25 of 25 Senior Systems Administrator Jobs in the UK

Senior Business Systems Administrator - Business Systems, ERP, CRM, NetSuite, Salesforce, Integrations, Automation, API, SaaS Applications, Systems Administration, Business Applications, Process Improvement, Stakeholder Management, Change & Transformation, Configuration, Troubleshooting, Data Governance, Security, Access Management, SuiteScript, SQL, Celigo, Boomi, MuleSoft, Dynamics 365, Oracle, SAP, Workday … Business Systems Manager, Applications Manager, Enterprise Applications, Technical Support, Platform Ownership, System Enhancements - Sheffield - £65,000 - £70,000 Our client is seeking a Senior Business Systems Administrator to support and enhance a range of business-critical applications. The role will focus on systems ...

Senior Business Systems Administrator – Business Systems, ERP, CRM, NetSuite, Salesforce, Integrations, Automation, API, SaaS Applications, Systems Administration, Business Applications, Process Improvement, Stakeholder Management, Change & Transformation, Configuration, Troubleshooting, Data Governance, Security, Access Management, SuiteScript, SQL, Celigo, Boomi, MuleSoft, Dynamics 365, Oracle, SAP, Workday … Business Systems Manager, Applications Manager, Enterprise Applications, Technical Support, Platform Ownership, System Enhancements – London – £65,000 – £70,000 Our client is seeking a Senior Business Systems Administrator to support and enhance a range of business-critical applications. The role will focus on systems ...

Senior IT Systems Administrator (Linux & HPC)KBR is a global provider of differentiated, professional services and technologies delivered across a wide government, defense and industrial base. Drawing from its rich 100-year history and culture of innovation and mission focus, KBR creates sustainable value … operations and maintenance services to ensure consistent delivery with predictable results. At KBR, We Deliver.KBR is looking for a Senior IT Systems Administrator (Linux & HPC).**The Opportunity:**The Senior IT Systems Administrator (Linux & HPC) is responsible ...

more open, accountable internet. That is what drives the work we do. About the Position We're seeking a Senior Systems Administrator to keep our company running smoothly. The ideal candidate is a level-headed, hands-on specialist with deep experience configuring, managing … improvements Develop and maintain technical roadmaps aligned with business goals, collaborating with leadership to prioritize initiatives Design, implement, and continuously improve automated provisioning and systems management pipelines (CI/CD for IT tooling, endpoint management) Research and evaluate new technologies, tools, and vendors; lead proof-of-concept efforts ...

delighted to be working in partnership with an established market leader in managed communications technology and systems integration who develop their own products. For over 40 years, they’ve been at the forefront of innovation, transforming customer experiences through smarter communications, automation, analytics and AI. They deliver transformative communication … expands, they are looking to onboard a DevOps SysAdmin to support teams across the business for both internal and hosted infrastructures including hardware, operating systems and server-based applications. As a Senior DevOps Systems Administrator, you’ll lead automation efforts, work with cutting ...

Senior DevOps Systems Administrator Guildford -1 day a month on-site £60,000 - £65,000 + Private Medical Insurance + Holiday + Pension This is an excellent opportunity for an experienced DevOps Systems Administrator looking to take ownership of complex cloud ...

Senior IT Systems Administrator £33,000 - £38,000 Middlesbrough Our client is a leading provider, and a massive name in the industrial sector. They are looking for an experienced 3rd line systems administrator to come in and hit the ground running … their growing in-house team in Middlesbrough. You will be responsible for the administration and optimisation of Microsoft-based infrastructure, cloud services and enterprise systems, providing third-line support and technical expertise across the organisation. You'll work closely with ICT teams and business stakeholders to ensure systems ...

Oxford, United Kingdom ENGINEERING SCIENCE Careers Senior HPC Systems Administrator Salary Grade 8: £49,119 - £55,031 per annum (Inclusive of Oxford University weighting) Closing date Oct 01, 2026 12:00PM Description We are seeking a full‐time Senior HPC Systems … Science at the University of Oxford, working within the internationally recognised Visual Geometry Group (VGG). This is an exciting opportunity for an experienced systems professional to lead the development, administration, and strategic evolution of the groups high‐performance computing (HPC) infrastructure supporting cutting‐edge AI, computer vision ...

