Overview In this role you support the maintenance and development of a Linux-centric estate across hosts, VMs, containers, and storage. You will help refine monitoring, automation, and security while embracing open source to drive performan...Read More>>.

Overview As a Linux Systems Engineer at a leading fintech trading firm, you will design and maintain our global Linux-based server and network stack, driving automation and scalable ops. You will work within a collaborative infrastructure t...Read More>>.

Overview As a Linux Systems Engineer, you will help design, build, and sustain the infrastructure that provisions products across media, radio, and advertising. You’ll operate in a fast-growing SME environment with clear paths to impact a...Read More>>.

Overview As a Linux Systems Engineer in a high-profile trading environment, you will design and support highly available Linux estates across a modern tech stack. You’ll work alongside a senior Linux administrator to support production sy...Read More>>.

Overview In this role you will maintain and optimize a Linux-based platform powering high-frequency trading systems. You will join a highly skilled team known for rigour and innovative culture, working with a mix of in-house and open-source...Read More>>.

Overview In this role you will support mission-critical trading infrastructure for a leading fintech client. You will work within a dedicated support team, collaborating with sales and engineering to maintain high-availability systems. You...Read More>>.

Overview In this role you will support a high-profile quant hedge fund’s development team as a Junior Linux Systems Engineer. You’ll build and maintain Linux servers, VMs, containers, and mixed environments, while shaping storage and ne...Read More>>.

Overview In this role you will strengthen a high-performance Linux-driven trading platform for a global quant firm. You will collaborate with a top-tier team to build and automate core systems powering proprietary trading, applying deep OS...Read More>>.

Overview In this contract role, you will support the creation, maintenance and testing of software builds for SystemCanada, operating within a corporate IT environment. You will manage version control and traceability, and oversee maintenan...Read More>>.

Overview In this Senior Linux Engineer role, you design, build, and optimize cutting-edge Linux-based infrastructure for a leading trading and research environment. You will work within the Quant Systems team in London to shape compute, sto...Read More>>.

Overview In this role you will support a UK-based, high-frequency trading infrastructure expanding over the next 6–12 months. You’ll work within a small, cross-functional team to maintain hardware, networking, and software build pipelin...Read More>>.

Overview In this role you will support a global data center portfolio, focusing on architecture, implementation, troubleshooting and optimization in a fast-paced trading environment. You collaborate with software engineers, traders and infr...Read More>>.

Overview In this role you will own and grow Riverlane’s core HPC and Linux infrastructure to support cutting-edge quantum error correction research. You will lead day-to-day HPC cluster administration while shaping long-term plans for a s...Read More>>.

Position Overview Contract - 6 months Seeking a mid-level Linux Systems Engineer to join a Storage Engineering team. This role focuses on platform integration, compliance testing, and process documentation to ensure a high-p...Read More>>.

Senior Embedded Linux / Systems Software Engineer Build mission‑critical technology for the operating room Are you passionate about low‑level Linux systems and medical‑grade software that directly im...Read More>>.

A global technology company is seeking a Lead Systems Reliability Engineer to join their engineering team in Greater London. The role involves leading a team, managing Linux-based systems, and enhancing infrastructure automation at scale. Ideal candi...Read More>>.

DevOps Engineer/Systems Administrator – Linux / LAMP – Higher Education Our Higher Education client, a global leader in delivering innovative online learning solutions, is seeking a DevOps Engineer/Systems Administrator to join the...Read More>>.

OverviewThis range is provided by The HALO Trust. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay rangeRole: Microsoft Systems AdministratorC...Read More>>.

A leading UK organisation is seeking a C++ Software Engineer to develop complex engineering solutions in Manchester. In this role, you'll work on performance-critical software in a Linux environment, requiring expertise in C++ and an understanding of...Read More>>.

A recruitment agency is seeking a Customer Support Engineer with a strong background in Linux systems to join a growing technical support team. This role involves supporting installations and ensuring system configurations are effective and reliable....Read More>>.

A financial services firm based in London is seeking a hands-on Systems Administrator. The role involves managing both workstations and servers for their trading operations and requires strong Linux skills. The ideal candidate will have experience in...Read More>>.

Facepunch is seeking an experienced IT Systems Administrator to manage its core infrastructure. This hybrid role requires strong experience with on-premises and cloud systems, a proactive approach to security, and effective workload management....Read More>>.

Miller Maxwell Ltd in Greater London is looking for a Linux Systems Administrator to manage and optimise Linux servers and automate operational tasks. You will troubleshoot performance issues and work closely with engineering teams to enhance stabili...Read More>>.

