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Senior Administrator Jobs

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Senior IT Systems Administrator
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Senior IT Systems Administrator needed for a contract-to-permanent role in New York’s museum and art gallery sector. Leverage 5+ years of experience managing Slack, Google Workspace, Azure Sentinel, and Ubiquiti networks. Drive endpoint security, vendor management, and IT inventory while supporti...
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United States , New York
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Not provided
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Robert Half
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Senior Systems Administrator
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Senior Systems Administrator needed for a long-term contract in Fort Mill, SC. Leverage 5+ years of expertise in Active Directory, Microsoft 365, Azure, and Hyper-V/VMware to support 400 users across 22 locations. This onsite role offers hands-on work with Windows Server, SharePoint migrations, a...
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United States , Fort Mill
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Robert Half
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Senior Project Administrator
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Senior Project Administrator role in Pittsburgh, PA. Lead and mentor a project assistant team, collaborating with stakeholders to drive financial and operational success. Requires 5+ years of office management experience, construction process knowledge, and proficiency in Microsoft Office and acc...
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United States , Pittsburgh
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Robert Half
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Senior Systems Administrator
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Senior Systems Administrator needed in Jacksonville, FL to manage hybrid cloud and on-premises environments. Leverage 5–8+ years of expertise in Azure, O365, and Windows Server to ensure high availability and security. Responsibilities include administering cloud infrastructure, supporting enterp...
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United States , Jacksonville
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Robert Half
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Senior Administrator
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We are seeking a Senior Administrator to provide essential support to our Senior Leadership Team in Bordesley Green. This part-time role blends traditional and digital working, requiring strong organisational skills and discretion. Ideal candidates have PA or EA experience, with confidence in han...
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United Kingdom , Bordesley Green
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Not provided
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360 Resourcing Solutions
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Senior Administrator, Payroll
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Senior Payroll Administrator needed in Duluth, US. Audit multi-jurisdictional payroll data, correct pay errors, and provide expert customer service. Requires 3-5 years’ experience, strong Microsoft Office skills, and knowledge of HCM systems. Enjoy an employee assistance program and discount whil...
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United States , Duluth
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19.00 - 23.75 USD / Hour
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Chico's FAS, Inc.
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Senior Administrator, Payroll
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Senior Payroll Administrator needed in Fort Myers to lead multi-jurisdictional payroll processing with 3–5 years’ experience. You will audit timekeeping data, resolve pay discrepancies, and deliver exceptional customer service. Requires strong organizational skills, HCM expertise, and IRS tax kno...
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United States , Fort Myers
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19.00 - 23.75 USD / Hour
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Chico's FAS, Inc.
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Senior Systems Administrator (Linux)
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Senior Systems Administrator (Linux) sought to lead enterprise-level infrastructure for U.S. Navy operations in Waimea. Requires Top Secret clearance, RHCSA, and DoD 8570 IAT II certification. Manage RHEL environments, enforce RMF/NIST 800-53 compliance, and automate tasks using Bash, Python, and...
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United States , Waimea
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105000.00 - 145000.00 USD / Year
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Amentum
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Senior Email Security Administrator
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Senior Email Security Administrator sought in Vilnius, Lithuania, to lead enterprise email security programs. This role requires 7+ years of cybersecurity experience with deep expertise in Mimecast, Proofpoint Tessian, and Microsoft 365. You will design secure email gateways, combat phishing and ...
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Lithuania , Vilnius
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3000.00 - 4583.00 EUR / Month
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Alter Domus
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Senior Contract Administrator
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Senior Contract Administrator role with a leading Tier 1 Australian infrastructure provider in Melbourne’s Northern Suburbs. Manage contract lifecycles, procurement, and cost optimization on large-scale utilities projects. Requires 6+ years’ experience, tertiary qualifications, and expertise in h...
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Australia , Melbourne
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Randstad
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Senior Administrator
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Senior Administrator role in Central London supporting construction and building services projects. Act as key liaison between internal teams and external contractors, managing documentation, compliance, and scheduling. Requires strong organisational skills, Microsoft Office proficiency, and prev...
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United Kingdom , City Of London
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15.00 GBP / Hour
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Office Angels
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Senior Administrator
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Seeking a proactive **Senior Administrator** for a permanent, full-time role at **HMP Oakwood** in Wolverhampton. You will provide vital administrative support in a fast-paced prison education environment. Requires Level 2 Literacy/Numeracy, strong IT skills, and experience with accurate data man...
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United Kingdom , Wolverhampton
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25877.80 - 27041.04 GBP / Year
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Novus
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Senior Business Administration Analyst
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Senior Business Administration Analyst sought by RGA, a Fortune 200 global reinsurance leader. Leverage your 4-5 years of financial industry experience and advanced skills in SQL, Python, and automation tools to streamline operational processes in Bangsar, Kuala Lumpur. Drive efficiency by optimi...
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Malaysia , Bangsar, Wilayah Persekutuan Kuala Lumpur
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Not provided
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Reinsurance Group of America
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Senior Email Security Administrator
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Senior Email Security Administrator sought to lead email security programs in Cork or Dublin, Ireland. This role requires 7+ years of cybersecurity experience with deep expertise in Mimecast and Proofpoint Tessian. You will design, implement, and optimize secure email gateways, protect against ph...
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Ireland , Cork; Dublin
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Not provided
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Alter Domus
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Senior IT Support Administrator
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Senior IT Support Administrator sought for a permanent role in Athens’ northern suburbs with a leading pharmaceutical firm. Leverage 3+ years of experience in Active Directory, Azure, Microsoft 365, and Windows Server to maintain infrastructure, secure cloud services, and support daily operations...
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Greece , Athens
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Not provided
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Randstad
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Senior Database Administrator
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Senior Database Administrator needed in Mumbai for a hybrid role at NTT DATA. Manage complex SQL Server, Oracle, and MySQL systems, ensuring high availability and performance. Requires 7+ years of DBA experience, a bachelor's degree, and expertise in backup/recovery. Certifications like MCSE DBA ...
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India , Mumbai
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NTT DATA
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Senior Contract Administrator
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Senior Contract Administrator role in Brisbane with a high-retention Tier 2 builder specializing in Education and Aged Care. You will own procurement, subcontract management, and mentor one CA on realistic, well-funded projects. Requires 4+ years in Australian commercial construction with proven ...
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Australia , Brisbane
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Not provided
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Randstad
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Senior GRC Systems Administrator
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Senior GRC Systems Administrator sought to configure and optimize the RSA Archer platform in Vilnius, Lithuania. You will build data models, design workflows, and support risk, compliance, and third-party risk management. Ideal candidates have strong GRC platform expertise and problem-solving ski...
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Lithuania , Vilnius
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Not provided
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Alter Domus
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Senior Applications Administrator - SQL Server - SSMS - SSIS
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Senior Applications Administrator with 5+ years of experience in SQL Server, SSMS, and SSIS needed to lead technical Data Management initiatives. This role focuses on end-to-end project execution, troubleshooting, and cross-team coordination rather than heavy development. Ideal for a self-suffici...
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United States
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Not provided
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Zeektek
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Senior Systems Administrator
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Senior Systems Administrator needed in Aurora, CO, to support critical Intelligence Community missions. This role requires 10+ years of SA experience, a TS/SCI with Full Scope Polygraph, and expertise in Tier 1/2 support, system optimization, and troubleshooting. Join a collaborative, zero-bureau...
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United States , Aurora
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Not provided
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Riverstone Enterprise 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.

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