1 to 25 of 204 Open Source Jobs in the UK

Open Source Adoption Lead Technology Risk & OSS Compliance Lead | Open Source Program Office London £100k + £18k Bonus & Top Benefits Open Source Strategy, Governance & Risk Lead. The role is focused on defining, implementing, and overseeing enterprise-wide controls for open-source software … + AI governance, and compliance within highly regulated environments. Key Responsibilities: Design and maintain the Open Source Software (OSS) Control Framework and Risk Model to ensure compliant adoption and contribution of open-source components. Architect automated policy enforcement systems (Python, GitHub Actions) integrating SCA and SBOM ...

Senior Software Engineer Salary: £55,000 - £65,000 Location: Cambridge (Hybrid - 2 days per week in office) Industry: Open-Source Software/Data & Collaboration Platforms The Opportunity I'm recruiting for a fast-growing Cambridge-based technology company that's making waves in open-source software … team growth. You'll be joining an engineering team of around 10 developers, working in a collaborative environment where mentorship, technical excellence, and open-source contributions are genuinely encouraged. What You'll Be Working On Designing, developing, and maintaining scalable open-source applications Building new features ...

Senior Software Engineer Salary: £55,000 - £65,000 Location: Cambridge (Hybrid - 2 days per week in office) Industry: Open-Source Software/Data & Collaboration Platforms The Opportunity I'm recruiting for a fast-growing Cambridge-based technology company that's making waves in open-source software … team growth. You'll be joining an engineering team of around 10 developers, working in a collaborative environment where mentorship, technical excellence, and open-source contributions are genuinely encouraged. What You'll Be Working On Designing, developing, and maintaining scalable open-source applications Building new features ...

Lead Software Engineer Salary: £70,000 - £80,000 Location: Leicester (Hybrid - 2 days per week in office: Tuesday & Thursday) Industry: Open-Source/Enterprise Web Applications The Opportunity I'm recruiting for an ambitious Leicester-based tech company that's expanding its engineering leadership team. This role … mentor a team, and deliver enterprise-grade solutions. You'll lead a team of around 15 developers, working in a collaborative environment that values open-source contributions, code quality, and professional growth. What You'll Be Working On Leading the design, development, and maintenance of scalable web applications ...

Level Software Engineer Salary: £45,000 - £55,000 Location: Oxford (Hybrid - 3 days per week in office) Industry: Open-Source Software/Digital Platforms The Opportunity I'm recruiting for an innovative Oxford-based tech company that's expanding its engineering team to support its growing suite … open-source digital platforms. This role is perfect for a mid-level Software Engineer who wants to take on exciting projects while benefiting from mentorship and guidance from a supportive senior engineering team. You'll join an engineering team of around 12 developers, working in a collaborative environment ...

Level Software Engineer Salary: £45,000 - £55,000 Location: Derby (Hybrid - 1 day per week in office) Industry: Open-Source/Cloud-Based Platforms The Opportunity I'm recruiting for a forward-thinking Derby-based tech company that's expanding its engineering team. This role is perfect … level Software Engineer who wants to work on scalable open-source applications while learning from a supportive senior team. You'll join a team of around 10 developers, working in a collaborative environment where code quality, innovation, and professional development are genuinely encouraged. What You'll Be Working ...

Improving system performance, reliability, and security Projects include API-first platforms, data-driven services, and internal tooling that supports customer-facing applications. Tech Stack (Open-Source) Backend: Node.js (TypeScript) Frameworks: Express or NestJS APIs: REST, GraphQL Databases: PostgreSQL, MongoDB Infrastructure: Linux, Docker, CI/CD pipelines Cloud … Commercial experience as a Software Engineer Strong experience building backend services with Node.js Familiarity with TypeScript and modern JavaScript practices Experience working with open-source technologies in production Comfortable owning features from development through to delivery A collaborative mindset and experience working in Agile teams Salary & Benefits Salary ...

Industrial Automation. What You'll Need Proficiency in C programming Experience with one or more of: C++, Python, Rust, or Java Experience with open source technology suite Knowledge of modern software development practices Strong background in Linux environments About the Team You'll be working alongside passionate engineers … modern design practices. The role offers involvement across the full software development lifecycle, from concept through to delivery. Experience with embedded software and open-source technologies will help your application stand out. What We're Looking For This position is ideal for Software Engineers who: Have a genuine ...

