Applicants must hold active and valid Developed Vetting (DV) security clearance to be considered for this opportunity. Unfortunately, applications from candidates without current DV clearance cannot be progressed.An opportu...Read More>>.

Volta is the category-defining, fully vertically integrated AI infrastructure platform – from capital to clusters to software, under a founder-led enterprise. Our mission is The Utility of Compute™: AI infrastructure as dependable and availabl...Read More>>.

Job DescriptionSystems Administrator \ Support Engineer\nThis company delivers a wide range of technology solutions to organizations of all sizes that require a professional, reliable & friendly approach in helping them t...Read More>>.

Job DescriptionSenior IT Systems Administrator / Bristol (3 days on-site) / £50,000–£60,000 | DV Clearance Eligibility Required\nTake ownership. Solve complex challenges. Make IT better....Read More>>.

Overview In this role you will maintain and optimize Linux-based systems at scale to enable rapid, reliable cancer research. You will work with a cross-functional team of researchers and engineers to keep the infrastructure available and ef...Read More>>.

Overview In this role you will manage Linux (and to a lesser extent Windows) systems, ensuring installation, configuration, and ongoing maintenance. You will drive performance and reliability through innovative solutions while collaborating...Read More>>.

Overview In this role you support mission-critical trading infrastructure, working within a fast-paced, entrepreneurial team. You’ll collaborate with sales and engineering to ensure reliable server and network operations for the firm’s...Read More>>.

Overview As a Junior Linux Systems Administrator, you will support a global Linux infrastructure for a well-known retail trading business. You’ll monitor mission-critical systems to ensure uptime and performance and help implement new tec...Read More>>.

Overview In this role you will support a university’s advancing research infrastructure by applying your Linux expertise to maintain and scale systems. You collaborate with researchers and IT teams to ensure reliable HPC storage, data man...Read More>>.

Overview In this role you will support a high‑performance Linux environment powering ultra‑low latency trading. You will work closely with cross‑functional teams to monitor, optimize, and troubleshoot the production and development pl...Read More>>.

Overview In this role you will maintain and improve the client’s infrastructure within a fast-moving, innovative startup. You’ll ensure security, resilience, and reliable backups while monitoring server health and supporting data reques...Read More>>.

Overview In this role you will co-manage the Linux, Windows, and networking infrastructure for a growing quantitative hedge fund, ensuring high availability and robust security. You’ll work with a scientific, fast-moving team to diagnose...Read More>>.

Overview In this role you support the core infrastructure underpinning leading trading systems for banks and institutional clients. You will join a fast-paced Support team, collaborating with sales and engineering to keep mission-critical s...Read More>>.

Overview In this Lead Infrastructure Production Management & Reliability Engineering role, you own the reliability and evolution of Morgan Stanley’s Linux-based infrastructure. You will work across a complex mix of open-source, in-house c...Read More>>.

Overview In this Linux-focused role within the Computing Support Group, you will maintain and enhance reliable, secure computing services across a university department. You’ll work with cross-functional teams to ensure scalable, resilien...Read More>>.

We are seeking an experienced Global Infor System Administrator to take ownership of a global Infor CloudSuite A&D ERP platform within a leading international manufacturing organisation.To be considered for an interview, please make sure y...Read More>>.

HR Data & System AdministratorThe initial shortlisting calls will take place on the 22nd October,with interviews scheuled for the 3rd November 2026.We areHestia. We make a difference....Read More>>.

OverviewWe are seeking an experienced Linux System Administrator to join our Infrastructure team. This role is critical in supporting the migration of a key enterprise application from Solaris to Red Hat Enterprise Linux (RHEL), in...Read More>>.

Help shape the future of healthcare by designing the systems that keep hospitals running. Our client is seeking a visionary Systems Architect to drive enterprise-wide infrastructure initiatives supporting critical clinical operati...Read More>>.

Sanderson Government & Defence provided pay rangeThis range is provided by Sanderson Government & Defence. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay range...Read More>>.

Overview Team Lead & Principal Technical Recruiter - Engineering Division Length: 3 years to start Job Description: We are seeking a talented Senior Linux Systems Administrator to support a mid-sized RedHat Lin...Read More>>.

* United Kingdom - Hampshire - Farnborough Why Work at Lenovo We are Lenovo. We do what we say. We own what we do. We WOW our customers. Lenovo is a US$83 billion revenue global technology powerhouse, ranked #153 in the F...Read More>>.

Software Divisional Lead @ SoCode | Technical Recruiting | Digital Transformation, IT, Infrastructure & MSP Location: Cambridge Salary: 65-75K Employment Type: Full time About the Role...Read More>>.

