1 to 25 of 46 Remote Open Source Jobs in London

the core of our platform: our distributed database engine, integrated AI capabilities, and high-availability solutions. This role sits at the intersection of distributed systems, OLTP, high availability, and open-source innovation. You will contribute to the product direction for our scalable distributed architecture, our core MariaDB-based OLTP server, and our synchronous high-availability offerings powered by … of the developer and the enterprise architect, translating complex challenges into a product roadmap that pushes the boundaries of what a database can do. You will collaborate with the open-source community and provide key product support for our core MariaDB-based OLTP server. Your work will empower organizations worldwide to build resilient, high-performance applications. Key Responsibilities … content, product demos, and sales enablement materials that clearly articulate our value proposition. Community & Ecosystem Collaboration: Serve as a technical product expert. Collaborate with developer relations to support our open-source community, gathering feedback and representing their needs to inform the product roadmap. Cross-Functional Alignment: Ensure alignment across engineering, marketing, sales, and support, communicating progress and dependencies More ❯

s your chance to take full ownership of frontend projects from design to delivery with minimal supervision! About Ballerine Ballerine is a high-growth, early-stage startup building an open-source platform for identity verification and risk management in the financial sector. It’s a fast-paced team preparing for Series A funding — and looking for a Senior … in React, TypeScript, modern frontend frameworks and architectures • Strong understanding of state management, performance optimization, and scalable component-driven design • Experience with testing frameworks (Jest, Cypress, Playwright) • Comfort with open-source principles and contributions • Clear, confident communication in English (minimum C1, no heavy accents) • Ability to onboard quickly and deliver at startup pace • Proactive, independent, and ownership-driven … Chance to join a core team pre-Series A, shaping the product and the company’s direction • Work on complex, high-scale challenges with cutting-edge tools (LLMs, AI, open-source) • A culture where your voice matters — small team, high impact, no bureaucracy • Opportunities for technical leadership and direct influence on strategy • Fully remote role Responsibilities • Architect, develop More ❯

responsibilities Define and champion the technical strategy for services, ensuring alignment with user needs and business goals Lead technical specialists across multiple projects, solving architectural challenges. Design and assure open-source, user-centred systems in agile environments. Own the technical design and evolution of services, including integration and interoperability. Provide technical governance and present designs to boards such … governance boards and ensuring alignment with standards. Previous or current experience developing web services using Python/Django and/or NodeJS/React with knowledge of cloud technologies, open-source technologies and secure system design. Proven leadership in guiding technical teams, delivering user-focused services in agile environments and communicating complex concepts to varied stakeholders. Desirable skills More ❯

experience for both small projects and large monorepos. Stay abreast of industry trends and advancements in CI/CD technologies, bringing innovative ideas to the team. Engage with the open-source community, participate in discussions, and contribute to related projects, aligning with Vercel's commitment to giving back to the developer community. Write clean, efficient, tested, and well … If You: Are a React or Next.js expert. Have worked to develop a CI/CD platform for other developers to use. Have experience contributing to, or participating in open source projects. Benefits: Competitive compensation package, including equity. Inclusive Healthcare Package. Learn and Grow - we provide mentorship and send you to events that help you build your network More ❯

the reliability and stability of the SDK. Collaborate with cross-functional teams, including product managers, designers, and infrastructure experts, to address challenges and deliver exceptional results. Engage with the open-source community, participate in discussions, and contribute to related projects, aligning with Vercel's commitment to giving back to the developer community. Actively gather feedback from developers and … use it to drive continuous improvement and innovation in the AI SDK. About You: You have at least 5+ years of relevant experience Experience contributing to or participating in open source projects Excellent communication skills and the ability to work effectively in a collaborative team environment Competitive compensation package, including equity. Learn and Grow - we provide mentorship and More ❯

design and architecture of core systems. Collaborate with cross-functional teams including product, research, and security Write clean, testable, and maintainable code, ensuring scalability and reliability Engage with the open-source and blockchain developer community Key Requirements Strong commercial experience with Rust (production-level) Deep understanding of systems programming, memory management, and concurrency Experience with distributed systems Enthusiasm … for crypto, Web3, and open-source development Excellent communication skills and ability to work in a collaborative hybrid team More ❯

