1 to 25 of 399 Remote Open Source Jobs in the UK excluding London

We are looking for an experienced engineer who is passionate about developing compilers and managed runtimes and loves open-source software. In this role you will be working on performance analysis and optimisation across a range of runtimes. You'll be part of the bigger CE-SW Runtimes team, whose goal is to improve modern 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 the performance of selected workloads and better support Arm architectural features and CPU … fine-tune existing ones. (e.g. garbage collectors, interpreters, optimisation passes, intrinsics) Own and be accountable for medium/large technical areas of managed runtime or compiler development. Contribute to open-source software projects and engage with open-source community. Collaborate with colleagues across Arm to improve the support for the Arm Architecture and CPUs. Help develop More ❯

skills, with the ability to guide small, inexperienced client teams in a collaborative yet authoritative manner. You will play a key role in shaping and delivering solutions built on open-source technologies, data pipelines, vector stores, and Generative AI (GenAI) capabilities, with an emphasis on integrating Large Language Models (LLMs). Key Responsibilities Leadership & Collaboration: Lead and mentor … non-technical audiences. Build strong relationships with client stakeholders, ensuring alignment on objectives and expectations. Technical Delivery: Design, implement, and document end-to-end data and GenAI solutions using open-source and cloud-based components. Develop and maintain data pipelines, vector databases, and LLM integrations. Configure and optimize solutions on Microsoft Azure Cloud. Ensure adherence to best practices … Required Skills & Experience Proven ability to lead small technical or client teams. Excellent communication and presentation skills. Strong team player with a collaborative, mentoring mindset. Hands-on experience with open-source technologies across front-end and back-end systems. Proficiency in data pipelines, vector stores, and Generative AI/LLM implementations. Working knowledge of Microsoft Azure Cloud services More ❯

What are we looking for? We are looking for a Software Engineer who will be responsible for the following - Developing, maintaining and enhancing software applications for Mobysoft, principally leveraging Open Source stacks (Python, Java & MySQL), AWS Cloud Platform Services (IaaS & PaaS) Mentoring and coaching members of the team to ensure everyone is working to, and improving on high … software applications Problem solve and debug complex software systems to allow defect analysis and fixing Adhere to department procedures and practices, including coding standards, secure coding standards, build processes, source control and development process Ensure the high quality (in terms of security, performance and overall quality) of software applications produced by the department Teamwork Works collaboratively with others and … in accordance with Mobysoft’s values at all times and promotes these both internally and externally. Takes ownership of own personal and professional development Qualifications and skills Required Leveraging Open Source stacks, utilising Python and MySQL , DynamoDB ,Redshift at a senior engineering level. Commercial experience of software development within AWS (IaaS & PaaS) Experience of writing high performance enterprise More ❯

What are we looking for? We are looking for a Software Engineer who will be responsible for the following - Developing, maintaining and enhancing software applications for Mobysoft, principally leveraging Open Source stacks (Python, Java & MySQL), AWS Cloud Platform Services (IaaS & PaaS) Mentoring and coaching members of the team to ensure everyone is working to, and improving on high … software applications Problem solve and debug complex software systems to allow defect analysis and fixing Adhere to department procedures and practices, including coding standards, secure coding standards, build processes, source control and development process Ensure the high quality (in terms of security, performance and overall quality) of software applications produced by the department Teamwork Works collaboratively with others and … in accordance with Mobysoft’s values at all times and promotes these both internally and externally. Takes ownership of own personal and professional development Qualifications and skills Required Leveraging Open Source stacks, utilising Python and MySQL , DynamoDB ,Redshift at a senior engineering level. Commercial experience of software development within AWS (IaaS & PaaS) Experience of writing high performance enterprise More ❯

