1 to 25 of 322 Open Source Jobs in the UK excluding London

Senior Software Engineer

Hiring Organisation
Oscar Technology
Location
Cambridge, Cambridgeshire, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £65,000 per annum
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

Hiring Organisation
Oscar Associates (UK) Limited
Location
Cambridge, Cambridgeshire, East Anglia, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£65,000
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 ...

Agentic AI Engineer Kyndryl Data & AI

Hiring Organisation
Kyndryl
Location
South East, United Kingdom
Employment Type
Permanent
possible and unleash your potential. Why this role matters Youll be part of a fast-moving group shaping Kyndryls Agentic AI Framework an open, modular system that connects data pipelines, LLMs, reasoning engines and orchestration layers to power autonomous solutions across industries. Were not just imagining the future … from proof-of-concepts to AI-native operations Collaborative innovation: Pair with data scientists, architects and platform engineers to deliver integrated, client-ready systems Open-source mindset: Contribute to the evolution of our Agentic AI framework and the wider AI ecosystem What youll do Design and build agentic ...

Software Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Nottingham, Nottinghamshire, East Midlands, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£50,000
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 ...

Embedded Software Engineer

Hiring Organisation
KO2 Embedded Recruitment Solutions LTD
Location
Manchester, North West, United Kingdom
Employment Type
Permanent
Salary
£60,000
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 ...

Shopify Developer

Hiring Organisation
Commercial
Location
Kettering, Northamptonshire, East Midlands, United Kingdom
Employment Type
Permanent
Salary
£50,000
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 ...

OSINT Specialist

Hiring Organisation
Tadaweb
Location
Poole, England, United Kingdom
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. ...

Senior ML Research Engineer

Hiring Organisation
microTECH Global LTD
Location
Egham, England, United Kingdom
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 ...

Solution Architect - National Security

Hiring Organisation
Forward Role Secure
Location
Slough, Berkshire, UK
Employment Type
Full-time
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 ...

Senior Software Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Birmingham, West Midlands, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£65,000
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/ ...

Senior Software Engineer

Hiring Organisation
Oscar Technology
Location
Hockley, Birmingham, West Midlands, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £65,000 per annum
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/ ...

Full Stack Software Developer - Java - Mostly remote working

Hiring Organisation
Circle Recruitment
Location
Warrington, Cheshire, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £60,000 per annum
Full Stack Software Developer - Java - Mostly remote working Are you a passionate Software Developer with a keen interest in open-source technology, particularly Java, who wants to work on innovative real-time solutions? We're seeking a Software Engineer with strong Java and SQL skills to join … would be some DevOps knowledge This dynamic software team of six is focussed on developing cutting-edge solutions. You'll work with the latest open-source technologies to create scalable, high-performance applications that power real-time solutions. Hands-On Development - Work on new projects from the ground ...

Embedded Linux Software Engineer

Hiring Organisation
Platform Recruitment Limited
Location
Cambridge, Cambridgeshire, East Anglia, United Kingdom
Employment Type
Permanent
Salary
£75,000
Embedded Linux Engineer : Porting the OS, integrating with ODM software Fixing build issues when moving to new platforms and applying patches to debug open-source software Researching technical growth Requirements: Highly experienced with embedded build systems, preferably buildroot, OpenWRT, or other WRT-Variants Experienced with CLANG and very … confident working with patches on open source software Strong understanding of network protocols Desirable skills for an Embedded Software Engineer: Experience developing Linux kernel modules and using the kernel build system Knowledge of the Wireless and Linux network stack Experience managing the process from a reference board ...

Senior Software Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Cambridge, Cambridgeshire, United Kingdom
Employment Type
Permanent
Salary
GBP 65,000 Annual
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 ...

Compiler Engineer - LLVM / C++

Hiring Organisation
European Tech Recruit
Location
Cambridge, Cambridgeshire, UK
Employment Type
Full-time
/C++ programming skills Passion for compiler development and low-level optimization Basic understanding of CPU architecture BSc/MSc in Computer Science preferred Open-source contributions and strong practical skills are a plus Keywords LLVM/C++/compiler optimization/xPU/CPU architecture/…/AI/open-source/R&D/CPU/High Performance Computing/Artificial Intelligence/Compiler/Compiler Engineer If you are interested in this Compiler Engineer position, please send a copy of your CV to ts@eu-recruit.com By applying to this role ...

Backend Engineer (Distributed Systems Engineer)

Hiring Organisation
TechChain Talent
Location
Slough, Berkshire, UK
Employment Type
Full-time
that scale across thousands of nodes • Performance-critical modules for consensus, networking, and data pipelines • Internal tooling for observability, testing, and simulation • Contributions to open-source infra and protocol-level primitives What You Bring • 5+ years of backend engineering experience in systems-level environments • Deep knowledge of distributed … cloud-native infra • Familiarity with blockchain, cryptographic protocols, or decentralized coordination Bonus Points • Experience in zero-knowledge systems, MPC, or verifiable computation • Contributions to open-source infra projects • Prior work in Layer 1 or Layer 2 blockchain development Why Join • Stealth-stage impact with protocol-grade ownership • Competitive ...

