1 to 25 of 153 Open Source Jobs in the UK excluding London

the desktop and data centre. 'Wherever Computing Happens', we need to enable Arm by providing software solutions that interface higher-level software stacks with the hardware itself. Responsibilities: Our Open Source Software group is enabling new Arm architecture in projects such as kernel, firmware, system control and driver development, for a variety of target markets. Software on Arm … As well as the technical work of writing patches to implement new functionality, improve performance and enable new Arm architecture, you will enjoy working as part of the wider open source community. Required Skills and Experience: Proficient C programmer Desire and ability to work as part of a team Passion for open source development "Nice To … Have" Skills and Experience: Armv8-A Architecture Arm64 assembly language Experience of open source working practices Knowledge of Android, Linux kernel, driver development, security, cryptography In Return: Our UK offices are amazing places to collaborate. We also have some scope to adapt the job role and title for the right person - if you are interested but unsure whether More ❯

s your chance to take full ownership of frontend projects from design to delivery with minimal supervision! About Ballerine Ballerine is a high-growth, early-stage startup building an open-source platform for identity verification and risk management in the financial sector. It’s a fast-paced team preparing for Series A funding — and looking for a Senior … in React, TypeScript, modern frontend frameworks and architectures • Strong understanding of state management, performance optimization, and scalable component-driven design • Experience with testing frameworks (Jest, Cypress, Playwright) • Comfort with open-source principles and contributions • Clear, confident communication in English (minimum C1, no heavy accents) • Ability to onboard quickly and deliver at startup pace • Proactive, independent, and ownership-driven … Chance to join a core team pre-Series A, shaping the product and the company’s direction • Work on complex, high-scale challenges with cutting-edge tools (LLMs, AI, open-source) • A culture where your voice matters — small team, high impact, no bureaucracy • Opportunities for technical leadership and direct influence on strategy • Fully remote role Responsibilities • Architect, develop More ❯

and Bristol, our UK offices are where emerging talent contributes to global innovation. Whether you're helping to shape the next generation of processors or building tools used across open-source communities, the work you do here will have real-world impact from day one. Our roots in the UK run deep and so does our commitment to … the UK. I wanted to join Arm to grow at a company tackling some of the most exciting challenges in tech, in an inclusive and welcoming environment. Working on open-source projects has been a rewarding challenge - learning how to contribute on behalf of Arm and meet the high standards these projects demand. Intern, based in Manchester Graduate … looking for more than just technical ability. At Arm, we want individuals who are curious, collaborative, and motivated to learn. Whether you're experimenting with side projects, contributing to open-source work, or stepping outside your comfort zone, we value candidates who bring initiative and creativity to everything they do. "I'd recommend checking out the blogs on More ❯

X Days a week Plymouth Clearance: Active SC Essential Sector: Defence Role Overview Defence client requires an SC Cleared AI Engineer to build fully on-premises RAG systems using open-source technologies. You'll develop classified AI capabilities on air-gapped infrastructure with zero external dependencies. Key Responsibilities - Build end-to-end RAG pipelines on isolated defence networks … using open-source LLMs (Llama 3, Mistral, Qwen) - Deploy local vector stores (Chroma, FAISS, Milvus) with sensitive document ingestion pipelines - Host and optimise LLMs using vLLM/TGI on local GPU clusters without internet connectivity - Implement agent orchestration using LangChain/LangGraph in completely offline environments - Design secure document processing for classified materials with appropriate data sanitisation - Build … monitoring and evaluation systems that operate within air-gapped infrastructure Essential Requirements - Active SC Clearance (non-negotiable) - willingness to undergo DV if required - Demonstrable experience deploying open-source LLMs (Llama, Mistral, Falcon) on-premises - Expertise with local vector databases (Chroma, FAISS, Weaviate) in offline deployments - Strong vLLM/Text Generation Inference experience for high-throughput model serving - Proven More ❯

