant** for a contract-to-permanent role in **Baltimore, Maryland**. You will manage work orders, coordinate schedules, and support key stakeholders using **Microsoft Office Suite** and **Computerized Maintenance Systems**. Ideal candidates po...
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United States , Baltimore
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Not provided
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Robert Half
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Senior Network Administrator
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Senior Network Administrator needed for a long-term contract in Portland, Oregon. This role demands deep expertise in Cisco routing, Fortinet firewall administration, and SD-WAN management within complex enterprise environments. You will ensure network stability, security, and performance while s...
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United States , Portland
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Robert Half
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Senior Administrator / Office Manager
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Senior Administrator / Office Manager sought for a professional firm in Lutterworth. You will support the Senior Management Team in a team-oriented environment, handling complex enquiries, reports, and correspondence. Advanced Excel and Word skills are essential, along with experience in Legal, A...
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United Kingdom , Lutterworth
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32000.00 - 35000.00 GBP / Year
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Office Angels
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Senior Systems Operations Engineer - CI/CD Administration
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Wells Fargo seeks a Senior Systems Operations Engineer in Bengaluru to lead CI/CD administration and infrastructure management. You will leverage 4+ years of experience in Python, Docker, Kubernetes, and monitoring tools like Splunk and Grafana. This role focuses on automating operations, enhanci...
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India , Bengaluru
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Wells Fargo
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Senior Administrative Assistant
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Senior Administrative Assistant needed for a permanent, on-site role in Orlando supporting a busy engineering office. Ideal for candidates with 3+ years of administrative experience, strong technical document formatting skills, and proficiency in Microsoft Office 365 and Adobe. Must have 50+ WPM ...
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United States , Orlando
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Robert Half
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Senior Systems Administrator
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Senior Systems Administrator needed onsite in Aurora, CO, to support critical Intelligence Community missions. This role requires 10+ years of experience, a TS/SCI with Full Scope Polygraph, and expertise in UNIX/Windows systems. You will provide Tier 1-2 support, optimize system performance, and...
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United States , Aurora
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155000.00 - 175000.00 USD / Year
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Riverstone Enterprise Solutions
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Senior Application Administrator - Workday Integrations
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Senior Application Administrator - Workday Integrations role in Miramar, FL. Design, develop, and debug complex integrations (EIB, Studio, CCW) for HCM, Finance, and Payroll. Requires 5+ years of experience and expertise in end-to-end application management. Join a collaborative team driving secu...
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United States , Miramar
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Not provided
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Memorial Healthcare System
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Senior Customer Services Administrator
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Isle of Man , Castletown
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Not provided
International Financial Group Ltd
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Senior Client Operations Administrator
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United Kingdom , Wellington
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35000.00 - 40000.00 GBP / Year
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Office Angels
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Temporary FTC Senior Administrator - Finance Duties
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United Kingdom , Wakefield
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18.10 GBP / Hour
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Office Angels
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Senior Administrative Assistant
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United States , Bedford
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80000.00 - 100000.00 USD / Year
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Beacon Hill
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Senior Application Administrator - Inpatient Pharmacist
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Senior Application Administrator and Inpatient Pharmacist needed in Miramar, FL. Manage and configure the pharmacy application for Memorial Healthcare System, handling end-to-end design, testing, and installation. Requires a Florida Pharmacist License, 5+ years of experience, and strong critical ...
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United States , Miramar
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Not provided
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Memorial Healthcare System
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Senior Administrative Assistant (Administrative Support Assistant III) Enterprise Payments
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Capital One seeks a Senior Administrative Assistant (Administrative Support Assistant III) to support 4-6 executives in McLean or Richmond, VA. You will manage complex calendars, coordinate travel, and plan team events in a fast-paced, tech-savvy environment. Requires 2+ years of administrative e...
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United States , McLean, Virginia; Richmond, Virginia
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80900.00 - 92300.00 USD / Year
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Capital One
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Senior Administrative Assistant
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United States , Key Biscayne
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Marriott Bonvoy
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Senior Database Administrator
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Senior Database Administrator sought in Manchester to deliver secure, scalable, high-performance database services. Requires deep expertise in MariaDB/MySQL, Linux, and automation tools like Ansible or Terraform. You will optimise performance, manage high availability, and collaborate with DevOps...
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United Kingdom , Manchester
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60000.00 - 75000.00 GBP / Year
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360 Resourcing Solutions
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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.