hiring managers to deeply understand team needs, technical requirements, and ideal candidate profiles. Proactively identify and engage passive candidates through innovative sourcing methods-including GitHub, GoogleScholar, Stack Overflow, arXiv, open-source communities, tech events, and bespoke search strategies. Experiment with and implement new sourcing tools, outreach methods, and engagement tactics to increase pipeline quality and diversity. Act as … talent globally. A strategic mindset with a proactive approach to talent discovery-you don't wait for reqs to get started. Expertise in sourcing beyond LinkedIn (e.g. GitHub, Kaggle, open-source projects, technical blogs, conferences, custom Boolean strings). Strong communication and storytelling skills-you know how to craft compelling outreach messages that resonate with technical candidates. Ability … a great culture while still providing flexibility to work from home. We expect employees to be in the office at least three days per week. We have a radically open and accepting culture at Intercom. We avoid spending time on divisive subjects to foster a safe and cohesive work environment for everyone. As an organization, our policy is to More ❯

Bitcoin, and Zcash and has pioneered a completely new, next-generation blockchain protocol with Polkadot and the framework it's built with, Substrate. Parity is passionate about building the open-source technologies needed to power an unstoppable, decentralised web -known as Web3- and helps developers and organisations implement and build upon the Web3 tech stack. People in our … in a relatively new industry and an uncertain regulatory environment Prior knowledge of blockchain would be an advantage, however an interest in and a desire to learn about blockchain, open source and decentralised systems will be the key to success in this role About working for us Competitive remuneration packages based on iterative market research, including tokens (where … everyone in our collective feeling included and welcome. View our Applicant Notice to see how we use your data. Is this position not quite your match? Browse our other open roles. More ❯

discoveries about human health and diseases. So future generations can live in good health for longer. Requirements Technical skills Knowledge and experience of building cloud-hosted backend services using open source technologies in a start-up or scale-up environment, ideally using Python, though equivalent experience is welcome. Knowledge and experience of building backend systems for data movement More ❯

infrastructure architecture is a plus. Understanding of modern authentication protocols such as OAuth2 and OIDC. Consideration of cross-cutting concerns like observability and security in infrastructure design. Contributions to Open Source projects are a plus. As an equal opportunity employer we welcome applications that reflect the diversity of our wider community. Please let us know at any time … being a nice person Truly flexible working hours - school pick up, volunteering, gym - no problem Generous leave - 27 days’ holiday plus bank holidays and enhanced family leave Transparent and open culture - you will be listened to and heard More ❯

security in line with ISO27001 and Cyber Essentials Plus Development and maintenance of AI system focused on intelligence analysis and processing Development and maintenance of the data repositories, including source, geospatial and open-source intelligence Liaise with client stakeholders within various defence organisations Requirements: understand how to apply it to improve client operations, specifically situational awareness and More ❯

security in line with ISO27001 and Cyber Essentials Plus Development and maintenance of AI system focused on intelligence analysis and processing Development and maintenance of the data repositories, including source, geospatial and open-source intelligence Liaise with client stakeholders within various defence organisations Requirements: understand how to apply it to improve client operations, specifically situational awareness and More ❯

Office/Remote Reporting to: Engineering Manager Job Purpose: We are seeking innovative Linux Systems Engineer to help shape the next generation of secure endpoint solutions. This role is open to both experienced engineers ready to tackle complex challenges and mid-level engineers eager to learn, grow, and innovate. You will work at the intersection of Linux internals, networking … C programming skills for low-level or performance-critical development. Experience with containerisation (Docker, Kubernetes). Familiarity with endpoint security, intrusion detection, or system hardening. Contributions to Linux or open-source projects. Experience with debugging, profiling, or performance optimisation tools. Why Join Us Shape the future of secure endpoint technology. Work on high-impact projects for global, high More ❯