Lenovo in the United Kingdom (Hampshire) is hiring an HPC System Administrator to manage data center infrastructure, Linux/Unix environments, and monitoring to ensure uptime and security. This role blends on-site and remote support for customers....Read More>>.

Senior DevOps Systems AdministratorGuildford -1 day a month on-site£60,000 - £65,000 + Private Medical Insurance + Holiday + PensionThis is an excellent opportunity for an experienced DevOps Systems Administra...Read More>>.

United States Digital Space LLC is seeking a TA / People Systems Administrator to optimise Ashby and scale our recruitment operations in a data-driven way. You'll own day-to-day Ashby administration, build dashboards, maintain data integrity and p...Read More>>.

Help us build a smarter, more scalable Talent Acquisition functionAt the company, we've created the world's first engineering-grade Augmented Reality solution for construction. Our technology is used on major projects around the world, helping...Read More>>.

Applicants must hold active and valid Developed Vetting (DV) security clearance to be considered for this opportunity. Unfortunately, applications from candidates without current DV clearance cannot be progressed. An opportunity is available fo...Read More>>.

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...Read More>>.

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, id...Read More>>.

Shield AI is a venture-backed defense-tech company with the mission of protecting service members and civilians with intelligent systems. Its products include Hivemind autonomy software, V-BAT and X-BATaircraft, and Aechelon simulation and synt...Read More>>.

Linux Systems Administrator / DevOps Engineer The Environment The company are a market-leading European financial technology company and transaction venue provider at the cutting edge of modern market infrastructure. Driven by...Read More>>.

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, ens...Read More>>.

CommonAI CIC is a non-profit membership organisation, founded on a belief in collaborative engineering for the safe and responsible development of foundational AI technologies. A place where AI startups, enterprises large and small, public sector...Read More>>.

Location: This role would be hybrid as needed within the United States. The role. We are hiring an experienced Systems Administrator to join our globally distributed Systems Administration team as its US-based member. You will re...Read More>>.

Shield AI is seeking a Systems Administrator to support, secure, and optimize enterprise IT operations across Windows and Linux environments. You will manage end-user support, infrastructure maintenance, asset lifecycle processes, and mentor junio...Read More>>.

DXC Technology in Cheltenham is seeking a Linux System Administrator to join our on-site team. You will handle first and second line incidents, monitor system health, and contribute to security and compliance initiatives.The role requires s...Read More>>.

Company Description Wavenet is a managed services provider offering cybersecurity, communications, and connectivity that grows with our customers' businesses - no matter what the future holds. Company Description Wavenet i...Read More>>.

Forge is seeking a Senior Systems Administrator for our London-based UK team. You’ll be based onsite in Shepherd’s Bush with hybrid work arrangement, owning IT environments across UK and South Africa and collaborating with a US IT lead....Read More>>.

Senior Systems Administrator At Forge, we bring together a global portfolio of market-leading businesses and specialist teams, connected by the technology and systems that help them do their best work. We’re collaborative, ambitious, an...Read More>>.

The Francis Crick Institute Ltd in London is seeking a Systems Administrator – Identity Specialist to lead IAM initiatives across on‑prem and cloud services. You will drive identity platforms (AD/Okta), manage DSAR workflows, and collaborate w...Read More>>.

Infor Systems Specialist Inform Systems AdministratorThe Global Infor Administrator is responsible for the global operational management, administration, governance, and continuous improvement of the platform. The role will own the day-to-d...Read More>>.

Job TitleSystems Administrator – Identity SpecialistReports toMohammed BulbuliaClosing Date22/Oct/2026 23.59 GMTAbout usThe Francis Crick Institute is Europe’s largest biomedical researc...Read More>>.

Help power U.S. diplomacy as Senior IT Systems Administrator at the U.S. Embassy, London Croughton Annex!Do you like solving complex problems on networks that need to stay secure?The U.S. Mission to the United Kingdom is hi...Read More>>.

Netsuite & RF Smart System AdministratorWe are seeking a proactive and technically capable ERP & WMS System Administrator to lead the administration, optimisation, and continuous improvement of NetSuite and RF-SMART across our pan-Europea...Read More>>.

U.S. Embassy London Annex in Croughton is seeking a Senior IT Systems Administrator to own and advance the Diplomatic Technology network and security posture. You will lead design, deployment, and operation of critical IT systems to enable diploma...Read More>>.

Quality Systems ManagerCounty LouthVickerstock are working in partnership with a leading specialist engineering and manufacturing business on the appointment of a Quality Systems Manager...Read More>>.

Senior System AdminLocation: Northern Ireland - Fully RemoteSalary: Up to £55,000Type: PermanentA fantastic opportunity has opened for an experienced Senior Syste...Read More>>.