101 to 125 of 1,067 Open Source Jobs in England

Machine Learning Senior Software Engineer

Location
Cambridge, England, United Kingdom
crafting the software that powers the next generation of mobile apps, portable devices, game development and much more. You will work on an open-source project that helps developers integrate and deploy machine learning workloads through Vulkan, enabling portable development across a wide range of platforms and devices. … able to collaborate with various teams Nice To Have Skills and Experience Experience in one or more of the following areas would be valuable: Open-source software development of large project with complex dependency, including public code reviews, documentation, release notes, issue tracking, and community engagement. Vulkan ...

Senior Java Software Engineer- Platform Engineering

Hiring Organisation
Wise
Location
London, United Kingdom
Salary
£ 80 K
decide where the team should invest.What you’ll work onDesign, build, and operate capabilities within Wise’s Continuous Delivery platform.Evolve our use of the Open Source CD tool Spinnaker and contribute improvements upstream where appropriate.Build reliable guardrails that help engineers deploy changes safely with minimal manual effort.Improve … will gainMeaningful influence over a platform used by engineers across Wise.The opportunity to solve engineering problems at company-wide scale.Scope to contribute to open source software.Support to develop your technical leadership and help other teams improve how they deliver software.A flexible working environment and regular team and company ...

Lead C++ / Java Developer

Hiring Organisation
London Stock Exchange Group
Location
London, United Kingdom
Salary
£ 80 K
ABOUT US:LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial … growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services – and our open-access model – we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.LSEG is headquartered ...

Senior Product Security Engineer

Hiring Organisation
Blockchain
Location
London, United Kingdom
Salary
£ 80 K
frameworks, authoring developer-facing security policies from scratch, and building automated policy-as-code gateway integrations.Public track record of CVEs, security research, or open-source contributions to security tooling.Advanced credentials such as OSCP, OSWE, CISSP or equivalent.Experience with on-chain/off-chain integration, payment reconciliation, or smart … contract security.Familiarity with vulnerability management platforms (DefectDojo, Dependabot orchestration) and GRC/Gateway integrations.Prior contributions to security automation and developer tooling (open source or internal).COMPENSATION & PERKSFull-time salary based on experience and meaningful equity in an industry-leading companyThis is a role based in our London office ...

Senior Product Security Engineer

Location
Greater London, England, United Kingdom
frameworks, authoring developer-facing security policies from scratch, and building automated policy-as-code gateway integrations. Public track record of CVEs, security research, or open-source contributions to security tooling. Advanced credentials such as OSCP, OSWE, CISSP or equivalent. Experience with on-chain/off-chain integration, payment … smart contract security. Familiarity with vulnerability management platforms (DefectDojo, Dependabot orchestration) and GRC/Gateway integrations. Prior contributions to security automation and developer tooling (open source or internal). COMPENSATION & PERKS Full-time salary based on experience and meaningful equity in an industry-leading company This ...

Data Scientist

Hiring Organisation
BAE SYSTEMS
Location
Camberley, Surrey, United Kingdom
Salary
£ 60 K
limited to (1) Elastic, Logstash, Kibana (ELK) and its equivalents (2) Ni-Fi (3) Python (4) Geospatial intelligence software (5) APIs from commercial/open-source providers.The data scientist will be expected to conduct exploratory analysis of datasets to address a range of client problem sets.Open-Source Intelligence and data exploitationThe data scientist is not expected to be trained/experienced in Open-Source Intelligence; however, their role will include working with a range of datasets in support of this objective. The data scientist should apply a range of techniques and exploitation to lead ...

AI Engineer - Systems Integrator

Location
Greater London, England, United Kingdom
using statistically robust methodologies Analysing failures and identifying opportunities for optimisation Experimenting with prompts, workflows and playbooks to improve outcomes Testing different models, including open-source and fine-tuned LLMs Evaluating and improving multi-agent workflows Researching defences against prompt injection and adversarial attacks Collaborating with security analysts … experience Experience evaluating AI systems or LLM performance Familiarity with cloud environments such as GCP Knowledge of modern software development practices Experience working with open-source AI models Interest in cyber security, threat detection or security operations Location & Working Pattern London Hybrid (fortnightly office travel plus occasional customer ...