Embedded Linux Engineer

Hiring Organisation
Platform Recruitment
Location
CB3, Cambridge, Cambridgeshire, United Kingdom
Employment Type
Permanent
Salary
£60000 - £70000/annum
Embedded Linux Engineer : Porting the OS, integrating with ODM software Fixing build issues when moving to new platforms and applying patches to debug open-source software Researching technical growth Requirements: Highly experienced with embedded build systems, preferably buildroot, OpenWRT, or other WRT-Variants Experienced with CLANG and very … confident working with patches on open source software Strong understanding of network protocols Desirable skills for an Embedded Linux Engineer: Experience developing Linux kernel modules and using the kernel build system Knowledge of the Wireless and Linux network stack Experience managing the process from a reference board ...

Oracle DBA

Hiring Organisation
Sanderson Government and Defence
Location
Warwickshire, West Midlands, United Kingdom
Employment Type
Contract
/SQL. Manage backup and recovery strategies using RMAN. Support and maintain Oracle WebLogic environments. Develop and maintain reporting solutions using OBIEE. Work with open-source platforms such as Liferay and Oracle development frameworks including ADF and APEX. Required Skills & Experience In-depth knowledge of Oracle Database Architecture … Business Suite R12 setup and administration. Proficiency in SQL*Plus, PL/SQL, and scripting for automation. Experience with Oracle WebLogic, OBIEE, and open-source tools like Liferay. Familiarity with Oracle ADF and APEX development frameworks. Reasonable Adjustments: Respect and equality are core values to us. ...

Staff Firmware Engineer

Hiring Organisation
Rise Technical Recruitment
Location
Bristol, United Kingdom
Employment Type
Permanent
Salary
£88000 - £115000/annum Progression, Equity, Pay Reviews
infrastructure environments. You'll be comfortable owning complex defect management, working with standards such as UEFI and ACPI, and engaging directly with customers and open-source communities around infrastructure platform solutions. This is a fantastic opportunity to join a truly world-leading organisation, work on technology that sits … UEFI/ACPI and structured defect management for complex systems (ideally server/infrastructure) *Familiar with RAS, hypervisors, CXL, power management and security; open-source experience highly beneficial Reference Number: BBBH(phone number removed) To apply for this role or to be considered for further roles, please click ...

Staff Firmware Engineer

Hiring Organisation
Rise Technical Recruitment Limited
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Permanent
infrastructure environments. You'll be comfortable owning complex defect management, working with standards such as UEFI and ACPI, and engaging directly with customers and open-source communities around infrastructure platform solutions. This is a fantastic opportunity to join a truly world-leading organisation, work on technology that sits … UEFI/ACPI and structured defect management for complex systems (ideally server/infrastructure) *Familiar with RAS, hypervisors, CXL, power management and security; open-source experience highly beneficial Reference Number: BBBH266754 To apply for this role or to be considered for further roles, please click 'Apply ...

Java Engineer

Hiring Organisation
Profile 29
Location
South East London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£60,000
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 ...

Java Engineer

Hiring Organisation
Profile 29
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £60,000 per annum
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 ...

Principal / Associate Geospatial Developer

Hiring Organisation
Tetra Tech
Location
Manchester, North West, United Kingdom
Employment Type
Permanent
Edge Technology: Get hands-on with the full Esri product suite (ArcGIS Pro, Enterprise, AGOL), Microsoft Azure, MS SQL Server, PostgreSQL and the latest open-source platforms - plus AI/ML frameworks that power truly intelligent mapping and analytics. Diverse, High-Impact Projects: From single-discipline proofs ...

Principal / Associate Geospatial Developer

Hiring Organisation
Tetra Tech
Location
Southampton, Hampshire, South East, United Kingdom
Employment Type
Permanent
Edge Technology: Get hands-on with the full Esri product suite (ArcGIS Pro, Enterprise, AGOL), Microsoft Azure, MS SQL Server, PostgreSQL and the latest open-source platforms - plus AI/ML frameworks that power truly intelligent mapping and analytics. Diverse, High-Impact Projects: From single-discipline proofs ...

Senior Software Engineer

Hiring Organisation
Candour
Location
Manchester Area, United Kingdom
NoSQL • Cloud & Infrastructure: AWS, Azure, GCP, Docker, Kubernetes, CI/CD • Messaging & APIs: Kafka, RabbitMQ, RESTful, GraphQL • Other: Git, large‐scale distributed systems, opensource contributions 3-stage interview process. Message me with any further questions and if you want to know more details before applying ...