Automation. What You'll Need Strong proficiency in C Experience with at least one of the following: C++, Python, Rust, or Java Familiarity with open-source technology stacks Understanding of modern software development practices Solid experience working in Linux environments About the Team You'll join a passionate … role, you'll work across the full software development lifecycle - from concept and design through to implementation and deployment. Experience with embedded systems and open-source technologies will give your application an edge. Who We're Looking For This role will suit Software Engineers who: Are genuinely enthusiastic ...

performing ecommerce experiences. Key Responsibilities Shopify Development Maintain, optimise, and enhance existing Shopify stores. Build new websites, storefronts, and landing pages using Shopify and open-source frameworks. Custom-code Shopify themes, templates, and features using Liquid. Implement and configure third-party integrations, apps, and payment gateways. Ensure fast … Diagnose and resolve technical issues across all company websites. Web Development Build and maintain in-house websites using HTML, CSS, JavaScript, PHP, or similar open-source technologies. Develop custom web functionality and integrations where required. Improve site architecture, navigation, and overall user experience. Test and deploy updates ...

performing ecommerce experiences. Key Responsibilities Shopify Development Maintain, optimise, and enhance existing Shopify stores. Build new websites, storefronts, and landing pages using Shopify and open-source frameworks. Custom-code Shopify themes, templates, and features using Liquid. Implement and configure third-party integrations, apps, and payment gateways. Ensure fast … Diagnose and resolve technical issues across all company websites. Web Development Build and maintain in-house websites using HTML, CSS, JavaScript, PHP, or similar open-source technologies. Develop custom web functionality and integrations where required. Improve site architecture, navigation, and overall user experience. Test and deploy updates ...

mind with the right information at the right time. We are a scale-up technology company that provides an operating system that makes OSINT (Open Source Intelligence) investigations more effective and efficient. Tadaweb is known within the industry for its "nothing is impossible" attitude and family-first culture … users, their bosses and key customer stakeholders. You will deliver training sessions on our platform and mentor our customers to deliver value in open-source data collection and analysis. You will be problem solving daily and helping customers with use cases that push what is technically possible. ...

optimization to runtime integration of AI models on-device. Toolchain Evaluation: Compare deployment toolchains and runtimes for latency, memory, and accuracy trade-offs. Open-Source Contribution: Enhance open-source libraries by adding new features and improving capabilities. Experimentation & Analysis: Conduct rigorous experiments and statistical analysis ...

platform functionality using Python, building APIs and integrations to extend capabilities for diverse client needs. ● Design and implement LLM-powered applications and workflows using open source models such as Llama, Qwen and Gemma, as well as those online models from OpenAI, Gemini, etc. ● Build AI agents with tool … examples of specialised areas that would be valuable. Deep expertise in some of these areas is preferred over surface-level knowledge across all domains. ● Open source LLMs (Llama, Qwen, Gemma, GPT OSS) and local deployment strategies. ● Frameworks and protocols such as Model Context Protocol (MCP) or Agent ...

engineering, model selection, handling imbalanced data, choosing and interpreting metrics Experience with PyTorch or TensorFlow GenAI specific Hands on experience with LLM APIs or open source models such as Llama or Mistral Experience building RAG systems with vector databases such as FAISS, Pinecone or Weaviate Ability to evaluate … bash Experience with BI tools such as Looker or Tableau Prior consulting experience or leading client projects end to end Contributions to open source, conference talks or published papers that show your ability to share ideas and influence the wider community Got a background that fits ...

engineering, model selection, handling imbalanced data, choosing and interpreting metrics Experience with PyTorch or TensorFlow GenAI specific Hands on experience with LLM APIs or open source models such as Llama or Mistral Experience building RAG systems with vector databases such as FAISS, Pinecone or Weaviate Ability to evaluate … bash Experience with BI tools such as Looker or Tableau Prior consulting experience or leading client projects end to end Contributions to open source, conference talks or published papers that show your ability to share ideas and influence the wider community #DataAIConsultant #DataConsulting #AIConsultant #GenAIConsultant #HiringNow #DataScience #MachineLearning ...

engineering, model selection, handling imbalanced data, choosing and interpreting metrics Experience with PyTorch or TensorFlow GenAI specific Hands on experience with LLM APIs or open source models such as Llama or Mistral Experience building RAG systems with vector databases such as FAISS, Pinecone or Weaviate Ability to evaluate … bash Experience with BI tools such as Looker or Tableau Prior consulting experience or leading client projects end to end Contributions to open source, conference talks or published papers that show your ability to share ideas and influence the wider community #DataAIConsultant #DataConsulting #AIConsultant #GenAIConsultant #HiringNow #DataScience #MachineLearning ...