Principal AI Data Scientist

Location
Greater London, England, United Kingdom
Timeseries Forecasting models to solve complex enterprise business and planning challenges. Generative AI Architecture: Architect GenAI solutions, focusing on fine‐tuning proprietary and opensource Large Language Models (LLMs) via Transformer architectures for specialised enterprise data tasks. Next‐Gen Interfaces: Design and integrate Conversational AI and autonomous Agentic … analytics applications. Familiarity with Anaplan or similar enterprise planning platforms. Experience with A/B testing and experimentation frameworks for AI features. Contributions to opensource ML projects or research publications. Our Commitment to Diversity, Equity, Inclusion, and Belonging (DEIB) We believe at Anaplan that diversity, equity, inclusion ...

Principal AI Data Scientist

Hiring Organisation
Anaplan
Location
London, United Kingdom
Salary
£ 80 K
Learning, and Timeseries Forecasting models to solve complex enterprise business and planning challenges.Generative AI Architecture: Architect GenAI solutions, focusing on fine-tuning proprietary and open-source Large Language Models (LLMs) via Transformer architectures for specialised enterprise data tasks.Next-Gen Interfaces: Design and integrate Conversational AI and autonomous Agentic … forecasting, planning, or analytics applicationsFamiliarity with Anaplan or similar enterprise planning platformsExperience with A/B testing and experimentation frameworks for AI featuresContributions to open-source ML projects or research publicationsOur Commitment to Diversity, Equity, Inclusion and Belonging (DEIB) We believe attracting and retaining the best talent ...

AI Engineer III - Agentic AI

Hiring Organisation
American Express
Location
Burgess Hill, West Sussex, United Kingdom
Salary
£ 80 K
TypeScriptCloud and infrastructure: AWS and/or GCP, KubernetesAPIs and services: REST, gRPCDistributed systems: event-driven architectures, including KafkaAgentic AI and MLCommercial and open-source LLMs integrated into agentic workflowsTooling for agent orchestration, retrieval-augmented generation, vector storage, and evaluationSchema validation and structured data handlingAI-assisted developmentUse … tooling, prompt engineering, RAG, or agent frameworks through work, coursework, or personal projects.Internship or early-career experience in fintech or other regulated environments.Contributions to open-source projects, hackathons, or side projects related to AI or developer tooling. Employment eligibility to work with American Express ...

AI Engineer III - Agentic AI

Hiring Organisation
American Express
Location
London, United Kingdom
Salary
£ 80 K
TypeScriptCloud and infrastructure: AWS and/or GCP, KubernetesAPIs and services: REST, gRPCDistributed systems: event-driven architectures, including KafkaAgentic AI and MLCommercial and open-source LLMs integrated into agentic workflowsTooling for agent orchestration, retrieval-augmented generation, vector storage, and evaluationSchema validation and structured data handlingAI-assisted developmentUse … tooling, prompt engineering, RAG, or agent frameworks through work, coursework, or personal projects.Internship or early-career experience in fintech or other regulated environments.Contributions to open-source projects, hackathons, or side projects related to AI or developer tooling. Employment eligibility to work with American Express ...

AI Engineer III - Agentic AI

Hiring Organisation
American Express
Location
Brighton, East Sussex, United Kingdom
Salary
£ 80 K
TypeScriptCloud and infrastructure: AWS and/or GCP, KubernetesAPIs and services: REST, gRPCDistributed systems: event-driven architectures, including KafkaAgentic AI and MLCommercial and open-source LLMs integrated into agentic workflowsTooling for agent orchestration, retrieval-augmented generation, vector storage, and evaluationSchema validation and structured data handlingAI-assisted developmentUse … tooling, prompt engineering, RAG, or agent frameworks through work, coursework, or personal projects.Internship or early-career experience in fintech or other regulated environments.Contributions to open-source projects, hackathons, or side projects related to AI or developer tooling. Employment eligibility to work with American Express ...

