1 to 25 of 259 Permanent Open Source Jobs in the UK

Senior Developer Relations Engineer

Hiring Organisation
Cloudsmith
Location
Belfast, UK
seeking a technical, community-first Developer Relations Engineer to become the face of Cloudsmith in the open source world, with impact lasting from today until IPO and beyond.About CloudsmithCloudsmith is the world’s most powerful artifact management platform. Software organizations of all sizes rely on Cloudsmith to control … secure their software supply chains. Cloudsmith allows customers to manage curated private repositories that proxy public open-source software registries. Developers use these repositories as their trusted source for build artifacts. We support over 30 formats, including most popular languages, package managers, operating systems ...

Embedded Linux Engineer - Remote

Hiring Organisation
Microtech Global Ltd
Location
Cambridgeshire, East Anglia, United Kingdom
Employment Type
Permanent, Work From Home
currently looking for a passionate and enthusiastic Embedded Linux Software Developer with Open-Source exposure to join our team. Your main mission will about providing consulting services to our customers in the areas of Embedded Linux (Bootloaders, Linux kernel, Linux Distros) through software development, integration, debug and testing … different types of products and customers. Location: Fully remote Travel: Optional conference attendance What Youll Actually Do Upstream & Community Participation : Contribute publicly to open source projects to ensure continuing technical leadership Real-World Impact : Analyse client problems and design solutions leveraging open source technologies and technical ...

Product Marketing Manager AI

Hiring Organisation
Appcast
Location
Remote, UK
global team of over 400 people, working together to push the boundaries of open-source technology and multi-cloud solutions. Our vision is to help developers, builders, and creators bring their ideas to life with speed and simplicity, by providing a cloud data platform that makes open-source databases, search, streaming, and application infrastructure easily accessible to everyone.Role OverviewAiven is hiring a Senior PMM to own our AI go-to-market. You'll set the narrative for why enterprises building AI workloads should standardize on managed, open source data tools, and work closely ...

Product Architect – Azure Trusted Research Environment (TRE)

Hiring Organisation
CGI
Location
United Kingdom
Employment Type
Full Time
unlock the value of sensitive data securely in the cloud. This is a rare opportunity to technically lead and product steward Microsoft's open-source Azure TRE. You'll influence the platform roadmap, work directly with Microsoft engineering teams, engage with the wider open-source community … strategic evolution of the platform while supporting client adoption and service growth. Key responsibilities include: •Leading the technical direction of the Azure TRE open-source platform, including roadmap development, code reviews, issue triage and release management. •Architecting secure, scalable Azure environments using Terraform and Infrastructure as Code principles. ...

Senior Frontend Platform Engineer

Hiring Organisation
Appcast
Location
Remote, UK
orchestration of your wildest imagination.n8n is the open workflow orchestration platform built for the new era of AI. We give technical teams the freedom of code with the speed of no-code, so they can automate faster, smarter, and without limits. Backed by a fiercely inventive community and 500+ … main goal will be to design and evolve the frontend platform foundations that power n8n’s workflow-building experience, enabling product engineers and the open-source community to ship complex, reliable, and high-performance user experiences across cloud and self-hosted deployments.As part of the team ...

Staff Software Engineer — Runtimes Performance

Hiring Organisation
Appcast
Location
Cambridge, Cambridgeshire, UK
Overview:We are looking for an experienced performance engineer who is passionate about developing compilers and managed runtimes and loves open-source software. In this role you will be working on improving the performance of managed language workloads on Arm architecture by improving the language runtime/compiler … languages support on the Arm architecture, from JavaScript to Rust. You will work closely with the team and colleagues across the organisation and with open source communities to tackle challenges in enabling the future of computing!Responsibilities:Identify and implement changes to compilers and managed runtimes to improve ...

Staff Software Engineer, Traffic Team

Hiring Organisation
Appcast
Location
Remote, UK
Load Balancer with proven experience in abuse protection mechanisms for DDoS attacks, load shedding, etc. Preferred Qualifications: Experience with HAProxy, or any other open-source Load Balancer2+ Years of Golang experienceExperience building or maintaining planetary scale engineering systemsExperience working with a remote, distributed teamStrong written and verbal communication … AreGitHub is the world’s leading AI-powered developer platform with 150 million developers and counting. We’re also home to the biggest open-source community on earth (and 99% of the world’s software has open-source code in its DNA). Many ...

Staff Software Engineer, Code Search

Hiring Organisation
Appcast
Location
Remote, UK
part of our Copilot Agents organization, positively impacting millions of software developers and AI agents around the world who are building everything from open source to global enterprises. We are looking for creative problem solvers and diverse thinkers, people who care about culture as well as customers … AreGitHub is the world’s leading AI-powered developer platform with 150 million developers and counting. We’re also home to the biggest open-source community on earth (and 99% of the world’s software has open-source code in its DNA). Many ...