What are we looking for? We are looking for a Software Engineer who will be responsible for the following - Developing, maintaining and enhancing software applications for Mobysoft, principally leveraging Open Source stacks (Python, Java & MySQL), AWS Cloud Platform Services (IaaS & PaaS) Mentoring and coaching members of the team to ensure everyone is working to, and improving on high … software applications Problem solve and debug complex software systems to allow defect analysis and fixing Adhere to department procedures and practices, including coding standards, secure coding standards, build processes, source control and development process Ensure the high quality (in terms of security, performance and overall quality) of software applications produced by the department Teamwork Works collaboratively with others and … in accordance with Mobysoft’s values at all times and promotes these both internally and externally. Takes ownership of own personal and professional development Qualifications and skills Required Leveraging Open Source stacks, utilising Python and MySQL , DynamoDB ,Redshift at a senior engineering level. Commercial experience of software development within AWS (IaaS & PaaS) Experience of writing high performance enterprise More ❯

software solutions that deliver real-world mission value. You’ll gain hands-on experience across the full software development lifecycle — from concept through delivery — working with modern technologies and open-source tools in secure cloud environments. What You’ll Do Design, develop, and test robust software solutions using modern engineering practices. Work with a range of open-source libraries, frameworks, and components. Build and maintain CI/CD pipelines using tools such as GitLab , ensuring code quality and security. Deploy software systems across public (AWS) and private cloud environments. Engage in all stages of the software lifecycle — from requirements analysis to support and maintenance. Collaborate closely with clients and multidisciplinary teams in an Agile environment. More ❯

software solutions that deliver real-world mission value. You’ll gain hands-on experience across the full software development lifecycle — from concept through delivery — working with modern technologies and open-source tools in secure cloud environments. What You’ll Do Design, develop, and test robust software solutions using modern engineering practices. Work with a range of open-source libraries, frameworks, and components. Build and maintain CI/CD pipelines using tools such as GitLab , ensuring code quality and security. Deploy software systems across public (AWS) and private cloud environments. Engage in all stages of the software lifecycle — from requirements analysis to support and maintenance. Collaborate closely with clients and multidisciplinary teams in an Agile environment. More ❯

software solutions that deliver real-world mission value. You’ll gain hands-on experience across the full software development lifecycle — from concept through delivery — working with modern technologies and open-source tools in secure cloud environments. What You’ll Do Design, develop, and test robust software solutions using modern engineering practices. Work with a range of open-source libraries, frameworks, and components. Build and maintain CI/CD pipelines using tools such as GitLab , ensuring code quality and security. Deploy software systems across public (AWS) and private cloud environments. Engage in all stages of the software lifecycle — from requirements analysis to support and maintenance. Collaborate closely with clients and multidisciplinary teams in an Agile environment. More ❯

software solutions that deliver real-world mission value. You'll gain hands-on experience across the full software development lifecycle - from concept through delivery - working with modern technologies and open-source tools in secure cloud environments. What You'll Do Design, develop, and test robust software solutions using modern engineering practices. Work with a range of open-source libraries, frameworks, and components. Build and maintain CI/CD pipelines using tools such as GitLab , ensuring code quality and security. Deploy software systems across public (AWS) and private cloud environments. Engage in all stages of the software lifecycle - from requirements analysis to support and maintenance. Collaborate closely with clients and multidisciplinary teams in an Agile environment. More ❯

software solutions that deliver real-world mission value. You’ll gain hands-on experience across the full software development lifecycle — from concept through delivery — working with modern technologies and open-source tools in secure cloud environments. What You’ll Do Design, develop, and test robust software solutions using modern engineering practices. Work with a range of open-source libraries, frameworks, and components. Build and maintain CI/CD pipelines using tools such as GitLab , ensuring code quality and security. Deploy software systems across public (AWS) and private cloud environments. Engage in all stages of the software lifecycle — from requirements analysis to support and maintenance. Collaborate closely with clients and multidisciplinary teams in an Agile environment. More ❯

software solutions that deliver real-world mission value. You’ll gain hands-on experience across the full software development lifecycle — from concept through delivery — working with modern technologies and open-source tools in secure cloud environments. What You’ll Do Design, develop, and test robust software solutions using modern engineering practices. Work with a range of open-source libraries, frameworks, and components. Build and maintain CI/CD pipelines using tools such as GitLab , ensuring code quality and security. Deploy software systems across public (AWS) and private cloud environments. Engage in all stages of the software lifecycle — from requirements analysis to support and maintenance. Collaborate closely with clients and multidisciplinary teams in an Agile environment. More ❯