Office/Remote Reporting to: Engineering Manager Job Purpose: We are seeking innovative Linux Systems Engineer to help shape the next generation of secure endpoint solutions. This role is open to both experienced engineers ready to tackle complex challenges and mid-level engineers eager to learn, grow, and innovate. You will work at the intersection of Linux internals, networking … C programming skills for low-level or performance-critical development. Experience with containerisation (Docker, Kubernetes). Familiarity with endpoint security, intrusion detection, or system hardening. Contributions to Linux or open-source projects. Experience with debugging, profiling, or performance optimisation tools. Why Join Us Shape the future of secure endpoint technology. Work on high-impact projects for global, high 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 ❯

1K per year for courses, books, events, or coaching. Remote first - Remote across Europe with occasional off sites; some roles are hybrid. Giving back - $100 per month to support open source projects. Transparency - Open view of what everyone is working on and company health. An ambitious but kind culture - eNPS 94 in 2024. Country specific details are More ❯

mindset: you thrive in startup environments and like solving real problems and learning fast. Proven impact: youve built and scaled products, led projects that made a difference, contributed to open-source, or delivered results that truly moved the needle. Why youll love it here Impact from day one: your work goes live quickly and matters immediately. Big challenges More ❯

security processes. Infrastructure & Compliance as Code: Knowledge of IaC and Policy as Code to enhance security maturity. Stakeholder Management & Leadership: Ability to manage stakeholders, guide engineers, and interest in open-source technologies. Benefits include 25 days of holiday, bonus, pension contributions, private medical/dental/vision coverage, life assurance, critical illness cover, and wellness programs with access More ❯

Prometheus, Grafana, or similar observability tooling. Exposure to hybrid-cloud or cloud migration strategies. Familiarity with performance optimisation in low-latency data pipelines. Contributions to DevOps-related communities, blogs, open source, or talks. What You'll Get The opportunity to shape the future of DevOps and Developer Experience within an innovative, high volume-growth, data-centric company. Freedom More ❯

of-the-art techniques What You'll Need to Succeed Proficiency in programming languages such as Python, JavaScript, or TypeScript Experience working with foundational model APIs and pre-trained open source models Strong understanding of machine learning workflows, including model evaluations and LLM fine-tuning Familiarity with AI orchestration and agent-based systems and best practices (LangChain, AutoGen … customers, Doing rather than observing, Improving ourselves and our business, Owning and holding ourselves accountable for success, and Leading by showing up with a point of view, engaging in open discussion, listening respectfully to others opinions and committing to decisions. You will have a fast start if you have experience Experience with cloud platforms such as AWS, Google Cloud More ❯

a fully remote environment Security-first software development mindset Comfort with AI technologies and automation Bonus Skills Experience with Cloud products, Kubernetes or other orchestration tools API management experience Open source contributions Experience with React performance tooling Knowledge of authentication/authorization flows (OAuth/OIDC) Here's why you should join us: Everyone has unlimited paid holiday. More ❯

AI architectures, platforms, or internal developer tools. Familiarity with AI orchestration frameworks (LlamaIndex, LangChain, Crew AI, AutoGen, etc.) and best practices for agentic systems. Track record of contributions to open-source AI/ML communities or internal platform accelerators. Background working in environments requiring compliance, security, and governance for AI applications. Exposure to both traditional ML and modern … GenAI systems, with ability to evaluate trade-offs and guide adoption. Why join us? At bp, we provide an excellent working environment and employee benefits! We offer an open and inclusive culture and a great work-life balance. Tremendous learning and development opportunities are available to craft a career path, life and health insurance, medical care package and many More ❯

the future of public sector tech. What You'll Be Leading Build and evolve automated test frameworks across UI & API layers Integrate testing into CI/CD pipelines using open-source tools like Selenium & Java Champion agile testing practices : TDD, BDD, ATDD Lead exploratory and non-functional testing : performance, security, accessibility Collaborate with cross-functional teams to refine More ❯

systems. Duties of the Transaction Monitoring Analyst to include: Complex Case Investigation: Conduct in-depth investigations into high-risk fraud and money laundering alerts, using advanced analytical techniques and open-source intelligence to build comprehensive case narratives. SAR Preparation: Draft and finalize thorough Suspicious Activity Reports (SARs) for regulatory reporting, collaborating with the MLRO to ensure all filings More ❯