1 to 25 of 27 Senior Systems Administrator Jobs in the UK

Senior Systems Administrator Location: Fareham, Hampshire Working Pattern: Office-based during probation, then minimum 3 days onsite per week Salary: £60k - £70k plus benefits An opportunity has arisen for an experienced Senior Systems Administrator to join an established … business specialising in payment infrastructure and transaction processing. This is an excellent opportunity for a technically strong Infrastructure Engineer or Senior Systems Administrator who enjoys taking ownership of complex production environments and working with modern cloud technologies. You'll be responsible for maintaining, securing ...

Senior Systems Administrator Make sure to apply with all the requested information, as laid out in the job overview below. Location: Fareham, Hampshire Working Pattern: Office-based during probation, then minimum 3 days onsite per week Salary: £60k - £70k plus benefits An opportunity … arisen for an experienced Senior Systems Administrator to join an established technology business specialising in payment infrastructure and transaction processing. This is an excellent opportunity for a technically strong Infrastructure Engineer or Senior Systems Administrator who enjoys taking ...

Senior IT Systems Administrator/Bristol (3 days on-site)/£50,000–£60,000 | DV Clearance Eligibility Required Take ownership. Solve complex challenges. Make IT better. TwinStream is looking for an experienced Senior IT Systems Administrator to help keep our IT systems secure, resilient and performing at their best. This is a hands-on senior role offering the autonomy to tackle complex technical challenges, drive improvements, introduce automation and support colleagues across a growing business. About TwinStream Founded ...

Senior Linux Systems Administrator-LAMP Senior Linux Systems Administrator is needed to support our higher education client, a global leader in delivering innovative online learning solutions to support a large-scale Linux infrastructure estate and e-learning platforms … strong Ubuntu administration skills, a solid understanding of LAMP environments and practical experience of Bash scripting and Ansible automation. Senior Linux Systems Administrator- LAMP- Essential Experience • Strong hands-on experience administering Linux environments, ideally Ubuntu. • Good knowledge of web technologies and LAMP/LEMP ...

Senior Linux Systems Administrator-LAMP Senior Linux Systems Administrator is needed to support our higher education client, a global leader in delivering innovative online learning solutions to support a large-scale Linux infrastructure estate and e-learning platforms … strong Ubuntu administration skills, a solid understanding of LAMP environments and practical experience of Bash scripting and Ansible automation. Senior Linux Systems Administrator- LAMP- Essential Experience Strong hands-on experience administering Linux environments, ideally Ubuntu. Good knowledge of web technologies and LAMP/LEMP ...

Senior Systems Administrator Location: Fareham, Hampshire Working Pattern: Office-based during probation, then minimum 3 days onsite per week Salary: £60k - £70k plus benefits An opportunity has arisen for an experienced Senior Systems Administrator to join an established ...

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 ...

Senior IT Systems Administrator/Bristol (3 days on-site)/£50,000-£60,000 DV Clearance Eligibility Required Take ownership. Solve complex challenges. Make IT better. TwinStream is looking for an experienced Senior IT Systems Administrator to help keep our IT systems secure, resilient and performing at their best click apply for full job details ...

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 ...

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 ...

Senior Linux Systems Administrator-LAMP Senior Linux Systems Administrator is needed to support our higher education client, a global leader in delivering innovative online learning solutions to support a large-scale Linux infrastructure estate and e-learning platforms ...

worldwide. For more information, visit www.shield.ai . Follow Shield AI on LinkedIn , X , Instagram , and YouTube . Job Description: The Senior Systems Administrator is responsible for supporting, securing, and optimizing enterprise IT operations. This includes end-user system support, infrastructure maintenance, IT asset lifecycle … discipline, and a collaborative mindset to support a modern, scalable, and secure IT environment. What you'll do: Provide hands-on desktop, server, and systems administration support for Windows and Linux environments. Install, configure, and troubleshoot hardware and software issues across end-user devices and server systems. Administer user ...

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 ...

Huthwaite, GB, NG17 2HZ Bristol, GB, BS2 0TB Date posted 28 October 2026 An opportunity is available for a Senior Finance Systems Administrator and Analyst within the Finance team. Reporting to the ICON System Owner, the successful candidate will provide administration, support and continuous … enhancements and upgrades. Working closely with Finance, IT teams and external suppliers, the postholder will help ensure the effective operation of business-critical finance systems whilst identifying opportunities to improve processes, reporting and automation. The role also offers the opportunity to develop knowledge of ICON and AWS reporting technologies ...

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 ...

funding in order to design, build and deploy innovative AI systems. The Opportunity We are seeking a highly skilled Senior AI Systems Administrator to join our rapidly growing engineering team. You will provision and maintain multi-rack GPU server clusters designed for both inference … understanding of network design and switch/router/firewall configuration The desire to work collaboratively with users and other stakeholders to iteratively optimise systems Experience with any or all of the following will also be highly valued: High-performance or high‐availability storage servers/clusters (Lustre, Ceph ...

CommonAI CIC in Cambridge is seeking a Senior AI Systems Administrator to design, deploy and maintain multi-rack GPU server clusters for inference and training. You will work at the intersection of high-end hardware and software orchestration, ensuring scalable, reliable infrastructure for advanced ...

information, visit www.shield.ai . Follow Shield AI on LinkedIn , X , Instagram , and YouTube . Job Description: Shield AI is seeking a highly autonomous Staff Systems Administrator to serve as the accountable technical owner for enterprise IT infrastructure and end-user computing within a dedicated, security-sensitive entity … environment. This senior individual contributor will design, implement, operate, secure, and continuously improve on-premises systems, cloud platforms, identity services, networks, and endpoints while preserving required legal, operational, information-security, and access boundaries. The role combines deep infrastructure ownership with hands-on service delivery. The successful ...

National Grid plc is seeking a Senior Finance Systems Administrator and Analyst to administer the e5 Finance system, support users, and drive improvements. The role collaborates with Finance, IT and suppliers to ensure reliable operation and to enhance reporting and automation. You will develop … expertise in ICON and AWS reporting as part of evolving the Finance Systems function, with hybrid working and two days in the office per week. #J-18808-Ljbffr ...

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 ...

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 ...

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 ...

Are you curious, motivated, and forward-thinking? At FIS you’ll have the opportunity to work on some of the most challenging and relevant issues in financial services and technology. Our talented people empower us ...

ambition, we'd love you to be part of it! Role Overview: This is a senior, hands on role owning the systems that run CloudM’s revenue operating model. Salesforce sits at the centre of it and you will be accountable for it. You will inherit … what to build yourself, what to hand out, and how to hold a supplier to a standard. This role suits someone who enjoys improving systems, asks clarifying questions before building, and is as comfortable explaining a report to a sales manager as they are rebuilding a broken flow. Responsibilities ...

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 ...