software solutions that deliver real-world mission value. You’ll gain hands-on experience across the full software development lifecycle — from concept through delivery — working with modern technologies and open-source tools in secure cloud environments. What You’ll Do Design, develop, and test robust software solutions using modern engineering practices. Work with a range of open-source libraries, frameworks, and components. Build and maintain CI/CD pipelines using tools such as GitLab , ensuring code quality and security. Deploy software systems across public (AWS) and private cloud environments. Engage in all stages of the software lifecycle — from requirements analysis to support and maintenance. Collaborate closely with clients and multidisciplinary teams in an Agile environment. More ❯

development of new products, maintenance of existing products and support of live services, carrying out development in accordance with the agreed requirements and development. The role requires Knowledge of Open Source & Digital technologies; Familiarity & knowledge in the following concepts/areas: Continuous Integration and Continuous Delivery Agile/Lean Development Dev Ops Infrastructure as Code Automated Deployment of … and verbal communication skills, Problem solving and creativity skills, Honesty and Integrity, Eagerness to learn, Drive and energy, Professional appearance Agile approach and methods; Strong Experience of Agile methodology; Open Source/Digital technologies & solutions Desirable Skills: Technical ability in JAVA, J2ee Experienced in the following languages/tools, must have a proven background of experience - Java, JSON More ❯

development of new products, maintenance of existing products and support of live services, carrying out development in accordance with the agreed requirements and development. The role requires Knowledge of Open Source & Digital technologies; Familiarity & knowledge in the following concepts/areas: Continuous Integration and Continuous Delivery Agile/Lean Development Dev Ops Infrastructure as Code Automated Deployment of … and verbal communication skills, Problem solving and creativity skills, Honesty and Integrity, Eagerness to learn, Drive and energy, Professional appearance Agile approach and methods; Strong Experience of Agile methodology; Open Source/Digital technologies & solutions Desirable Skills: Technical ability in JAVA, J2ee Experienced in the following languages/tools, must have a proven background of experience - Java, JSON More ❯

Environments – Manage environments end-to-end, including server-side infrastructure, hosting, and deployments . ✅ Collaborate Cross-Functionally – Work closely with engineers, archiect and stakeholders to deliver robust solutions. ✅ Leverage Open-Source Tech – Utilize and contribute to modern open-source tools and frameworks. What We’re Looking For Proven experience as a Senior Fullstack PHP Developer working More ❯

Environments – Manage environments end-to-end, including server-side infrastructure, hosting, and deployments . ✅ Collaborate Cross-Functionally – Work closely with engineers, archiect and stakeholders to deliver robust solutions. ✅ Leverage Open-Source Tech – Utilize and contribute to modern open-source tools and frameworks. What We’re Looking For Proven experience as a Senior Fullstack PHP Developer working More ❯

Environments – Manage environments end-to-end, including server-side infrastructure, hosting, and deployments . ✅ Collaborate Cross-Functionally – Work closely with engineers, archiect and stakeholders to deliver robust solutions. ✅ Leverage Open-Source Tech – Utilize and contribute to modern open-source tools and frameworks. What We’re Looking For Proven experience as a Senior Fullstack PHP Developer working More ❯

Environments – Manage environments end-to-end, including server-side infrastructure, hosting, and deployments . ✅ Collaborate Cross-Functionally – Work closely with engineers, archiect and stakeholders to deliver robust solutions. ✅ Leverage Open-Source Tech – Utilize and contribute to modern open-source tools and frameworks. What We’re Looking For Proven experience as a Senior Fullstack PHP Developer working More ❯

Environments – Manage environments end-to-end, including server-side infrastructure, hosting, and deployments . ✅ Collaborate Cross-Functionally – Work closely with engineers, archiect and stakeholders to deliver robust solutions. ✅ Leverage Open-Source Tech – Utilize and contribute to modern open-source tools and frameworks. What We’re Looking For Proven experience as a Senior Fullstack PHP Developer working More ❯