Title: Senior Cloud Systems Administrator Location: Gloucestershire Employment Type: Permanent About DXC DXC is committed to building diverse, inclusive teams. We welcome applications from all backgrounds and particularly encourage interest from women, underrepresented groups, and neurodivergent candidates. We offer reasonable adjustments throughout the hiring … clients to maximize efficiency, improve security, and accelerate innovation through cutting-edge technology solutions. We are currently seeking a Senior Cloud Systems Administrator to join our team and play a key role in designing, managing, and maintaining enterprise cloud environments. Role Overview ...

date and time: 24-September-2026 12:45 Digital and Information Services, Central Oxford Would you like to use your systems expertise to help shape a new University-wide research computing service from its foundations? As Senior Research Systems Administrator , you will combine … interest‐free loan to help cover the cost of a rental deposit in Oxford. About the Role As Senior Research Systems Administrator, you will help develop, operate and continuously improve complex Linux-based research computing infrastructure, spanning established HPC and HTC platforms and emerging ...

date and time: 22-September-2026 12:59 We are seeking a full-time Senior HPC Systems Administrator to join the Department of Engineering Science at the University of Oxford, working within the internationally recognised Visual Geometry Group (VGG). This is an exciting … opportunity for an experienced systems professional to lead the development, administration, and strategic evolution of the groups high-performance computing (HPC) infrastructure supporting cutting-edge AI, computer vision, and multimodal learning research. The successful candidate will take a leading role in the design, deployment, maintenance, and optimisation of large ...

Monitoring Consultant (OSS)/Senior IT Systems Administrator(FTC) About Indra Group UK & Ireland Indra is a leading global technology and consulting company, and a trusted technological partner for the core business operations of its clients worldwide. It stands at the forefront … About the Project Transport for London (TfL) has awarded Indra a long-term contract to operate, develop, enhance and expand ticketing and access control systems across London’s transport network through to 2034, with extension options to 2039. This programme covers the maintenance, operation and evolution of a large ...

Abtrace Ltd. is seeking a Systems Administrator to own our internal infrastructure, identity and endpoint estate in a hands-on role within a small team. You will manage AWS, Microsoft 365, Entra ID and device management across Windows and macOS, ensuring security, audit readiness and runbooks. This ...

Business IT Manager, two Senior System Administrators, and a System Administrator. You will be the third Senior System Administrator, playing a key role in supporting our 400 staff across the 5th and 6th floors of our Hammersmith HQ. The team also provides … remotely supports our two outsourced call centres located in India and South Africa. The impact youll have: As a Senior System Administrator, reporting directly to the Senior Business IT Manager, you'll be responsible for the strategic and high-level operational support ...

Abtrace is seeking a Systems Administrator to own internal infrastructure, identity and endpoint estate. You will manage AWS, Microsoft 365, Intune and hybrid work practices in a small team, handling support tickets and security/compliance in a NHS data‐intensive environment. The role requires hands ...

Lomar Shipping Limited is seeking an experienced IT Systems Administrator to join our IT Department in London. You will be responsible for administering, maintaining, and improving the company’s office and vessel IT infrastructure to ensure high availability, security, and reliability. You will manage Windows Server environments ...

Shield AI is seeking a highly autonomous Staff Systems Administrator to own enterprise IT infrastructure and end-user computing in a security-sensitive environment. You will design, operate, secure, and improve on-prem and cloud infrastructure, identity services, networks, and endpoints with strong adherence to compliance ...

Southampton is seeking a Senior Administrator - Investor … Services to manage the day-to-day Client and Investor Data management across multi-jurisdictional platforms. You will work with Investran, Yardi and other systems to ensure data accuracy and efficient admin reporting. Based in Southampton, this full-time role offers hybrid working with Agile options and a focus ...

outstanding Company who will provide full training The successful candidate will take ownership of the company’s IT infrastructure, networks, cloud environments, servers, monitoring systems, and core internal services. This is a hands-on senior role covering network architecture, network security, Linux administration, AWS infrastructure … email systems, monitoring, backup, access control, incident response, and infrastructure automation. The administrator will be expected not only to maintain existing systems, but also to improve their architecture, security, reliability, documentation, and operational efficiency. What you will do Design, operate, and improve office, production, laboratory ...

loveholidays is seeking a Senior System Administrator to ensure the smooth operation of IT systems across the UK and Europe. You will report to the Senior Business IT Manager and support staff in our London HQ, Dusseldorf, and remote sites. ...

Salt Digital Recruitment is seeking a DV-cleared Senior Linux System Administrator to join a security-focused team supporting a large-scale UK national infrastructure big data platform. The role emphasizes on-site delivery with strict DV clearance requirements and cross-team collaboration on DevOps ...

DXC Technology is seeking an on-site IT support role at a client location in the United Kingdom. The position emphasizes incident and problem management, system monitoring, and maintaining detailed documentation. Candidates should follow ITIL ...

from candidates without current DV clearance cannot be progressed. An opportunity is available for a DV Cleared Senior Linux System Administrator to join a specialist security team supporting a secure, large-scale big data platform for a UK critical national infrastructure programme. The platform supports ...

from candidates without current DV clearance cannot be progressed. An opportunity is available for a DV Cleared Senior Linux System Administrator to join a specialist security team supporting a secure, large-scale big data platform for a UK critical national infrastructure programme. The platform supports ...

from candidates without current DV clearance cannot be progressed. An opportunity is available for a DV Cleared Senior Linux System Administrator to join a specialist security team supporting a secure, large-scale big data platform for a UK critical nati click apply for full ...