1 to 25 of 68 Remote/Hybrid Open Source Jobs in the UK

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 ...

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 ...

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 ...

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/ ...

boxed into a narrow development function. What You ll Be Doing - Magento Platform Ownership Own the stability, performance and evolution of our Magento 2 (Open Source) platform. Design, build and maintain custom Magento modules and backend functionality. Diagnose and resolve production issues quickly and effectively Plan and deliver … upskill e-commerce team members to reduce single-point dependency. W hat We re Looking For Essential Experience Strong commercial experience with Magento 2 (Open Source) Excellent PHP and MySQL skills Deep understanding of Magento architecture, APIs and ORM Experience integrating Magento with ERP systems (NAV/Business ...

boxed into a narrow development function. What You’ll Be Doing - Magento Platform Ownership Own the stability, performance and evolution of our Magento 2 (Open Source) platform. Design, build and maintain custom Magento modules and backend functionality. Diagnose and resolve production issues quickly and effectively Plan and deliver … upskill e-commerce team members to reduce single-point dependency. W hat We’re Looking For Essential Experience Strong commercial experience with Magento 2 (Open Source) Excellent PHP and MySQL skills Deep understanding of Magento architecture, APIs and ORM Experience integrating Magento with ERP systems (NAV/Business ...

focused on user outcomes, quality, and reliability Build AI workflows covering image generation, guidance models, and agent-like systems Fine tune or train lightweight open source models, including LoRAs and smaller LLMs Implement guardrails, safety mechanisms, and behaviour constraints for LLM-based features Develop evaluation and validation approaches … shipping user-facing software. Hands-on experience with modern AI tooling such as prompting, fine tuning, model configuration, or inference pipelines Comfort working with open source models and related tooling Ability to break down ambiguous problems and deliver practical, testable solutions Willingness to experiment quickly, measure results ...

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 click apply for full job details ...

track record of collaborating with senior leaders on strategic initiatives A strong understanding of advanced current and emerging technologies that can create a source of competitive advantage Strong analytical, problem solving and communication skills (both oral and written), with an ability to generate insights across multiple sources of data. … Analytics capability (GA360, Adobe etc) as well as Cloud experience (Azure, AWS, GCP) and PowerBI. Python/R also advantageous alongside some knowledge of open source data An open-minded, flexible and positive attitude toward new challenges, with a willingness to embrace new technologies and business change ...

ontology-based data models Familiarity with controlled or cross-domain data sharing patterns Experience with Infrastructure-as-Code (e.g. Terraform, CloudFormation) Exposure to open-source data platforms or frameworks Contractor Profile Able to deliver independently with minimal supervision Comfortable working within structured delivery frameworks Strong analytical and problem ...

reactive programming (e.g., Reactor, Coroutines) Domain-Driven Design (DDD) exposure Experience in data streaming technologies (Kafka, Pulsar, etc.) Interest in contributing to internal IP, open-source work, or technical communities What We Offer Competitive salary + bonus Flexible working arrangements Private health, pension, and generous holiday allowance Opportunities ...

knowledge graphs or graph DBs Experience with RDF, SPARQL, ontologies Familiarity with cross-domain data flow patterns Infrastructure-as-Code (Terraform, CloudFormation) Exposure to open-source data frameworks The Ideal Contractor Operates independently with minimal oversight Pragmatic, delivery-driven, and quality-focused Excellent communication across technical & non-technical ...

case-management or service-orchestration platforms Understanding of agentic AI capabilities and how they can complement workflow automation Experience mentoring developers or contributing to open-source Camunda extensions Already holding UK security clearance (SC, DV, eDV) What They Offer A company option scheme gives their employees a stake ...

case-management or service-orchestration platforms Understanding of agentic AI capabilities and how they can complement workflow automation Experience mentoring developers or contributing to open-source Camunda extensions Already holding UK security clearance (SC, DV, eDV) What They Offer A company option scheme gives their employees a stake ...