1 to 25 of 37 Open Source Jobs in London

Engineering: Java Open-Source Data Infrastructure Package: £175k - £217k base + 15% bonus + options Location: UK remote-first. My client, a profitable, Series-D software company (circa 110 people, $40-45M ARR) behind one of the most widely-used open-source real-time data … levels deep: distributed systems, low-latency engineering, JVM performance, stream processing, or storage and replication internals. You've probably written or contributed to Java open source, spoken at conferences, and within the last couple of years you've personally worked a hard technical problem, not just funded one. ...

experience — proven ability to evolve existing platforms while simultaneously designing and delivering new systems; comfort making bold architectural decisions in both constrained legacy and open greenfield environments People leadership and talent development — demonstrated ability to attract, grow, and retain exceptional engineers and engineering leaders; a builder of teams … services domain knowledge — familiarity with analytical workflows, credit ratings processes, or how technology creates leverage in financial decision-making Technical thought leadership — contributing to open source, speaking at industry events, publishing engineering content, or establishing technical direction that influences well beyond your immediate team What We Offer ...

intuitive trading technology solutions. We are looking for a Senior Software Development Engineer in Test to join our team and help develop our open-source and proprietary platform products. YOU ARE: Self-directed, with the ability to define and manage priorities independently. A great team player who loves ...

techniques. Experience with vector databases, semantic search, knowledge graphs or related technologies. Familiarity with AI governance frameworks, security standards or ISO 42001. Contributions to open-source projects, research or the wider AI engineering community. Experience supporting presales, shaping AI propositions or identifying opportunities to commercialise AI capabilities. ...

effectively with product squads and business partners, translate complex AI/ML concepts for non-technical stakeholders, and bring your whole self while remaining open to others' perspectives What Would Make You Stand Out: Cutting-edge AI research to production experience – Track record of taking breakthrough AI capabilities from … enterprise-grade ML systems with real users ML thought leadership and technical strategy – History of establishing technical direction for ML initiatives, contributing to open-source ML projects, speaking at AI/ML conferences, publishing research, or writing about practical applications of emerging AI technologies Multi-agent and agentic ...

/JavaScript, modern API frameworks, front-end frameworks, automated testing and software design patterns. Claude Code or comparable AI coding assistants integrated with enterprise source control and CI/CD workflows. MCP client/server development or comparable secure tool-integration patterns for agentic applications. Agent orchestration, tool calling … DevSecOps Set yourself apart: Production delivery of Claude-based applications, agents or Claude Code enablement. Published MCP servers, reusable agent components, evaluation harnesses or open-source contributions. Experience building developer platforms or AI-enabled SDLC accelerators. Experience delivering AI solutions in regulated environments. Relevant cloud, software engineering, machine ...

frameworks (MLflow, Kubeflow, Airflow). Familiarity with SQL, NoSQL, and distributed data technologies. Experience deploying AI models in production environments. Publications, patents, or open-source contributions in ML/AI. Benefits What We Offer: Competitive Salary Bonus Scheme Private Healthcare Insurance 25 Days Annual Leave + Bank Holidays ...

frameworks (MLflow, Kubeflow, Airflow). Familiarity with SQL, NoSQL, and distributed data technologies. Experience deploying AI models in production environments. Publications, patents, or open-source contributions in ML/AI. Benefits What We Offer: Competitive Salary Bonus Scheme Private Healthcare Insurance 25 Days Annual Leave + Bank Holidays ...

frameworks (MLflow, Kubeflow, Airflow). Familiarity with SQL, NoSQL, and distributed data technologies. Experience deploying AI models in production environments. Publications, patents, or open-source contributions in ML/AI. Benefits What We Offer: Competitive Salary Bonus Scheme Private Healthcare Insurance 25 Days Annual Leave + Bank Holidays ...

