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Senior Administrator Jobs (On-site work)

176 Job Offers

Senior Administrator
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Join a purpose-driven non-profit in Coventry as a Senior Administrator. Provide high-level support to the CEO, managing diaries, travel, and key meetings. This full-time role requires strong organisation, MS Office skills, and offers a chance to assist with new AI technology integration. Salary £...
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United Kingdom , Coventry
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25000.00 - 30000.00 GBP / Year
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Office Angels
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Senior Linux System Administrator - Support Engineer
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Join our HPC support team in Canberra as a Senior Linux System Administrator. You will design, maintain, and optimize mission-critical Linux and HPC infrastructure, ensuring high availability and performance. Utilize your expertise in scripting, automation, and parallel file systems to provide ad...
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Australia , Canberra
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Not provided
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Hewlett Packard Enterprise
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Senior Administrator
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Seeking a Senior Administrator in Chelmsford to oversee a busy repairs and service contract department. This pivotal role requires strong contract administration, negotiation skills, and CRM proficiency. You'll ensure seamless operations and deliver exceptional customer service. Benefits include ...
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Location
United Kingdom , Chelmsford
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Salary
32000.00 GBP / Year
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Office Angels
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PA / Senior Administrator
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Join a thriving Accountancy Practice in Lutterworth as a PA/Senior Administrator. You will provide crucial support to Directors and the Senior Management Team, managing complex diaries, travel, and correspondence. The role requires outstanding organisation, strong MS Office skills, and the abilit...
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United Kingdom , Lutterworth
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35000.00 - 37000.00 GBP / Year
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Office Angels
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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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United Kingdom , Lutterworth, Leicestershire
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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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United States , Salem
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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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United States , Washington, DC
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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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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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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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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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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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United States , El Segundo
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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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India , Pune
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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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United States , Annapolis Junction
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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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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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Senior Project Administrative Manager
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Join T5 Data Centers as a Senior Project Administrative Manager in Atlanta. Support large-scale data center construction by managing documentation, contracts, and financials. Requires 5+ years in construction admin and proficiency with tools like Procore. Be the critical operational partner for o...
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United States , Atlanta
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Not provided
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T5 Data Centers
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Senior Associate Corporate Card Administration
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Join Amgen's global finance team in Hyderabad as a Senior Associate for Corporate Card Administration. Utilize your 3+ years of financial operations experience to manage card programs and provide exceptional customer service. You will ensure process accuracy, resolve queries, and support internal...
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India , Hyderabad
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Not provided
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Amgen
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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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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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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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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.