to Work" please feel free to ask us about the access to work scheme. Desirable Skills Experience using Azure OpenAI and foundational LLMs for Retrieval-Augmented Generation (RAG), including open-source implementations. Experience with LLM architecture (e.g., Transformer, GANs, VAEs), Fine-tuning PEFT/LoRA, Context embedding, Vector database technologies, and Semantic Search techniques & tools. Familiarity with Azure … Python libraries (e.g., PyPDF, Camelot) and OCR tools like Azure Document Intelligence or AWS Textract. Awareness of emerging InsurTech innovations, with the ability to propose creative solutions and adapt open-source models and technologies. What We Will Offer You Recognised and rewarded for a job well done, we have a range of flexible benefits for you to choose More ❯

code through rigorous testing and code review processes. Contribute to cross-platform development (Windows, Linux, Android, iOS, Mac) using CMake. Utilize unit testing frameworks like GTest/Catch and open-source libraries such as Boost and OpenCV. Work with .NET Core and Restful API, and proficiency in scripting languages like Python. Implement complex object-oriented patterns, public interfaces … What We're Looking For: Proven experience in software development in a commercial environment. Strong proficiency in modern C++ development and cross-platform development. Familiarity with unit testing frameworks, open-source libraries, and code review processes. Working knowledge of .NET Core, Restful API, and scripting languages. Passion for problem-solving and a commitment to continuous improvement. Experience in More ❯

a general or development specific genre, or a willingness to work towards it. The post holder will be able to demonstrate the following knowledge, skills, and experience: Proficient in Open-source technologies such as TypeScript, JavaScript, Java, PHP, HTML, and CSS within Open-source environments. A sound understanding of value-based delivery and planning and ability More ❯

a general or development specific genre, or a willingness to work towards it. The post holder will be able to demonstrate the following knowledge, skills, and experience: Proficient in Open-source technologies such as TypeScript, JavaScript, Java, PHP, HTML, and CSS within Open-source environments. A sound understanding of value-based delivery and planning and ability More ❯

a general or development specific genre, or a willingness to work towards it. The post holder will be able to demonstrate the following knowledge, skills, and experience: Proficient in Open-source technologies such as TypeScript, JavaScript, Java, PHP, HTML, and CSS within Open-source environments. A sound understanding of value-based delivery and planning and ability More ❯

solution architecture (cloud & on-prem). Develop and deploy ML models into production. Identify AI opportunities aligned with business processes Prototype, test, and optimize AI applications. Stay current with open-source AI/ML frameworks. Communicate AI capabilities and set realistic expectations. Essential Skills & Experience Strong expertise in GenAI, NLP, and ML. Hands-on experience with LLMs/… SLMs, Python, Java, SQL/NoSQL. API development, web scraping, data integration. On-prem AI model deployment, open-source frameworks (e.g. Hugging Face, LangChain). Strong consulting and communication skills. Preferred Knowledge of data structures, algorithms, and solution architecture. Experience with cloud AI platforms (AWS, Azure, GCP). Broad ML knowledge and prior consulting with international teams. Refer More ❯

solution architecture (cloud & on-prem). Develop and deploy ML models into production. Identify AI opportunities aligned with business processes Prototype, test, and optimize AI applications. Stay current with open-source AI/ML frameworks. Communicate AI capabilities and set realistic expectations. Essential Skills & Experience Strong expertise in GenAI, NLP, and ML. Hands-on experience with LLMs/… SLMs, Python, Java, SQL/NoSQL. API development, web scraping, data integration. On-prem AI model deployment, open-source frameworks (e.g. Hugging Face, LangChain). Strong consulting and communication skills. Preferred Knowledge of data structures, algorithms, and solution architecture. Experience with cloud AI platforms (AWS, Azure, GCP). Broad ML knowledge and prior consulting with international teams. Refer More ❯

databases, and Python-based solutions. Prototype and test AI applications, optimizing performance and scalability. Apply backend/data processing skills to handle structured and unstructured datasets. Stay current with open-source AI/ML frameworks (e.g., Hugging Face, LangChain) and apply them to business needs. Communicate technical concepts clearly to technical and non-technical stakeholders. Essential Skills & Experience …/SLM). Proficiency in Python (Pandas, NumPy, Scikit-learn, PyTorch/TensorFlow). Experience with SQL/NoSQL databases, APIs, and data integration. Exposure to on-premise/open-source AI frameworks. Strong problem-solving and communication skills. Preferred Knowledge of data structures, algorithms, and solution architecture. Familiarity with cloud AI platforms (AWS, Azure, GCP). Understanding More ❯