Enterprise Account Manager - UK Service Providers

Hiring Organisation
Appcast
Location
Reading, Berkshire, UK
CompanyOur client is one of the fastest-growing software companies in Europe and is the publisher of a popular Open-Source operating system. Their aim is to help the enterprises welcome open source from end to end, across every category of compute and application, starting with … world's top Telecoms Service Provider's like BT and AT&T and their use cases span 5G Core, 5G Edge and Open RAN. The OpportunityIn this hunter sales role. The qualified candidate will have the responsibility to attain the given annual quota. You are expected to successfully prospect ...

Software Engineer

Hiring Organisation
SuiteCRM Ltd
Location
Stirling, Stirlingshire, Scotland, United Kingdom
Employment Type
Permanent
Salary
£35,000
want to further your career while contributing to the open source community? Our vision is to create the worlds most adopted open source CRM with our flagship application, SuiteCRM . W e re well on our way to achieving that goal and are looking … code, following our defined design and architecture standards. Collaborate with our Product, Consultancy and Quality Assurance teams. Our ideal candidate will have... Knowledge of open source communities and its principles Experience in Object Orientated Programming, preferably in PHP Development skills in Symfony, JavaScript, Angular, TypeScript, Smarty Experience working ...

Digital Verification Engineer

Hiring Organisation
Microtech Global Ltd
Location
Cambridge, Cambridgeshire, East Anglia, United Kingdom
Employment Type
Permanent, Work From Home
have an exciting opportunity for Digital Verification Engineer (15 Year's Experience) to join an innovative team developing high-quality open-source silicon used in production devices. Job Title: Digital Verification Engineer (1-5 Years Experience) Location: Cambridge, UK (Hybrid) Salary: Competitive Position: Permanent About the Role Working … testing. Contribute to verification infrastructure and automation. Collaborate closely with design engineers to ensure high-quality silicon. Participate in code reviews and contribute to open-source projects. Requirements Essential 15 years' industry experience in Digital Design Verification. Experience with SystemVerilog and UVM. Understanding of verification methodologies and constrained ...

AI Enablement Lead [gn] Data Intelligence

Hiring Organisation
Actian
Location
United Kingdom
performance, bias, data privacy, and security across all AI implementations. Cost & Latency Optimization: Actively monitor and manage cloud and API compute spend (token management, open-source vs. commercial models) and optimize execution latency for production AI features. Cross-Functional Upskilling: Lead workshops, design blueprints, and create documentation … Tooling: Define and enforce the organization's official AI stack, from vector database selection and vector embeddings strategies to semantic caching mechanisms. Vendor & Open-Source Strategy: Evaluate and manage partnerships with AI model providers and lead the technical assessment of cutting-edge open-source models ...

Junior Systems Administrator

Hiring Organisation
Quant Capital
Location
London, UK
main development team. Our client is one of the most famous global quantitative hedge funds. The environment is that of Facebook or Google, relaxed open with time to think and make the right decisions. The atmosphere is calm and relaxed with an open dress code. This … petabyte storage storage solutions utilising ZFS, Ceph, NVMe and other cutting edge technologies Work on a diverse range of projects – recent examples include utilising Open Source technologies to build our own High Availability Virtual Machine cluster and a bespoke Container creation tool Contribute to the development of configuration ...

Senior Software Engineer

Hiring Organisation
Oscar Technology
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £90,000 per annum
Already live with banks and financial institutions, and hiring to build the product further. You'll work across our data integration platform and our open-source schema language and ecosystem. What You'll Work On Mostly Kotlin backend, but everyone touches the full stack: the integration platform (streaming … pipelines, query execution, API composition, schema resolution, running in production at real financial institutions); our open-source schema language (compiler, type system, query engine, no prior compiler experience needed); our AI agent built on Spring AI (greenfield work orchestrating integrations autonomously); and the frontend (mainly Angular, some React ...

Senior Full Stack Engineer - ClickStack

Hiring Organisation
Appcast
Location
Remote, UK
revolutionizing Observability for Developers! We’re on a mission to redefine how engineers monitor, debug, and scale their production applications using ClickStack. An open-source platform that transforms telemetry data into actionable insights. Imagine a world where logs, metrics, traces, and session replays come together seamlessly to pinpoint … product: Own and build key features, focusing on frontend and backend systems that streamline debugging and monitoring for developers.Engage with the community: Collaborate with open-source contributors and customers, solve their challenges, and incorporate their feedback into our roadmap.Tackle technical challenges: Supercharging HyperDX and ClickStack to blaze through ...

AI Product Engineer - ClickStack

Hiring Organisation
Appcast
Location
Remote, UK
transform how companies use data. Come be a part of our journey!Join us in building the AI layer for Observability!ClickStack is the open-source observability platform we're building at ClickHouse — logs, metrics, traces, and session replays unified so engineers can find root causes quickly. … agentic systems.Strong evals practice: golden sets, LLM-as-judge, regression detection.SQL proficiency — you can write ClickHouse queries directly.Comfort with Docker and Kubernetes.Active in open source and the developer community.BonusBuilt or operated production agents in observability, incident response, or SRE.Strong opinions on agent observability — tracing, cost attribution, eval pipelines ...

