1 to 25 of 98 Open Source Jobs in London

leading database for modern application development. The Opportunity The Director, Sales - Europe will lead and scale revenue growth across Europe for a database and open-source technology company. This executive will be responsible for building a high-performing regional sales organization, expanding enterprise adoption, and monetizing open-source and cloud offerings through subscriptions, support, and services. The ideal candidate brings deep experience selling complex infrastructure or data platforms, understands open-source business models, cloud and SaaS, and can balance community-driven adoption with enterprise sales execution. What You’ll Do Revenue & Growth Strategy ...

real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We began as widely adopted open-source tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale. With $125M raised at Series … contributions can shape how this technology shows up in the real world. Today, our platform includes LangSmith (Observability, Evaluation, Deployment, Fleet, and Sandboxes), our open source frameworks (LangChain, LangGraph, and Deep Agents), and the newly launched LangSmith Engine for autonomous agent improvement. We have 100M+ monthly open ...

London, you'll be the founding leader of a team working on two products: Hegel , our property-based testing library family, and Bombadil , our open-source browser testing product. This isn't a "manage the roadmap and attend standups" kind of role — you'll be in the code … London team — hire exceptional engineers, onboard them well, and create the kind of environment where they do the best work of their careers. Foster Open Source Communities – Further our OSS testing frameworks by interacting with the community to build sustainable and rich relationships between Antithesis, our users ...

High Daily Rate We are seeking an experienced Linux Kernel Engineer with a proven track record of contributing to the Linux mainline through upstream open-source development. This is a unique opportunity to join one of the world's leading semiconductor organisations, working at the forefront of embedded … Doing Developing and enhancing Linux kernel functionality for cutting-edge semiconductor technologies. Contributing code directly to the Linux mainline and engaging with the upstream open-source community. Working closely with platform, firmware, and hardware engineering teams to deliver high-performance solutions. Driving kernel optimisation, debugging, and feature development ...

curious and open-minded individual with an interest in conducting state-of-the-art foundational machine learning research? Thomson Reuters Labs is seeking Research Scientists with a passion for building complex agent-based AI systems in a data-rich, complex academic environment driven by real-world problems. Foundational Research … model training. Extensive experience working on agent-based systems, tool-using AI, or multi-agent coordination in LLM contexts (e.g. startup, industry, or extensive open-source experience). Strong software and/or infrastructure engineering skills and ensuring well-managed software delivery, as evidenced by code contributions ...

candidate will have come from a strong technical background, and have an understanding of attack vectors for high threat environments, across both proprietary and open-source technology stacks. You will advise and enable technical teams to make security decisions and provide advice and guidance, ensuring the effective … programmes, projects or a product-centric organisation. You will have a good understanding of a broad range of industry-standard technologies, both proprietary and open source, across a diverse range of Microsoft and Linux-based deployments, across physical, virtual and containerised compute. You will have experience in securing ...

make and document key technical decisions Promote secure-by-design principles across all aspects of platform development Establish and maintain core engineering tooling, including source control, CI/CD pipelines, infrastructure-as-code, and automated testing frameworks Platform Engineering Design and implement identity and access management solutions with robust … workflow, and operational capabilities to support governance and compliance requirements Implement networking, monitoring, and security controls for highly secure environments Evaluate and integrate appropriate open-source technologies and third-party components Contribute to the design and delivery of scalable, resilient, and maintainable distributed systems Collaboration & Team Development ...

monitors, including chain-of-thought reasoning, structured outputs, and multi-step verification Future projects (likely not in the first 6 months) Fine-tune smaller open-source models to create efficient, specialized monitors for high-volume production environments Design and build agentic monitoring systems that autonomously investigate logs … based on empirical findings (e.g., prompting, scaffolding, agent design, fine-tuning, or RL). Strong Python programming skills Demonstrated ability to work independently on open-ended research problems Bonus: Experience with AI evaluation frameworks, in particular Inspect (though other frameworks are relevant as well) Familiarity with AI safety concepts ...

Machine Learning team in Corporate and Investment Banking is transforming the operations of the world’s largest bank by leveraging the latest advancements in open source artificial intelligence and proprietary frontier models. To facilitate rapid growth, the team is focusing expertise in key "Domains" that are crucial … Domains. We seek an team member with a strong foundation in artificial intelligence and software engineering, who has made significant contributions to open source projects and/or led the development and maintenance of AI systems vital to business operations. As an Applied AI ML Director within ...

time, and enhance learning and creativity. Our technology is designed to integrate seamlessly into daily working life. We democratize AI through high-performance, optimized, open-source and cutting-edge models, products and solutions. Our comprehensive AI platform is designed to meet enterprise needs, whether on-premises … Have applied ML methods to simulation or surrogate modelling Have experience automating large-scale simulation campaigns on HPC clusters Have contributed to a large open-source or industry codebase Have publications in engineering or ML venues (NeurIPS, ICLR, etc.) Love improving existing code by fixing typing issues, adding ...

seeking a Director, Sales - Europe to spearhead revenue growth across the continent. This role demands a seasoned sales leader who understands the complexities of open-source technology, cloud, and enterprise environments. The successful candidate will lead a regional sales organization while defining sales strategies and driving growth ...

Contribute to the practice development through thought leadership and development of innovative services and offerings. We expect you to have: Strong working knowledge of open source, open standards and cloud technologies. Good understanding of architectural concepts, methodologies and approaches. Excellent working knowledge of design patterns and modelling ...