Neutral Street is seeking a seasoned architect to optimize a high-performance Linux environment for trading systems. The role focuses on latency, throughput, security, and reliability of OS configurations.You will tune the kernel, automate...Read More>>.

Ex-Mil Recruitment Ltd in the United Kingdom is helping a defence technology employer recruit a Junior Systems & Build Engineer to develop specialist skills in Linux, infrastructure, software builds and deployment.You will work with enginee...Read More>>.

Leonardo is seeking a Linux Systems Engineer in London for hybrid working (office/remote). You will work at the intersection of Linux internals, networking and security to build secure endpoint solutions for high‑profile clients.You will...Read More>>.

System Recruitment is seeking an experienced C/Linux Software Developer for a hybrid role accessible from the Southampton area. The position focuses on building and maintaining compact C code on Linux, integrating authentication components, and su...Read More>>.

N P Associates in London is seeking a Linux Systems Administrator / DevOps Engineer to join a high-performance team building scalable, low-latency infrastructure. You will be hands-on from day one in a small DevOps group, focusing on automation an...Read More>>.

G-Research is seeking a Platform Desktop Engineer in London to own and operate the Linux image build pipeline and provisioning tooling. You will work with OpenStack and Ironic to scale bare metal and VM provisioning, while maintaining security, mo...Read More>>.

Oliver Bernard partners with a world-leading systematic trading firm in London to hire a senior Linux engineer for its Infrastructure teams. You will work on sophisticated trading systems, write software, filesystems and tools, and collaborate wit...Read More>>.

Jane Street is seeking Linux Engineers to join the team maintaining its critical infrastructure that underpins the firm's technology. The role covers a broad range of areas from the physical hardware to workload orchestration, with opportunities t...Read More>>.

smartTrade Technologies in the United Kingdom seeks a hands-on Linux Systems & Datacenter Administrator to own the Slough (Equinix) environment and contribute to our private cloud. The role blends Ubuntu Linux, Windows admin, container platforms (...Read More>>.

Fort Recruitment seeks a Senior System and Network Administrator to own and optimize the global IT backbone for a marine energy company. You will design and secure network infrastructure, manage cloud and on-site environments, and automate operati...Read More>>.

Hybrid - 3 days in the officeLocation: London, CityA globally recognised independent trading business that have a strong focus around market making, brokerage services and low latency algorithmic tra...Read More>>.

AIRBUS Defence and Space Limited is seeking a professional to join the Digital Engineering team in Stevenage. The role focuses on reliably operating Linux infrastructure and leading technical strategies to support diverse engineering projects....Read More>>.

Airbus Defence and Space is seeking a Linux Infrastructure Engineer in Stevenage to design, provision and maintain the Linux systems underpinning our development environment.You will provide technical leadership, ensure deployment maturity,...Read More>>.

Airbus Defence and Space Limited in Stevenage is seeking a professional Linux Systems Administrator to join our Digital Engineering team. You will design, deploy and maintain Red Hat Enterprise Linux environments and automate with Ansible to suppo...Read More>>.

SECURITY CLEARANCE: This position involves working within the UK Defence industry, requiring the applicants to be UK Nationals Only (No Dual Nationals) and able to be security cleared to a UK SC level.,Architect and Maintain Infrastruc...Read More>>.

Job Description:SECURITY CLEARANCE: This position involves working within the UK Defence industry, requiring the applicants to be UK Nationals Only (No Dual Nationals) and able to be security cleared to a UK SC level.LOCATION:...Read More>>.

CGI is looking for an experienced System Engineer to join our Space, Defence and Intelligence team in the UK. The role focuses on delivering secure, mission-critical systems for government clients, with strong emphasis on collaboration and innovat...Read More>>.

OverviewSite Reliability Engineer role at Tribal Group. Remote UK-based opportunity.This is a full-time remote role focused on maintaining reliable, scalable, and high-performance SaaS services across cloud environ...Read More>>.

CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named one of the 'World's Best Employers' by Forbes magazine. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3....Read More>>.

Position: Software Engineer (Bash and Shell Script) Type: Hourly contract Compensation: $80–$90/hour Location: Remote Commitment: 10–40 hours/week Role Responsibilities...Read More>>.

KBR, Inc. seeks a Senior IT Systems Administrator (Linux & HPC) to own and operate Linux-based enterprise and HPC platforms, including SLURM scheduling, Nvidia Base Command Manager, and CycleCloud. You will work with engineering and scientific use...Read More>>.