Environments – Manage environments end-to-end, including server-side infrastructure, hosting, and deployments . ✅ Collaborate Cross-Functionally – Work closely with engineers, archiect and stakeholders to deliver robust solutions. ✅ Leverage Open-Source Tech – Utilize and contribute to modern open-source tools and frameworks. What We’re Looking For Proven experience as a Senior Fullstack PHP Developer working More ❯

Founded in 2023, the company has already secured significant early-stage funding, including a $10m Seed round in 2024. The founding team is composed of ex-Palantir and ex-Open AI leaders. They combine deep sector knowledge with cutting-edge design and software engineering expertise to deliver state-of-the-art SaaS capabilities leveraging NLP, Generative AI, and reinforcement … or equivalent experience 5+ years of experience working with cross-functional software development teams Experience shipping and iterating on production-grade software components professionally and/or in the open-source community Ability to write robust, well tested, and well-designed code that frequently gets deployed to users Strong understanding of product development and navigating large codebases Located … in London/Paris and open to working in office Tech Stack: Python FastAPI Typescript + React Open source LLMs On premise deployments Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support Min. 3 months fully paid parental leave 25 days holiday + bonus days for company closure Subsidised lunches More ❯

Founded in 2023, the company has already secured significant early-stage funding, including a $10m Seed round in 2024. The founding team is composed of ex-Palantir and ex-Open AI leaders. They combine deep sector knowledge with cutting-edge design and software engineering expertise to deliver state-of-the-art SaaS capabilities leveraging NLP, Generative AI, and reinforcement … or equivalent experience 5+ years of experience working with cross-functional software development teams Experience shipping and iterating on production-grade software components professionally and/or in the open-source community Ability to write robust, well tested, and well-designed code that frequently gets deployed to users Strong understanding of product development and navigating large codebases Located … in London/Paris and open to working in office Tech Stack: Python FastAPI Typescript + React Open source LLMs On premise deployments Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support Min. 3 months fully paid parental leave 25 days holiday + bonus days for company closure Subsidised lunches More ❯

Founded in 2023, the company has already secured significant early-stage funding, including a $10m Seed round in 2024. The founding team is composed of ex-Palantir and ex-Open AI leaders. They combine deep sector knowledge with cutting-edge design and software engineering expertise to deliver state-of-the-art SaaS capabilities leveraging NLP, Generative AI, and reinforcement … or equivalent experience 5+ years of experience working with cross-functional software development teams Experience shipping and iterating on production-grade software components professionally and/or in the open-source community Ability to write robust, well tested, and well-designed code that frequently gets deployed to users Strong understanding of product development and navigating large codebases Located … in London/Paris and open to working in office Tech Stack: Python FastAPI Typescript + React Open source LLMs On premise deployments Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support Min. 3 months fully paid parental leave 25 days holiday + bonus days for company closure Subsidised lunches More ❯

use cases Prototype multi-agent systems, reasoning engines, and knowledge-graph integrations Implement and fine-tune models for language understanding, decision automation, and data insight generation Evaluate and integrate open-source and commercial AI frameworks into orchestration workflows Ensure AI solutions are explainable, auditable, and compliant with public- sector governance standards Advise on AI strategy, ethical use, and … Understanding of ethical AI, governance frameworks, and public-sector AI standards Familiarity with BPMN/DMN, process orchestration, or workflow automation platforms Experience contributing to AI research, publications, or open-source projects Holds UK security clearance (SC, DV, eDV) What They Offer A company option scheme gives their employees a stake in the organisation theyre building meaningful missions. More ❯

use cases Prototype multi-agent systems, reasoning engines, and knowledge-graph integrations Implement and fine-tune models for language understanding, decision automation, and data insight generation Evaluate and integrate open-source and commercial AI frameworks into orchestration workflows Ensure AI solutions are explainable, auditable, and compliant with public- sector governance standards Advise on AI strategy, ethical use, and … Understanding of ethical AI, governance frameworks, and public-sector AI standards Familiarity with BPMN/DMN, process orchestration, or workflow automation platforms Experience contributing to AI research, publications, or open-source projects Holds UK security clearance (SC, DV, eDV) What They Offer A company option scheme gives their employees a stake in the organisation theyre building meaningful missions. More ❯