1 to 25 of 133 Open Source Jobs in London

Junior Systems Administrator

Hiring Organisation
Quant Capital
Location
London, UK
main development team. Our client is one of the most famous global quantitative hedge funds. The environment is that of Facebook or Google, relaxed open with time to think and make the right decisions. The atmosphere is calm and relaxed with an open dress code. This … petabyte storage storage solutions utilising ZFS, Ceph, NVMe and other cutting edge technologies Work on a diverse range of projects – recent examples include utilising Open Source technologies to build our own High Availability Virtual Machine cluster and a bespoke Container creation tool Contribute to the development of configuration ...

Fullstack Engineer (Backend)

Hiring Organisation
Randstad Technologies Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £550/day
Opportunity You will join a high-impact development squad building commercial offerings on top of the thriving open-source Backstage framework. You will design and build backend systems, APIs, and developer portals that elevate the developer experience across external commercial clients and internal engineering teams alike. Your Impact … streamline engineering workflows. Engineering Excellence: Elevate code quality through technical RFCs, code reviews, architectural feedback, unit testing, and full operational ownership of your services. Open Source Collaboration: Partner with product managers, designers, and the open-source community to shape the evolution of internal developer platforms. Your ...

Senior Software Engineer

Hiring Organisation
Oscar Technology
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £90,000 per annum
Already live with banks and financial institutions, and hiring to build the product further. You'll work across our data integration platform and our open-source schema language and ecosystem. What You'll Work On Mostly Kotlin backend, but everyone touches the full stack: the integration platform (streaming … pipelines, query execution, API composition, schema resolution, running in production at real financial institutions); our open-source schema language (compiler, type system, query engine, no prior compiler experience needed); our AI agent built on Spring AI (greenfield work orchestrating integrations autonomously); and the frontend (mainly Angular, some React ...

Design Verification (DV) Engineer

Hiring Organisation
Appcast
Location
London, UK
team actively working to rethink, redesign, and surpass the status quo. For example, members of our team are active maintainers of popular open source projects such as Slang, Verilator, and Cocotb.FPGA and ASIC verification is part of an innovative, growing team at HRT which is integral … hardware in an extremely fast-paced, real-time environment. No financial experience is necessary.ResponsibilitiesCreating testbenches and tests for our hardware platform, leveraging a hybrid open-source/proprietary, highly flexible environmentWriting detailed verification plansQuickly root-cause RTL bugsCollaborating directly with designers for rapid bringup of new projects ...

Quality Management Lead

Hiring Organisation
King's College London
Location
London, UK
transform healthcare research and clinical practice.The successful candidate will join the RADAR-base team, a multidisciplinary group developing one of the world's leading open-source platforms for remote patient monitoring using smartphones, wearable devices, and connected technologies. RADAR-base supports large-scale clinical studies and digital health … organisation's culture and development practices.The role offers a unique opportunity to shape quality and regulatory processes from the ground up within an open-source digital health platform that supports research across mental health, neurological disorders, cardiovascular disease, and other mental and physical conditions.This position would suit ...

Senior Cloud Architect

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Permanent
Salary
£100000 - £130000/annum
frameworks, including Scrum. Data Science Knowledge: Basic understanding of topics like machine learning, data mining, statistics, and data visualisation, with some practical experience preferred. Open-Source Contributions: History of contributions to open-source projects, showcasing collaboration and innovation. What's in It for You? We believe ...

Research Scientist, LLM Agents (Foundational Research)

Hiring Organisation
Thomson Reuters
Location
London, UK
curious and open-minded individual with an interest in conducting state-of-theart 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 … scale 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 to popular ...

Security Architect

Hiring Organisation
TXP
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650 per day
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 ...

Senior ML Platform Engineer - Artificial Intelligence

Hiring Organisation
Appcast
Location
London, UK
cohesive, integrated, and managed AI development life cycle to enable the building and maintenance of our AI systems. Our teams make extensive use of open source technologies such as, Kubernetes, Kubeflow, KServe, Argo, Buildpacks, and other cloud-native MLOps technologies. From technical governance to upstream collaboration … committed to enhancing the impact and sustainability of open source. Join the AI Group as a Senior ML Platform Engineer and you will have the opportunity to: * Architect, build, and diagnose multi-tenant AI platform systems * Work closely with AI application teams to design seamless workflows for continuous model ...

Test Lead

Hiring Organisation
Appcast
Location
London, UK
acumen to drive quality across our engineering processes. You will be responsible for designing, building, and maintaining robust automation and performance testing frameworks using open-source tools, while also mentoring and guiding other engineers.Key Responsibilities: Strategic Leadership: Plan and lead large-scale, complex testing activities, managing risks … identifying opportunities to improve quality and efficiency. Technical Ownership: Build, maintain, and evolve automation frameworks using open-source technologies. Process Improvement: Lead investigative work into existing processes to identify gaps and implement improvements. Test Design & Execution: Design and execute a wide range of testing techniques including functional, performance ...

Senior Java Software Engineer- Platform Engineering

Hiring Organisation
Appcast
Location
London, UK
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 ...

Research Applications Team Leader

Hiring Organisation
Queen Mary University of London
Location
London, UK
these servers run Rocky Linux. The post holder is required to possess substantial knowledge and experience of supporting large installations of Linux servers and open-source software in an academic or enterprise environment according to best practice.About YouThe Research Applications Team Leader will primarily be utilising advanced technical … ClusterExperience of devops methodologies, including automation, configuration management using Puppet and Git, and continuous integration solutionsAbility to provision and test a wide change of Open Source applications, using a variety of methods (source code, scripts, containers, packages).This an exciting role for a skilled Linux ...

