1 to 25 of 38 Remote Open Source Jobs in the City of London

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 ❯

Go Developer Location: London Bridge Hybrid: 1x every fortnight We are working with a small, technical team based in London Bridge to build innovative solutions, working with cutting-edge, open-source platform frameworks. As a Senior Go Developer, you will work on complex distributed systems, shaping modern development, contributing to product design and working closely with customers to … improving engineering efficiency Experience in working in Agile environments London Bridge, Hybrid (1 day in office every 2 weeks) Salary (£90-120k DOE) Culture: Forward thinking, engineering-led, open-source focused. Apply now for more information. More ❯

scale, data-driven applications Product-focused approach, ideally within fast-paced tech organisations (start-ups or scale-ups) Knowledge of Kafka, Cassandra, gRPC, and microservices is a strong advantage Open-source contributions are beneficial If you’re a Senior Go Developer looking for a challenging 6-month contract with a forward-thinking tech company, apply today. We are More ❯

scale, data-driven applications Product-focused approach, ideally within fast-paced tech organisations (start-ups or scale-ups) Knowledge of Kafka, Cassandra, gRPC, and microservices is a strong advantage Open-source contributions are beneficial If you’re a Senior Go Developer looking for a challenging 6-month contract with a forward-thinking tech company, apply today. We are More ❯

logging) Confident debugging and resolving issues in complex distributed systems Product-oriented mindset with a collaborative approach to improving developer experience Bonus: experience with Kafka, gRPC, or contributing to open-source projects If you’re a Senior Platform Engineer who thrives on building tools and systems that empower developers and accelerate delivery, apply today. The client is looking More ❯

logging) Confident debugging and resolving issues in complex distributed systems Product-oriented mindset with a collaborative approach to improving developer experience Bonus: experience with Kafka, gRPC, or contributing to open-source projects If you’re a Senior Platform Engineer who thrives on building tools and systems that empower developers and accelerate delivery, apply today. The client is looking More ❯

sits within the fast-paced Connectivity Software team, part of Sky Home Communications. We lead development on the RDK WAN Manager and Broadband Application Framework-key components of the open-source RDK-B platform used in millions of broadband devices worldwide. As a Software Architect , you'll define the software component architecture for our connectivity products, ensuring robust … environments with the ability to manage multiple priorities effectively. Creative and analytical thinker, with meticulous attention to detail and strong problem-solving and debugging skills. Experience with RDK-B, Open WRT, or PRPL WRT is a significant advantage. Team overview Product Delivery Want to deliver brilliant products and unmissable entertainment that grips millions of households? Our 1000 strong, Product More ❯

modelling, prototyping, and evaluation Strong software engineering skills with a focus velocity Excellent communication skills and the ability to flourish in a team Located in London/Paris and open to working in office Tech Stack: Python FastAPI Python, Typescript, or React Open source LLMs Building for production Benefits Currently Offered (likely to improve as company grows More ❯

modelling, prototyping, and evaluation Strong software engineering skills with a focus velocity Excellent communication skills and the ability to flourish in a team Located in London/Paris and open to working in office Tech Stack: Python FastAPI Python, Typescript, or React Open source LLMs Building for production Benefits Currently Offered (likely to improve as company grows More ❯

sits within the fast-paced Connectivity Software team, part of Sky Home Communications. We lead development on the RDK WAN Manager and Broadband Application Framework-key components of the open-source RDK-B platform used in millions of broadband devices worldwide. As a Software Architect , you'll define the software component architecture for our connectivity products, ensuring robust … environments with the ability to manage multiple priorities effectively. Creative and analytical thinker, with meticulous attention to detail and strong problem-solving and debugging skills. Experience with RDK-B, Open WRT, or PRPL WRT is a significant advantage. Team overview Product Delivery Want to deliver brilliant products and unmissable entertainment that grips millions of households? Our 1000 strong, Product More ❯

sits within the fast-paced Connectivity Software team, part of Sky Home Communications. We lead development on the RDK WAN Manager and Broadband Application Framework-key components of the open-source RDK-B platform used in millions of broadband devices worldwide. As a Software Architect , you'll define the software component architecture for our connectivity products, ensuring robust … environments with the ability to manage multiple priorities effectively. Creative and analytical thinker, with meticulous attention to detail and strong problem-solving and debugging skills. Experience with RDK-B, Open WRT, or PRPL WRT is a significant advantage. Team overview Product Delivery Want to deliver brilliant products and unmissable entertainment that grips millions of households? Our 1000 strong, Product More ❯

sits within the fast-paced Connectivity Software team, part of Sky Home Communications. We lead development on the RDK WAN Manager and Broadband Application Framework-key components of the open-source RDK-B platform used in millions of broadband devices worldwide. As a Software Architect , you'll define the software component architecture for our connectivity products, ensuring robust … environments with the ability to manage multiple priorities effectively. Creative and analytical thinker, with meticulous attention to detail and strong problem-solving and debugging skills. Experience with RDK-B, Open WRT, or PRPL WRT is a significant advantage. Team overview Product Delivery Want to deliver brilliant products and unmissable entertainment that grips millions of households? Our 1000 strong, Product More ❯

