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 own the Windows infrastructure that underpins critical business operations. You will maintain and improve a mixed Windows and Linux environment across physical and virtual machines, with a focus on Windows ser...Read More>>.

Overview As Senior Network Administrator at KBR, you will manage and secure the enterprise network infrastructure to ensure reliability and performance. You will work within cross-functional teams to support data centre, cloud, and hybrid c...Read More>>.

Overview In this role, you ensure the stability of critical applications by performing production support and automation for container-based environments. You will work with platform, engineering and delivery teams to provide seamless infra...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 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 will own the Linux and HPC platform stack, delivering secure, reliable enterprise and research-computing environments. You will manage Linux systems, HPC clusters, and workload scheduling while ensuring performance...Read More>>.

Overview In this role, you will design, implement, and support scalable technology solutions for on‑premises and Azure environments. You’ll build self-service capabilities and automate deployments to improve efficiency. You’ll ensure...Read More>>.

Overview In this role you will support and automate a diverse enterprise tech stack for a high-profile systematic fund. You’ll manage Windows and Linux environments, storage and clustering solutions, and a modern communications platform....Read More>>.

Overview In this role you will provide operational support for large, global-scale systems used in building management and physical security. You will work with a ticket-based workflow to troubleshoot and resolve issues, collaborating with...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 shape and operate a university-wide research computing service, building and evolving Linux-based infrastructure for HPC, HTC, and emerging AI/GPU platforms. You will work with researchers and cross-functional...Read More>>.

Overview In this role you will own and govern core IFS master data to support global business processes. You will work across functions to ensure data is accurate, consistent, and ready for day-to-day operations, including onboarding new un...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 As a Systems Administrator, you will own the day-to-day IT function for the UK and Europe, acting as a trusted expert for IT requests in a hands-on capacity. You’ll manage IT systems, devices, security, SaaS, and office technolog...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 junior role, you will support the staff’s technology and user experience across Windows/Linux desktops, servers, and enterprise apps. You’ll contribute to automation-driven IT operations and rapidly grow your technical...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 will design, manage and support Global Relay’s Windows environments with a focus on corporate Exchange and Active Directory. You will work closely with cross-functional teams to ensure high availability, security...Read More>>.

Overview In this role you lead the IT Helpdesk and Systems Administration for a renowned systematic hedge fund, supporting Europe and Asia-Pacific offices. You will oversee a high-tech Windows and Linux environment, storage and clustered co...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 role you support a diverse tech environment spanning Windows and Linux servers, VMs, containers, and storage-heavy infrastructure. You will work with a cross-functional team to maintain network services, architecture, and o...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>>.

Base pay rangeSystems AdministratorTechnology | Infrastructure | Virtualisation | NetworkingI am searching for a Systems Administrator for my client, a global technology company focused on delivering...Read More>>.

Neighbourhoods and Housing in Liverpool seeks a dedicated Business Support Officer to maintain records, handle information processing, and respond to residents’ queries with a flexible, customer-focused approach. The role includes minute-taking,...Read More>>.

As one of the fastest-growing Colleges in the UK, delivering courses from entry level right up to Masters degrees, Weston College is an inspiring place to work.Why not join us as an IT Systems Administrator?This is a full-time role,...Read More>>.

ALTOUR , we believe people are the driving force behind every meaningful connection - our clients’ and our own. With more than 1,000 team members and a presence in over 80 countries, we are a globally recognized leader in corporate travel manage...Read More>>.

We are Lenovo! We are hiring an HPC System Administrator in London to support mixed on-site and remote customer environments.You will manage data-center infrastructure, perform firmware upgrades and software patches, and troubleshoot comple...Read More>>.

Building 2, Moretown, Floor 54 Thomas More StreetLondon, LON E1W1YW, GBR We are seeking a proactive and detail-orientedGlobal Financial Systems Administratorto oversee the administration, optimization, and support of our e...Read More>>.

Systems Administrator / Engineer (Solace Messaging Linux Networking) London / WFH to £100kDo you have Solace message system administration skills?You could be progressing your career at a global brokerage and...Read More>>.

M.C. Dean in the United Kingdom is seeking a System Administrator 2 to join the Security and Electronic Systems (SES) unit. You will configure and maintain Physical Access Control, CCTV, PSIM, and other electronic security systems for client sites...Read More>>.

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, e...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>>.

At Octopus Energy Generation (OEGEN), we're passionate about powering a sustainable future. As pioneers in the renewable energy space, we don’t just invest in utility-scale projects; we invest in people, communities, and a greener tomorrow....Read More>>.

Side is seeking an IT Systems Administrator to join its global IT Support team in London. You will maintain corporate servers, network infrastructure, and desktops (Windows, Mac, Linux) and manage Active Directory, Office 365, Intune, and security...Read More>>.

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 NH...Read More>>.

Company: Global Retail Company Position: Infrastructure Specialist Contract: 1-year fixed term contract Location: London (Hybrid) Salary: 60,000 – 70,000 GBP + 10% Bonus...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>>.

Career Moves Group I B Corp™ is partnering with a leading London-based property real estate company to recruit an experienced Business Systems Analyst. You will own horizon platform administration, collaborate with stakeholders, and drive system...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>>.

M.C. Dean, Inc. is hiring a System Administrator 1 for its Security and Electronic Systems (SES) unit.You will join a TOC team configuring and maintaining CCTV, access control, PSIM and related electronic security services for federal, loca...Read More>>.

About M.C. Dean M.C. Dean is Building Intelligence®. We design, build, operate, and maintain cyber-physical solutions for the nation’s most mission-critical facilities, secure environments, complex infrastructure, and global enterpr...Read More>>.

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 i...Read More>>.

At McLaren Racing, we’re not just here to try to take the chequered flag. We’re here to excite our fans, inspire our people and deliver for our partners. And we’re also committed to evolving our sport, our industry, and our technology, to...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 entity environment. You will design, implement, secure, and continuously improve on-premises sy...Read More>>.

Shield AI is seeking a highly autonomous Staff Systems Administrator to own enterprise IT infrastructure within a security-sensitive entity. You will design, implement, secure, and operate on-premises and cloud platforms, ensuring audit-ready evid...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-BAT aircraft, and Aechelon simulation and synthe...Read More>>.

Abtrace Limited in London is seeking a Systems Administrator to own our internal infrastructure, identity and endpoint estate, and to keep the internal support pipeline moving. This hands-on role covers AWS, Microsoft 365, Intune, Jamf/Kandji, and...Read More>>.