AI Product Engineer - ClickStack

Hiring Organisation
ClickHouse
Location
United Kingdom, UK
transform how companies use data. Come be a part of our journey!Join us in building the AI layer for Observability!ClickStack is the open-source observability platform we're building at ClickHouse — logs, metrics, traces, and session replays unified so engineers can find root causes quickly. … agentic systems.Strong evals practice: golden sets, LLM-as-judge, regression detection.SQL proficiency — you can write ClickHouse queries directly.Comfort with Docker and Kubernetes.Active in open source and the developer community.BonusBuilt or operated production agents in observability, incident response, or SRE.Strong opinions on agent observability — tracing, cost attribution, eval pipelines ...

Design Verification (DV) Engineer

Hiring Organisation
Appcast
Location
London, UK
team actively working to rethink, redesign, and surpass the status quo. For example, members of our team are active maintainers of popular open source projects such as Slang, Verilator, and Cocotb.FPGA and ASIC verification is part of an innovative, growing team at HRT which is integral … hardware in an extremely fast-paced, real-time environment. No financial experience is necessary.ResponsibilitiesCreating testbenches and tests for our hardware platform, leveraging a hybrid open-source/proprietary, highly flexible environmentWriting detailed verification plansQuickly root-cause RTL bugsCollaborating directly with designers for rapid bringup of new projects ...

AI Product Manager

Hiring Organisation
n8n
Location
United Kingdom, UK
orchestration of your wildest imagination.n8n is the open workflow orchestration platform built for the new era of AI. We give technical teams the freedom of code with the speed of no-code, so they can automate faster, smarter, and without limits. Backed by a fiercely inventive community and 500+ … some details may have evolved. Think of them as a useful snapshot of the problems we care about, not a legally binding prophecy.RequirementsWe’re open to different experience levels, but the bar on AI depth, product taste, and builder energy is high.Must-havesAI-native by default: you use tools ...

Quality Management Lead

Hiring Organisation
King's College London
Location
London, UK
transform healthcare research and clinical practice.The successful candidate will join the RADAR-base team, a multidisciplinary group developing one of the world's leading open-source platforms for remote patient monitoring using smartphones, wearable devices, and connected technologies. RADAR-base supports large-scale clinical studies and digital health … organisation's culture and development practices.The role offers a unique opportunity to shape quality and regulatory processes from the ground up within an open-source digital health platform that supports research across mental health, neurological disorders, cardiovascular disease, and other mental and physical conditions.This position would suit ...

Senior Software Engineer

Hiring Organisation
Appcast
Location
Abingdon, Oxfordshire, UK
scientific computing, real-time systems, large-scale data) Experience integrating machine learning, generative AI, or LLM-based components into production systems Experience contributing to open-source projects, or integrating open-source components at scale.Energy industry experience is not required but is a strong plus. We welcome ...

Senior Cloud Architect

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Permanent
Salary
£100000 - £130000/annum
frameworks, including Scrum. Data Science Knowledge: Basic understanding of topics like machine learning, data mining, statistics, and data visualisation, with some practical experience preferred. Open-Source Contributions: History of contributions to open-source projects, showcasing collaboration and innovation. What's in It for You? We believe ...

Senior Lead Software Engineer - LLM Ops Platform Reliability

Hiring Organisation
Appcast
Location
Glasgow, UK
production environmentsOperate and scale large language model serving infrastructure, including model hosting, request routing, continuous batching, and cache optimizationDeploy, host, and lifecycle-manage open-source and proprietary large language models on cloud-based container orchestration platforms and on-premises GPU clusters using reproducible infrastructure as code and continuous … Endpoints, and Amazon Bedrock for managed model hostingExperience with online large language model quality monitoring, including hallucination detection, toxicity filtering, and drift detection using open telemetry conventionsContributions to open-source large language model serving or inference projects, (vLLM, llm-d, Ray, KServe, Triton)J.P. Morgan ...

Lead AI Engineer

Hiring Organisation
scrumconnect ltd
Location
City, Newcastle Upon Tyne, United Kingdom
Employment Type
Permanent
Salary
GBP 72,000 - 92,000 Annual
associate or professional level) - Prior delivery of AI or digital services within UK central government or wider public sector - Experience fine-tuning or adapting open-source/foundation models for a specific domain - Open-source contributions or active engagement in AI/ML engineering communities - Experience ...

Senior Data and AI Engineer

Hiring Organisation
Renewable Energy Systems
Location
Glasgow, UK
years.Azure Fabric data platform — expertise across Azure Data Factory, Synapse, Microsoft Fabric, Purview, Unity Catalogue, and Data Lake/Lakehouse architectures.Python — advanced proficiency including open-source data and ML libraries, frameworks, and production pipeline development.SQL — expert-level for data modelling, transformation, and complex query optimisation.AI/ML engineering … including building large-scale data and ML systems.Deep expertise in the Microsoft Azure data ecosystem — ADF, Synapse, Fabric, Purview, Unity Catalogue.Advanced Python skills including open-source data and ML libraries, frameworks, and messaging systems.Strong experience building and maintaining production data infrastructure for AI and ML consumption, including model ...