Senior AI Engineer II - Agentic AI

Hiring Organisation
American Express
Location
Burgess Hill, West Sussex, United Kingdom
Salary
£ 80 K
TypeScriptCloud and infrastructure: AWS and/or GCP, KubernetesAPIs and services: REST, gRPCDistributed systems: event-driven architectures, including KafkaAgentic AI and MLCommercial and open-source LLMs integrated into agentic workflowsTooling for agent orchestration, retrieval-augmented generation, vector storage, and evaluationStrong schema, validation, and state management practicesAI-assisted developmentFluency … founding engineer or early technical contributor in high-growth environments.Demonstrated ability to ship technically complex systems in regulated contexts that customers actively rely on.Meaningful open-source contributions, particularly in AI or developer tooling.Employment eligibility to work with American Express in the UK is required as the company will ...

Senior AI Engineer II - Agentic AI

Hiring Organisation
American Express
Location
London, United Kingdom
Salary
£ 80 K
TypeScriptCloud and infrastructure: AWS and/or GCP, KubernetesAPIs and services: REST, gRPCDistributed systems: event-driven architectures, including KafkaAgentic AI and MLCommercial and open-source LLMs integrated into agentic workflowsTooling for agent orchestration, retrieval-augmented generation, vector storage, and evaluationStrong schema, validation, and state management practicesAI-assisted developmentFluency … founding engineer or early technical contributor in high-growth environments.Demonstrated ability to ship technically complex systems in regulated contexts that customers actively rely on.Meaningful open-source contributions, particularly in AI or developer tooling.Employment eligibility to work with American Express in the UK is required as the company will ...

Senior AI Engineer II - Agentic AI

Hiring Organisation
American Express
Location
Brighton, East Sussex, United Kingdom
Salary
£ 80 K
TypeScriptCloud and infrastructure: AWS and/or GCP, KubernetesAPIs and services: REST, gRPCDistributed systems: event-driven architectures, including KafkaAgentic AI and MLCommercial and open-source LLMs integrated into agentic workflowsTooling for agent orchestration, retrieval-augmented generation, vector storage, and evaluationStrong schema, validation, and state management practicesAI-assisted developmentFluency … founding engineer or early technical contributor in high-growth environments.Demonstrated ability to ship technically complex systems in regulated contexts that customers actively rely on.Meaningful open-source contributions, particularly in AI or developer tooling.Employment eligibility to work with American Express in the UK is required as the company will ...

Cost Accounting Manager

Hiring Organisation
Canonical
Location
London, United Kingdom
Salary
£ 80 K
Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our customers include the world's leading … colleaguesPriority Pass and travel upgrades for long-haul company eventsAbout CanonicalCanonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open-source projects and the platform ...

Group Financial Controller

Hiring Organisation
Canonical
Location
London, United Kingdom
Salary
£ 80 K
Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our customers include the world's leading … colleaguesPriority Pass and travel upgrades for long-haul company eventsAbout CanonicalCanonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open-source projects and the platform ...

Group Financial Controller

Location
Greater London, England, United Kingdom
Home based - EMEA; Office Based - London, UK Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. … travel upgrades for long-haul company events About Canonical Canonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open-source projects and the platform ...

Senior Software Engineer, Distributed Databases (Vitess/MySQL/MyRocks) London, GBR Posted today

Location
Greater London, England, United Kingdom
boundary between distributed systems and database internals. You will build the software that operates and evolves this fleet, diagnose difficult production behaviour at source-code depth, and contribute fixes and features upstream to Vitess and the MySQL/MyRocks/RocksDB ecosystem. We solve recurring operational problems in software. … rotation and turn recurring incidents and operational work into durable platform improvements. Lead technical designs and incident investigations, mentor engineers, and contribute to the opensource projects on which the platform depends. You’ll need to have: Significant experience designing, building, or operating distributed databases or production infrastructure ...