sits within the fast-paced Connectivity Software team, part of Sky Home Communications. We lead development on the RDK WAN Manager and Broadband Application Framework-key components of the open-source RDK-B platform used in millions of broadband devices worldwide. As a Software Architect , you'll define the software component architecture for our connectivity products, ensuring robust … environments with the ability to manage multiple priorities effectively. Creative and analytical thinker, with meticulous attention to detail and strong problem-solving and debugging skills. Experience with RDK-B, Open WRT, or PRPL WRT is a significant advantage. Team overview Product Delivery Want to deliver brilliant products and unmissable entertainment that grips millions of households? Our 1000 strong, Product More ❯

clients and colleagues. Support business development by shaping proposals and solution options. What you’ll bring: Proven expertise in AWS for delivering complex cloud-native applications. Strong background in open-source technologies, APIs, and secure, scalable systems . Experience with microservices, domain-driven design, event sourcing, and containerisation . Background in software development (highly desirable). Familiarity with More ❯

clients and colleagues. Support business development by shaping proposals and solution options. What you’ll bring: Proven expertise in AWS for delivering complex cloud-native applications. Strong background in open-source technologies, APIs, and secure, scalable systems . Experience with microservices, domain-driven design, event sourcing, and containerisation . Background in software development (highly desirable). Familiarity with More ❯

edge AI features to life Continuously research and prototype new techniques in AI orchestration and agentic reasoning What Were Looking For Proven experience with LangGraph (bonus: contributions to the open-source project) Strong background in Python, LangChain, OpenAI APIs, and LLM architectures Familiarity with vector databases, retrieval-augmented generation (RAG), and prompt engineering Understanding of software design principles More ❯

understanding of AWS services such as S3 and Redshift, particularly around storage, computation and security. Familiarity with modern BI tools such as Power BI or AWS QuickSight. Experience with open-source data stack tools like Airflow, DBT, Airbyte or similar. Strong grasp of software development best practices and CI/CD processes. Skilled in performance tuning, testing, and More ❯

understanding of AWS services such as S3 and Redshift, particularly around storage, computation and security. Familiarity with modern BI tools such as Power BI or AWS QuickSight. Experience with open-source data stack tools like Airflow, DBT, Airbyte or similar. Strong grasp of software development best practices and CI/CD processes. Skilled in performance tuning, testing, and More ❯

AWS SageMaker, or Azure AI. Knowledge of AI security, model explainability, and Responsible AI principles. Experience building or integrating voice-enabled chatbots and multi-modal systems. Experience working with open-source AI tools and hardware like GROQ is a plus. Hands-on experience deploying AI services in WordPress or similar CMS environments. Excellent communication skills and ability to More ❯

AWS SageMaker, or Azure AI. Knowledge of AI security, model explainability, and Responsible AI principles. Experience building or integrating voice-enabled chatbots and multi-modal systems. Experience working with open-source AI tools and hardware like GROQ is a plus. Hands-on experience deploying AI services in WordPress or similar CMS environments. Excellent communication skills and ability to More ❯

and developing your technical skills as the company scales What Youll Bring A STEM degree (or equivalent qualification) Evidence of your passion for technology whether through personal projects, internships, open-source contributions, or hackathons Familiarity with at least one programming language (JavaScript, TypeScript, Python, etc.) Willingness to learn React, TypeScript, Next.js, Tailwind CSS, and AWS A collaborative mindset More ❯

developing your technical skills as the company scales What You’ll Bring A STEM degree (or equivalent qualification) Evidence of your passion for technology — whether through personal projects, internships, open-source contributions, or hackathons Familiarity with at least one programming language (JavaScript, TypeScript, Python, etc.) Willingness to learn React, TypeScript, Next.js, Tailwind CSS, and AWS A collaborative mindset More ❯

developing your technical skills as the company scales What You’ll Bring A STEM degree (or equivalent qualification) Evidence of your passion for technology — whether through personal projects, internships, open-source contributions, or hackathons Familiarity with at least one programming language (JavaScript, TypeScript, Python, etc.) Willingness to learn React, TypeScript, Next.js, Tailwind CSS, and AWS A collaborative mindset More ❯

CSS methodologies (Tailwind, CSS Modules, CSS-in-JS), and modern testing frameworks. Passion for developer experience, tooling, and mentoring. Degree in Computer Science or equivalent experience. Bonus points for: Open source contributions to front-end tooling, design systems, or data-visualisation libraries. Experience with WebSockets, PWAs, offline support, or design-token pipelines. How They Work Speed with craftsmanship More ❯