running smoothly. What You Will Be Doing Systems & Infrastructure Management Managing deployment, maintenance and performance of server and system infrastructure across both hardware and open-source software. Monitoring system performance, resolving issues and driving long-term stability and scalability. Designing and developing new systems and services in collaboration … Driving licence Strong experience with Linux OS (e.g. Debian, RedHat) and scripting Proficiency with SQL and NoSQL databases Familiarity with Git and modern source-control practices. Comfortable working with a wide range of open-source tools and technologies Ability to manage regular system patching and automate processes ...

digital services that support the UK’s national security mission. Our client delivers high-performance technology solutions for the UK Public Sector, using modern open-source tooling and operating within Agile and DevOps environments. This role is ideal for someone passionate about designing robust, scalable architectures and influencing … Required exposure You’ll have significant hands-on experience across several of the following areas: End-to-end technical and solution architecture design Modern open-source technologies Cloud platforms (AWS preferred) Security principles and best practice IAM, OAuth, Cognito, OIDC (highly beneficial) Containerisation and orchestration (Docker, Kubernetes) DevOps ...

Startup London (fully onsite) £120-150k + Bonus Are you keen to work for a rapidly scaling fintech startup who's AI-native, open-source technology is revolutionising banking infrastructure? Are you keen to work with the most cutting edge technologies in the DevOps space, withing … genuinely AI first prod enviornment? My client is creating the first open-source "Thin Ledger" to replace legacy core systems with a modern, event-driven platform powered by Golang, Kafka and multi-region Databases. They are now seeking a Lead Platform Engineer to own platform engineering ...

office) Industry: Sustainable Technology/Data & Analytics Platforms The Opportunity I'm recruiting for a growing Birmingham-based tech company that's building open, scalable software used to power data-driven platforms in the sustainability and energy space. This is an exciting opportunity for a Senior Software Engineer … Working closely with Product, Design, and Data teams Projects include customer-facing dashboards, data ingestion services, internal tooling, and API-first platforms. Tech Stack (Open-Source) Backend: PHP (Laravel), Python Frontend: JavaScript, TypeScript, React APIs: REST, GraphQL Databases: PostgreSQL, MySQL, Redis Infrastructure: Linux, Docker, Kubernetes, CI/ ...

office) Industry: Sustainable Technology/Data & Analytics Platforms The Opportunity I'm recruiting for a growing Birmingham-based tech company that's building open, scalable software used to power data-driven platforms in the sustainability and energy space. This is an exciting opportunity for a Senior Software Engineer … Working closely with Product, Design, and Data teams Projects include customer-facing dashboards, data ingestion services, internal tooling, and API-first platforms. Tech Stack (Open-Source) Backend: PHP (Laravel), Python Frontend: JavaScript, TypeScript, React APIs: REST, GraphQL Databases: PostgreSQL, MySQL, Redis Infrastructure: Linux, Docker, Kubernetes, CI/ ...

disaster recovery. • Experience of setting up CI/CD pipelines including production deployments • Configuration management tooling. • Package/dependency management solutions. • Commercial or open source observability tooling. • Comfortable provisioning platforms through IaC tools. • Robust understanding of on-premise infrastructure. • The ability to apply DevOps tools and practices … inform you that we are unable to provide detailed feedback to candidates who have not been shortlisted (for further consideration). Job Segment: Cloud, Open Source, Sustainability, Engineer, Banking, Technology, Energy, Engineering, Finance ...

Maze is partnering with a stealth-mode startup that's rebuilding core banking from the ground up. They’re creating the world’s first open-source, AI-native "Thin Ledger" —set to replace legacy infrastructure at Tier 1 banks. We're looking for a Senior Engineer specialising … five-nines reliability Contribute to backend, DevOps, and CI/CD decision-making Embed AI into engineering workflows & ops Self-motivated, problem-solving mindset; open to non-traditional backgrounds. You should have: Expert backend skill ideally in Golang, or Rust, Zig or C. Deep expereince building distributed systems from ...

start. Designing and implementing test frameworks across UI and API. Carrying out both manual and automated testing, supported by exploratory testing where needed. Using open-source tools such as Selenium, Cypress, Playwright, Cucumber, Robot Framework and Rest Assured. Applying agile and DevOps practices including TDD, BDD and continuous … Skills Needed: Strong background in manual and automation testing across complex solutions. Proven experience building and maintaining automated test frameworks. Hands-on knowledge of open-source testing tools and frameworks. Comfortable working in agile delivery teams and contributing to best practice. Proactive, collaborative mindset with a passion ...