Senior Java Software Engineer- Platform Engineering

Hiring Organisation
Wise
Location
Greater London, United Kingdom
Employment Type
Full Time
Salary
87500 to 111000 GBP Annually
team should invest. What you’ll work on Design, 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. … Meaningful 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 ...

Cost Accounting Manager

Hiring Organisation
Appcast
Location
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. 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 ...

Core AI Engineer

Hiring Organisation
Appcast
Location
London, UK
team within the AI Engineering department. We build, operate and scale the foundational platform that powers AI innovation across G‐Research, including on-prem open model inference, model serving, AI developer experience tooling, centralised MCP servers and secure agent sandboxing.We provide the foundations that enable teams across the firm … teams to provision and consume AI infrastructure independentlyIntegrating platform services with existing technology stacks, ensuring clear interfaces, monitoring and CI/CDEvaluating and adopting open-source technologies and applying emerging best practices to improve the platformWho are we looking for We value pragmatic engineers who combine deep infrastructure ...

Junior Linux Systems Engineer- Hedge Fund

Hiring Organisation
Quant Capital
Location
London, UK
develop the monitoring platform·Automation·Implement and adhere to system and network security·Identify and drive best practice standards, with a focus on Open Source offerings where feasibleAs requirements evolve you will leverage the best of the open source community, sometimes substituting your own solutions where ...

Senior Security Architect - SecOps and Vulnerability Management

Hiring Organisation
Appcast
Location
London, UK
detection logic to significantly minimize alert fatigue for the SOC team.Architect the end-to-end SBOM lifecycle to continuously track, analyze, and mitigate open-source and third-party software supply chain risks.Design a risk-based vulnerability management platform that automatically prioritizes infrastructure and application flaws utilizing real-world … analyzing Software Bills of Materials (SBOMs using frameworks like CycloneDX or SPDX) and integrating them with tools like Dependency-Track or Snyk to track open-source vulnerabilities.Advanced threat modeling experience (e.g., STRIDE-LM) for SIEM data flows, log ingestion pipelines, and vulnerability management platformsExperience architecting vulnerability programs using ...

Applied AI ML Director

Hiring Organisation
Appcast
Location
London, UK
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 the Corporate ...

Andriod Software Engineer

Hiring Organisation
fortice
Location
London, UK
Dagger or equivalent• Experience with Gradle build systems, continuous integration and testing (instrumentation, automation, unit testing)• Avid follower of Android development trends• Contributor to Open Source projects• Experience with test-driven development and behavioural driven development• Mastery in software engineering tools• Ability to document requirements and designs• Familiarity … Keen on diversity (international company)• Pro-active, look for pragmatic solutions, not winning arguments• Passionately curious about new trends and approaches• Keen contributor on open source projects Permanent ...

Solution Architect

Hiring Organisation
Accenture
Location
London Area, United Kingdom
development of innovative offerings Participate in thought leadership about Architecture and Digital Transformation. Experience Required: The successful candidate will 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 ...

Product Lawyer

Hiring Organisation
Lawyers On Demand
Location
City of London, London, United Kingdom
evolving landscape. Key Responsibilities. Advise product, engineering, and technology teams on AI-related projects and product development initiatives Provide guidance on intellectual property, copyright, open-source licensing, and broader legal risks associated with AI products. Support responsible AI development by advising on emerging regulatory and compliance requirements. Partner … experience advising technology businesses Proven Product Counsel experience supporting product launches from concept through to market. Strong intellectual property expertise, particularly copyright risk and open-source licensing, including CC-BY-4.0, Apache 2.0, and MIT. Strong understanding of AI-related legal, regulatory, and commercial considerations. Experience partnering closely ...

Security Operations Room Operator

Hiring Organisation
Sapient Insight
Location
London Area, United Kingdom
Company Description Sapient Insight advises clients on strategic opportunities and risks by turning complex information into clear, actionable insight. Using digitised human networks and open-source analytical software, the company sources verified, novel, and relevant data that gives clients a competitive advantage and supports better, faster decisions. Sapient … analytical and observation skills for monitoring multiple information sources, identifying anomalies, and assessing security-related risks. Proficiency with security monitoring systems, dashboards, and basic open-source information tools or intelligence platforms. Effective written and verbal communication skills for logging events, producing incident reports, and coordinating with internal ...

Senior & Principal Java Camunda Enigneers

Hiring Organisation
Casci
Location
South East London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
event-driven design and message brokers ( e.g. Kafka, RabbitMQ) Understanding of agentic AI capabilities and how they can complement workflow automation Experience contributing to open-source Camunda extensions Holds UK security clearance What We Offer Meaningful missions. Tackle high-impact public-sector problems that improve services millions rely ...

Software Development Engineer in Test - DV Cleared

Hiring Organisation
NSD
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Cloud Platform. Knowledge of performance, security, or accessibility testing. Experience with infrastructure-as-code or container technologies including Docker, Kubernetes, or Terraform. Contributions to open-source projects or technical communities. What's on Offer Opportunity to work on technically challenging programmes with real-world impact. Collaborative engineering environment ...

Lead AI Engineer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
Gemini), machine learning libraries (e.g. scikit-learn, XGBoost). Experience with data storage for AI, vector databases, semantic search, and knowledge graphs. Contributions to open-source AI projects or research publications. Familiarity with AI security, privacy, and compliance standards e.g. ISO42001. Embracing our differences At Kainos, we believe ...