databases, and Python-based solutions. Prototype and test AI applications, optimizing performance and scalability. Apply backend/data processing skills to handle structured and unstructured datasets. Stay current with open-source AI/ML frameworks (e.g., Hugging Face, LangChain) and apply them to business needs. Communicate technical concepts clearly to technical and non-technical stakeholders. Essential Skills & Experience …/SLM). Proficiency in Python (Pandas, NumPy, Scikit-learn, PyTorch/TensorFlow). Experience with SQL/NoSQL databases, APIs, and data integration. Exposure to on-premise/open-source AI frameworks. Strong problem-solving and communication skills. Preferred Knowledge of data structures, algorithms, and solution architecture. Familiarity with cloud AI platforms (AWS, Azure, GCP). Understanding More ❯

responsibilities Define and champion the technical strategy for services, ensuring alignment with user needs and business goals Lead technical specialists across multiple projects, solving architectural challenges. Design and assure open-source, user-centred systems in agile environments. Own the technical design and evolution of services, including integration and interoperability. Provide technical governance and present designs to boards such … governance boards and ensuring alignment with standards. Previous or current experience developing web services using Python/Django and/or NodeJS/React with knowledge of cloud technologies, open-source technologies and secure system design. Proven leadership in guiding technical teams, delivering user-focused services in agile environments and communicating complex concepts to varied stakeholders. Desirable skills More ❯

responsibilities Define and champion the technical strategy for services, ensuring alignment with user needs and business goals Lead technical specialists across multiple projects, solving architectural challenges. Design and assure open-source, user-centred systems in agile environments. Own the technical design and evolution of services, including integration and interoperability. Provide technical governance and present designs to boards such … governance boards and ensuring alignment with standards. Previous or current experience developing web services using Python/Django and/or NodeJS/React with knowledge of cloud technologies, open-source technologies and secure system design. Proven leadership in guiding technical teams, delivering user-focused services in agile environments and communicating complex concepts to varied stakeholders. Desirable skills More ❯

responsibilities Define and champion the technical strategy for services, ensuring alignment with user needs and business goals Lead technical specialists across multiple projects, solving architectural challenges. Design and assure open-source, user-centred systems in agile environments. Own the technical design and evolution of services, including integration and interoperability. Provide technical governance and present designs to boards such … governance boards and ensuring alignment with standards. Previous or current experience developing web services using Python/Django and/or NodeJS/React with knowledge of cloud technologies, open-source technologies and secure system design. Proven leadership in guiding technical teams, delivering user-focused services in agile environments and communicating complex concepts to varied stakeholders. Desirable skills More ❯

responsibilities Define and champion the technical strategy for services, ensuring alignment with user needs and business goals Lead technical specialists across multiple projects, solving architectural challenges. Design and assure open-source, user-centred systems in agile environments. Own the technical design and evolution of services, including integration and interoperability. Provide technical governance and present designs to boards such … governance boards and ensuring alignment with standards. Previous or current experience developing web services using Python/Django and/or NodeJS/React with knowledge of cloud technologies, open-source technologies and secure system design. Proven leadership in guiding technical teams, delivering user-focused services in agile environments and communicating complex concepts to varied stakeholders. Desirable skills More ❯

responsibilities Define and champion the technical strategy for services, ensuring alignment with user needs and business goals Lead technical specialists across multiple projects, solving architectural challenges. Design and assure open-source, user-centred systems in agile environments. Own the technical design and evolution of services, including integration and interoperability. Provide technical governance and present designs to boards such … governance boards and ensuring alignment with standards. Previous or current experience developing web services using Python/Django and/or NodeJS/React with knowledge of cloud technologies, open-source technologies and secure system design. Proven leadership in guiding technical teams, delivering user-focused services in agile environments and communicating complex concepts to varied stakeholders. Desirable skills More ❯

responsibilities Define and champion the technical strategy for services, ensuring alignment with user needs and business goals Lead technical specialists across multiple projects, solving architectural challenges. Design and assure open-source, user-centred systems in agile environments. Own the technical design and evolution of services, including integration and interoperability. Provide technical governance and present designs to boards such … governance boards and ensuring alignment with standards. Previous or current experience developing web services using Python/Django and/or NodeJS/React with knowledge of cloud technologies, open-source technologies and secure system design. Proven leadership in guiding technical teams, delivering user-focused services in agile environments and communicating complex concepts to varied stakeholders. Desirable skills More ❯

