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Senior Administrator Jobs (On-site work)

146 Job Offers

Senior Administrator / Office Manager
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Seeking a highly organised Senior Administrator/Office Manager in Lutterworth. Provide confidential, high-level support, managing diaries, correspondence, and office systems. Requires excellent MS Office skills, a proactive approach to new tech, and a full UK driving licence. Benefits include a b...
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Location
United Kingdom , Lutterworth, Leicestershire
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Salary
35000.00 GBP / Year
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Office Angels
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Senior Network Administrator
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Lead and optimize enterprise network infrastructure as a Senior Network Administrator in Salem, Oregon. This role requires 5+ years' expertise with Cisco ecosystems, firewalls, and complex LAN/WAN management. You will ensure security, troubleshoot issues, and mentor a team while enjoying competit...
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Location
United States , Salem
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Salary
95000.00 - 105000.00 USD / Year
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Robert Half
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Database Administrator - Senior
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Join AnaVation as a Senior Database Administrator in Washington, DC. You will manage and optimize SQL Server environments, focusing on performance tuning, high availability, and security. This role requires deep DBA expertise, experience with Apache NiFi for data automation, and Windows Server ad...
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Location
United States , Washington, DC
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Salary
Not provided
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AnaVation
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Senior Linux Systems Administrator
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Seeking a Senior Linux Systems Administrator with an active Secret Clearance to support premier defense research in Lexington. This role requires 5+ years in Linux networking, scripting (Python/Ansible/Bash), and systems configuration. You will administer RHEL servers, optimize performance, and e...
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Location
United States , Lexington
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Not provided
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Aquila Technology
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Senior System Administrator
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Join Centrico's innovative fintech team as a Senior System Administrator in Biella, Italy. You will manage critical network infrastructure, including F5 load balancers and Checkpoint/Fortinet firewalls, and design Cloud/Hybrid Cloud (Azure) environments. This role requires strong problem-solving ...
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Location
Italy , Biella
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Not provided
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Centrico
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Senior System Administrator
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Join Centrico's innovative fintech team as a Senior System Administrator in Biella, Italy. You will manage critical network infrastructure, including F5 load balancers and Checkpoint/Fortinet firewalls, in Cloud/Hybrid environments. This role requires strong problem-solving skills, fluency in Eng...
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Location
Italy , Biella
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Not provided
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Centrico
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Senior Developer and Administrator
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Seeking a Senior OnBase Developer & Administrator in Columbus/Mason, Ohio. Design and administer OnBase solutions, leveraging 5+ years of CMS experience with on-premise and cloud implementations. Requires strong skills in C#, VB.NET, or Java for workflow customization and integration. Enjoy a fle...
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Location
United States , Columbus, Ohio / Mason, Ohio
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Salary
90000.00 - 120000.00 USD / Year
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DigiTech Partners
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Senior Systems Administrator
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Seeking a Senior Systems Administrator with an active TS/SCI clearance for a role in El Segundo. Manage and secure Windows servers/workstations in a classified environment, ensuring compliance and system integrity. This role offers company-paid benefits, a 401(k) with 6% company contribution, and...
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Location
United States , El Segundo
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Salary
120000.00 - 150000.00 USD / Year
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ExoAnalytic Solutions
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Senior Data Warehouse Administrator
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Join our team in Pune as a Senior Data Warehouse Administrator. You will architect and optimize large-scale data platforms, leveraging modern tools like Apache Iceberg and CDC. Your expertise in SQL tuning, data modeling, and pipeline management will be key. We seek a professional with 5-8 years ...
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Location
India , Pune
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Not provided
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FloQast
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Senior Systems Administrator
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Lead automation and modernization efforts as a Senior Systems Administrator in Annapolis Junction. This mission-critical role requires 10+ years of Linux/Ansible expertise and an active TS/SCI with Polygraph. You'll optimize secure IT systems, drive PKI/OCSP initiatives, and enjoy top-tier benefi...
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Location
United States , Annapolis Junction
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Salary
150000.00 - 250000.00 USD / Year
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LufCo
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Senior Administrator
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Join a dynamic small business in Cheadle as a Senior Administrator. Provide crucial PA and office management support to a driven CEO and her team. This varied role demands initiative, experience, and a hands-on approach. Enjoy benefits including life insurance, a taste card, and 23 days holiday.
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Location
United Kingdom , Cheadle
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32000.00 - 35000.00 GBP / Year
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Platinum Recruitment Group Ltd
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Temporary Senior Administrator
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Join a friendly academy finance team in Bradford as a Temporary Senior Administrator. Support during a busy period by processing invoices, expenses, and managing data entry. Requires accounts experience, strong organization, and IT literacy. Benefits include weekly pay, 28 days leave, and access ...
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Location
United Kingdom , Bradford
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Salary
13.50 - 14.00 GBP / Hour
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Office Angels
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Senior Systems Administrator
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Join Naughty Dog's IT team as a Senior Systems Administrator in Santa Monica. You will be the primary expert for our Windows/Linux infrastructure and core systems, supporting game development. Requires 10+ years in studio environments, expertise in Windows Server, Ubuntu, and deployment tools. Th...
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United States , Santa Monica
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Salary
149000.00 - 187200.00 USD / Year
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Naughty Dog
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Senior Support Administrator
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Join NTT DATA as a Senior Support Administrator in Petaling Jaya. This full-time, on-site role requires 2+ years' experience, advanced MS Office skills, and exceptional organization. Provide vital administrative support in a collaborative, global Top Employer environment that values growth and in...
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Malaysia , Petaling Jaya
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Not provided
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NTT DATA
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Senior Administrator - Professional Services
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Join our Leeds team as a Senior Administrator in Professional Services. You will deliver exceptional administrative support, from document production and client onboarding to event coordination. The role requires strong MS Office skills, attention to detail, and a proactive approach. Benefits inc...
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United Kingdom , Leeds
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Salary
28000.00 GBP / Year
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Office Angels
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Senior Network and Systems Administrator
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Seeking a Senior Network and Systems Administrator for a critical role at USSOCOM HQ on MacDill AFB, FL. This position requires 7+ years of network design/support experience, active Secret clearance, and IAT certification. You will manage secure LAN systems, ensure DISA compliance, and perform ke...
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United States , MacDill AFB, FL
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Not provided
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Delta Solutions & Strategies
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Senior Administrator
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Join a forward-thinking legal team in Exeter as a Senior Administrator. Utilize your strong organizational skills and attention to detail to provide comprehensive legal support and conduct research. Enjoy a vibrant workplace culture, private medical cover, and 25 days holiday plus bank holidays.
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Location
United Kingdom , Exeter
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Salary
35000.00 GBP / Year
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Office Angels
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Senior Linux System Administrator - Support Engineer
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Join our Canberra-based team as a Senior Linux System Administrator - Support Engineer. You will design, maintain, and optimize mission-critical Linux infrastructure and HPC clusters, ensuring high availability and performance. This on-site role requires 5+ years of Linux/HPC expertise, strong sc...
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Australia , Canberra
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Salary
Not provided
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Hewlett Packard Enterprise
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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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Location
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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Location
United States , Pleasant Prairie
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Salary
Not provided
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Sanmina
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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.