Senior Software Engineer, Distributed Databases (Vitess/MySQL/MyRocks)

Hiring Organisation
Bloomberg
Location
London, United Kingdom
Salary
£ 70 K
boundary between distributed systems and database internals. You will build the software that operates and evolves this fleet, diagnose difficult production behavior at source-code depth, and contribute fixes and features upstream to Vitess and the MySQL/MyRocks/RocksDB ecosystem.We solve recurring operational problems in software. Where … rotation and turn recurring incidents and operational work into durable platform improvements.- Lead technical designs and incident investigations, mentor engineers, and contribute to the open-source projects on which the platform depends.You’ll need to have:- Significant experience designing, building, or operating distributed databases or production infrastructure ...

Principal Worldwide Specialist Solutions Architect, Amazon Bedrock, AgentCore, Data & AI GTM

Location
Greater London, England, United Kingdom
will work backwards from customer outcomes to define reference architectures that combine AWS AI services (Amazon Bedrock, AgentCore, Continuum, and others) with partner and opensource components in regulated industry deployments. This role requires someone who builds. You will write code, construct proof‐of‐concept implementations, contribute … opensource projects, and develop reusable blueprints that accelerate GenAI adoption across the energy vertical. You will influence AWS product roadmaps by translating customer requirements into feature requests and working directly with service teams. You will publish your work through whitepapers, blog posts, reference architectures, and conference presentations. ...

Principal Worldwide Specialist Solutions Architect, Amazon Bedrock, AgentCore, Data & AI GTM

Hiring Organisation
AmazonWebServices
Location
London, United Kingdom
Salary
£ 80 K
will work backwards from customer outcomes to define reference architectures that combine AWS AI services (Amazon Bedrock, AgentCore, Continuum, and others) with partner and open-source components in regulated industry deployments.This role requires someone who builds. You will write code, construct proof-of-concept implementations, contribute to open-source projects, and develop reusable blueprints that accelerate GenAI adoption across the energy vertical. You will influence AWS product roadmaps by translating customer requirements into feature requests and working directly with service teams. You will publish your work through whitepapers, blog posts, reference architectures, and conference presentations.The ideal ...

Senior Python Developer

Hiring Organisation
Lyst
Location
London, United Kingdom
Salary
£ 80 K
collaborative manner and that consistent improvement comes from sharing ideas.Tests things; whether it's your code or a new idea. Actively contributes to the open source and tech community. Things we usePython, JavaScript, Django, PostgreSQL, Redis, AWS, iOS, Elasticsearch, Docker, Ember.js, Microservices, TDD, buzzwordsYou will be working … features and ensuring they are scaleable and delivered to project deadlines. You can find out more about the team and see some of our open source projects here: http://developers.lyst.com/We believe that there is no silver bullet to fix the problems and challenges ...

Director, Data Science, Digital & Insights, Strategic Communications

Hiring Organisation
FTI Consulting
Location
London, United Kingdom
Salary
£ 80 K
integral part of a focused team where you can make a real impact. You’ll be surrounded by an open, collaborative culture that embraces diversity, recognition, professional development and, most importantly, you.Are you ready to make your impact About The RoleWe are looking for a talented, ambitious, and seasoned … requires a significant level of technical knowledge relating to, for example:AI platforms and solutions across algorithmic and agentic categories (e.g., AI vendor APIs, open-source tooling such as LlamaIndex, HuggingFace, Claude Code or similar)Manipulating datasets in Python, SQL and ExcelDeep familiarity with GitHub to collaborate with ...

Director, Data Science, Digital & Insights, Strategic Communications

Location
Greater London, England, United Kingdom
integral part of a focused team where you can make a real impact. You’ll be surrounded by an open, collaborative culture that embraces diversity, recognition, professional development and, most importantly, you.Are you ready to make your impact?**About The Role**We are looking for a talented, ambitious … requires a significant level of technical knowledge relating to, for example:* AI platforms and solutions across algorithmic and agentic categories (e.g., AI vendor APIs, open-source tooling such as LlamaIndex, HuggingFace, Claude Code or similar)* Manipulating datasets in Python, SQL and Excel* Deep familiarity with GitHub to collaborate ...