React and Typescript/Open-Source Software Engineer to join our talented & recently formed creative team. Based in Manchester and fully remote, the team are designing and developing the next generation containerised IT infrastructure. This React and TypeScript Software Engineer opportunity is deeply technical, and we want someone with solid Python or TypeScript experience and a thirst to … peer code review. Any exposure to Angular front-end tech is highly advantageous. Are you excited about Golang, Jenkins, Dockers, Kubernetes, architecture, test driven development, API's and everything open source? Then I'd love to hear from you. Superb environment, office, tech stack and ability to learn from one of the greatest in the industry. Please apply More ❯

Location: Manchester, Fully Remote Category: Contract Jobs Salary: 225pd + Outside IR35, Fully Remote Ref: JT/JC/5956 Contact Name: James Clarke Telephone: React and Typescript/Open-Source Software Engineer to join our talented & recently formed creative team. Based in Manchester and fully remote, the team are designing and developing the next generation containerised IT … peer code review. Any exposure to Angular front-end tech is highly advantageous. Are you excited about Golang, Jenkins, Dockers, Kubernetes, architecture, test driven development, API's and everything open source? Then I'd love to hear from you. Superb environment, office, tech stack and ability to learn from one of the greatest in the industry. Please apply More ❯

projects. WE NEED THE CLOUD ARCHITECT TO HAVE...* SC Clearance and eligibility/willingness to undergo DV clearance* Strong knowledge of AWS for delivering cloud-native solutions* Background in open-source technologies* Willingness to travel across the UK as required by business needs TO BE CONSIDERED...Please either apply by clicking online or emailing me directly at . For … with me on LinkedIn-just search Laura Jackson. I look forward to hearing from you. KEY SKILLS:CLOUD ARCHITECT/CLOUD NATIVE/AWS/CLOUD/TOGAF/OPEN-SOURCE/DV CLEARED/DV CLEARANCE/DEVELOPED VETTING/SC CLEARED/SC CLEARANCE/SECURITY CLEARED/SECURITY CLEARANCE More ❯

implement next-generation networking features. Visa sponsorship is available. What youll do: Port embedded Linux systems to new hardware targets using third-party SDKs. Debug and apply patches to open-source components for stability, performance, and compatibility. Resolve build issues and streamline build systems for multiple platforms. Research and integrate emerging networking technologies, including new wireless standards and … programming experience in an embedded Linux environment. Build system expertise (e.g., Buildroot, BitBake, Yocto, or similar). Understanding of networking protocols and their implementation in embedded systems. Experience with open-source patching workflows and upstream contribution processes. Bonus: knowledge of wireless networking, Linux kernel development, or enterprise networking features. Why join us? Youll work on a product suite More ❯

relation to trading standards and online consumer protection. Gather and handle digital evidence in line with legal and forensic standards. Carry out online inspections, research, and intelligence gathering using open-source techniques. Provide evidence in criminal or civil proceedings. Contribute to safeguarding and welfare responsibilities. Additional responsibilities by grade: Grade G: Apply advanced online research techniques and intelligence … to analyse information from multiple sources. Good written and spoken communication skills, including the ability to give evidence in court. Grade progression requires: Training and/or certification in open-source investigation, intelligence gathering, and enforcement procedures (e.g. RIPA/IPA). Increasing knowledge of legislation, digital forensics, and online investigation techniques. Demonstrable experience in trading standards or More ❯

shell or Windows PowerShell. CI and CD flows within an enterprise environment. Agile tooling to support team delivery, such as JIRA, Monday, and other project management systems. Contribution to open-source projects. Open to innovative ideas/experiences and ability to create new ideas, approaches or insights. Seeks opportunities for improvements. Solves problems with general-purpose scripting … for both professional and company values. Excellent attention to detail, highly organised with a proactive approach. Strong analytical ability and innovative problem solving skills. SOLID Principles. Software Design Patterns. Source control (Git). Desired: Experience of regulatory driven projects. Knowledge of Financial Markets, Systems and Over the Counter (OTC) products. Not The Perfect Fit? Concerned that you may not More ❯