Google Cloud certifications , such as Developer, Solutions Architect or Security. Experience implementing cloud security practices including secure coding, threat modelling, compliance and incident response. Open-source contributions or a strong track record of technical knowledge sharing. Experience leading multi-team initiatives spanning infrastructure, application and platform engineering. Damia ...

data architect (only when needed) with programme languages like Java, Scala, Python, or architecture-as-code such as linkml, turtle, owl Experience with both open source and vendor data platforms Experience with data architecture, architectural concepts, methodologies and approaches Experience with microservices architecture Experience of designing for both ...

data architect (only when needed) with programme languages like Java, Scala, Python, or architecture-as-code such as linkml, turtle, owl Experience with both open source and vendor data platforms Experience with data architecture, architectural concepts, methodologies and approaches Experience with microservices architecture Experience of designing for both ...

hands-on data architect (only when needed)with programme languageslikeJava, Scala,Python, or architecture-as-code such aslinkml, turtle, owl Experience with both open source and vendor data platforms Experience with data architecture, architectural concepts,methodologiesand approaches Experience with microservices architecture Experience of designing for both structured ...

infrastructure. Strong understanding of Network Functions Virtualisation (NFV) and cloud-native telecoms architectures. Hands-on experience with network orchestration platforms, including ETSI MANO/Open Source MANO (OSM). Experience managing Virtual Network Functions (VNFs) and Cloud Native Network Functions (CNFs). Strong experience with Kubernetes and containerised … networking concepts, IP networking and virtualised infrastructure. Experience troubleshooting complex carrier-grade network environments. Desirable Skills Experience within Mobile Core, RAN, Private 5G or Open RAN environments. Knowledge of ETSI NFV and SDN architectures. Experience creating or maintaining YANG-based descriptors. Experience integrating orchestration platforms with multiple cloud environments. ...

sufficient to support confident release decisions.? Tech stack Expertise in test automation using JavaScript based test frameworks such as WebdriverIO, Playwright or Cypress Open-source JS based libraries or frameworks for API testing, or Postman. Jmeter or K6 for load and performance testing Continuous integration pipelines using Jenkins ...

focussed team, gaining exposure to: Implementing software solutions including design, development and testing Using a wide range of technologies, specialising in the use of open-source libraries and components Utilising tools such as GitLab to build continuous integration pipelines, which help monitor and ensure software quality and security ...

London - Hybrid (4 Days on-site, 1 day WFH each week) Inside IR35 Contract Are you a build and deployment engineer who can open up the C# code behind a pipeline and fix it yourself? That combination is exactly what's needed here. You'll join the Platform Engineering … function of one of the world's largest financial groups, owning the on-premises toolchain that takes software from source code to production. GitHub Enterprise, TeamCity, JFrog Artifactory and Xray, and Octopus Deploy, all integrated with ServiceNow change and vulnerability management. In a regulated banking environment, every build ...

Istio, Linkerd) and workload identity. Experience in detection engineering, logging pipeline development, or SIEM tuning in containerised environments. Experience in contributing to security-focused open-source projects or internal security platform tooling. Responsibilities: Deploy, configure, and manage cloud security platform tools and technologies, including Security Information and Event ...

Istio, Linkerd) and workload identity. Experience in detection engineering, logging pipeline development, or SIEM tuning in containerised environments. Experience in contributing to security-focused open-source projects or internal security platform tooling. Responsibilities: Deploy, configure, and manage cloud security platform tools and technologies, including Security Information and Event ...

Istio, Linkerd) and workload identity. Experience in detection engineering, logging pipeline development, or SIEM tuning in containerised environments. Experience in contributing to security-focused open-source projects or internal security platform tooling. Responsibilities: Deploy, configure, and manage cloud security platform tools and technologies, including Security Information and Event ...

Aeron - our flagship high-performance messaging infrastructure. Hydra - our developer framework for accelerating the development and delivery of trading systems. Artio - our market-leading open-source FIX engine. Aeron Sequencer - replicated state machines at scale. YOU ARE: A great team player who loves sharing knowledge and learning from ...

only when needed with programme languages Java, Scala and Python) Experience with Big Data technologies Experience with Microsoft Azure and services Experience with both open source and vendor data platforms. Experience with data architecture, architectural concepts, methodologies and approaches. Experience with microservices architecture Experience of designing for both ...

experience operating multi-tenant analytical systems at significant scale. Strong understanding of database internals, query optimisation, distributed architectures, sharding and replication. Experience contributing to open-source database projects or working at source-code level would be highly advantageous. A proven track record building scalable, observable and resilient ...

data integration approach Experience being a hands-on data architect Experience with Big Data technologies Experience with Microsoft Azure and services Experience with both open source and vendor data platforms. Experience with data architecture, architectural concepts, methodologies and approaches. Experience with microservices architecture Experience of designing for both ...

Some consultancy or client-facing experience, or a strong interest in moving into it Desirable: Vector databases, embeddings, fine-tuning Cloud experience (AWS preferred) Open-source contributions or visible AI side projects Experience shipping AI-powered features to production This is not a research role. We're looking ...