HTML5, CSS3, CSS Grid, and Flexbox. Work with AstroUXDS and UX designs to deliver high-quality user interfaces. Integrate and maintain third-party and open-source npm packages within Angular applications (for example data-visualisation or mapping libraries). Contribute to automated testing using Playwright and Cucumber. Collaborate … CSS3, CSS Grid, and Flexbox for responsive UI development. Experience using Node.js and npm for build processes and dependency management. Experience integrating and maintaining open-source npm libraries within web applications (for example charting, mapping, or visualisation libraries). Familiarity with automated testing tools such as Playwright ...

capabilities needed to welcome a billion customers. About the Team Backstage was created at Spotify and has grown into a leading SaaS and open source platform for developer portals. Thousands of companies use Backstage to bring structure to complex microservices environments, improve developer experience, and ship high-quality … software faster – including in the age of AI – without losing autonomy or control. Backstage powers centralized software catalogs, standards, and AI enablement capabilities across open source, plugins, and SaaS offerings. Our customers include global enterprises and Fortune 100 companies transforming their engineering culture. This role leads marketing ...

capabilities needed to welcome a billion customers. About the Team Backstage was created at Spotify and has grown into a leading SaaS and open source platform for developer portals. Thousands of companies use Backstage to bring structure to complex microservices environments, improve developer experience, and ship high-quality … software faster — including in the age of AI — without losing autonomy or control. Backstage powers centralized software catalogs, standards, and AI enablement capabilities across open source, plugins, and SaaS offerings. Our customers include global enterprises and Fortune 100 companies transforming their engineering culture. This role leads marketing ...

strategic partnerships with customers, vendors, and partners. Developing IP Strategies: Taking ownership of the company's IP strategy, including trademarks, patents, licensing, and open-source compliance. Data Privacy Compliance: Advising on data privacy and data protection regulations across multiple jurisdictions, including the US (CCPA, CPRA, HIPAA), EU (GDPR … CCPA, CPRA, HIPAA, GDPR, and other international regulations. Expertise in managing commercial tech transactions, including B2B licensing, SaaS agreements, and strategic partnerships. Familiarity with open-source licensing models and compliance. A proven ability to advise on product development while ensuring data protection compliance. Exceptional drafting, communication, and collaboration ...

platforms.* Familiarity with event-driven architectures, message queues (Kafka, SQS, RabbitMQ), and microservices patterns.* Experience with advanced AI/ML engineering, including fine-tuning open-source models, building evaluation frameworks for LLM outputs, or designing guardrails for enterprise AI deployments.* Experience with Citi Velocity, Citi Direct, or similar ...

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) Other Stuff NB: Please only apply if you have resided ...

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) Other Stuff NB: Please only apply if you have resided ...

passion for mentoring and enabling others. Proven ability to lead or significantly contribute to cross‐functional projects. Productionize LLMs: Build evaluation framework for open‐source and foundational LLMs; implement retrieval pipelines, prompt synthesis, response validation, and self‐correction loops tailored to production operations. Integrate with runtime ecosystems: Connect ...

cost optimization experience, including rightsizing, reserved capacity, and FinOps practices Experience with Tailscale or similar overlay networking tools Kubernetes certification (CKA, CKAD, or CKS) Open‐source contributions Experience with Backstage.io or similar internal developer portals and platform tooling Prior work on or alongside a developer platform or platform ...

skills in web front end technologies such as HTML, CSS, Bootstrap Golang Spring Boot Docker Kubernetes Atlassian Build tools: Maven, Gradle, Ant Familiar with source control systems, such as GIT, including branching, merging, etc. Testing: TDD, unit testing, JUnit, Mockito, Cypress Good knowledge of relational databases such as MySQL … scripts, store procedures Shift to the left: Functional test automation (API testing, UI testing [cucumber, nightwatch]) Nice to have skills: AWS Knowledge of Open Source BPMN workflow engines (Camunda, Activiti or Flowable) Experience on a front-end javascript framework such as react, angular or vue.js RedHat OpenShift ...

specialists. The successful candidate will meet all of the following essential criteria: Demonstrable experience in designing large scale cloud migration projects/programmes with open source and commercial software within AWS, Azure, GCP or hybrid Experience in operating within a multi-disciplined team and clearly communicating complex technology … Understanding of NCSC Cloud Security Principles and its practical implementations Aker Systems Attributes At Aker we work as a team, we are collaborative, hardworking, open, and delivery obsessed. There is no blame culture here: try things, and take responsibility for the outcomes. You are always part of the wider ...

high‐performance networking (EFA, RDMA, InfiniBand) for distributed ML workloads Demonstrated ownership of production reliability for high‐throughput, latency‐sensitive systems Contributions to relevant open‐source projects (Kubernetes, Linux kernel, container runtimes, etc.) Skill in quickly understanding systems design tradeoffs and keeping track of rapidly evolving software systems ...

distributed systems, transaction management and telemetry pipelines - Understands how state is managed across multiple systems, how rollbacks occur, compensation patterns, fallback handling TMF Open API - Customisation and extension of schemas (extension knowledge is critical) - Understands their role in inter-component integration, how to change schemas, sync and async patterns … Deep understanding of TMF SID (Product/Service domains) and TMF Open APIs used across BSS/OSS HIGHLY DESIRABLE Cloud Services & Observability - Experience designing for multi-cloud, hybrid and on-prem environments - Skilled in cloud-native patterns (PaaS, SaaS, serverless, containers, orchestration) - Cloud platforms (AWS or GCP): commonly ...