226 to 250 of 871 Open Source Jobs in London

Staff Engineer, AI/ML

Location
Greater London, England, United Kingdom
rapid prototypes, and bringing them to production with a focus on measurable ROI. Familiarity with distributed systems and large-scale data processing. Contributions to open-source projects or a strong GitHub portfolio. Thought leadership, any articles or talks you’ve given? High levels of technical curiosity ...

Senior Platform Engineer (12 month Fixed Term Contract)

Location
Teddington, England, United Kingdom
messaging, and infrastructure platforms, including orchestration services (Kubernetes) running on virtual platforms. Administering, maintaining, and securing Linux environments, including Linux/DevOps tooling and open-source Linux databases. Assisting with the administration, maintenance, and optimisation of VMware vCenter and vSAN environments. Supporting the management and utilisation of Public ...

Remote Sr. Software Engineer, Fullstack (UK)

Location
Sutton, South West London, United Kingdom
agents in development workflows. Experience in enterprise SaaS organisations, particularly HR Tech or regulated domains. Familiarity with ML/AI integration in production systems. Open-source contributions or a history of side projects. Why Firstup? Because you care - about people, the work you do, and the connections ...

Senior Developer WordPress PHP

Location
Greater London, England, United Kingdom
MacOS developer environment. For front-end development, we value a robust understanding of the underlying web technologies. We value well-maintained, open-source tools that can be used to produce semantic HTML, performant CSS and unobtrusive JavaScript and we assess all our services against accessibility criteria. Check ...

Lead DevOps Engineer

Location
Greater London, England, United Kingdom
regulated workloads. Experience with data‐intensive systems such as Spark, Databricks, or Data Mesh. Programming experience in Go, Python, or TypeScript. Contributions to open‐source or CNCF community projects. Job Benefits How we work: Hybrid working and the option to work from almost anywhere ...

Software Engineer

Location
Greater London, England, United Kingdom
people with the following attributes: Exceptional ability. Whether in work, school, side projects, or elsewhere, you will have demonstrated exceptional ability. We are open minded about the exact form this takes. You have played a key role in an early stage startup You have won hackathons, math, or physics … competitions You have an impressive side project, like a popular blog or open source library. Excellent communication. In speech and writing. Conscientiousness. You want to do good work, regardless of oversight. You are excited to have freedom to work without too much process and friction ...

Software Developer-Backend (SFIA4)

Hiring Organisation
Hackajob Ltd
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
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 ...

Senior Engineer (Full-Stack)

Hiring Organisation
Liquidnet
Location
London, UK
Employment Type
Full-time
PowerShell. CI and CD flows within an enterprise environment. Continuous DeliveryAgile tooling to support team delivery, such as JIRA and other project management systems. Open to innovative ideas/experiences and ability to create new ideas, approaches or insights. Seeks opportunities for improvements. Demonstrates high levels of energy … company values. Excellent attention to detail, highly organised with a proactive approach. Strong analytical ability and innovative problem solving skills. Software Design Patterns. Source control (Git).Desired: OOP \ SOLID Principles. Demonstrable experience of C# (.Net 8+) in a professional environment. Contribution to open-source projects. Experience ...

Remote Customer Success Engineer

Location
London, United Kingdom
Customer Success Engineer About Budibase Budibase is an open-source workflow platform used by over 200,000 teams to transform their internal processes. We empower IT teams and software developers to build internal web apps, automations, and forms by connecting to their existing databases and APIs. What … similar low-code platform. Why Join Budibase Remote & Flexible Work: Enjoy the freedom of remote work with flexible hours. We are also open to negotiating a 4-day work week. Competitive Compensation: We offer a competitive salary of £30,000 - £50,000, depending on experience. Equity: Every team member ...

ai engineer in payments

Location
Greater London, England, United Kingdom
governance, or MLOps an advanced degree in AI, Computer Science, Data Science, or related disciplines AI/ML research, publications, patents, or open-source contributions knowledge of payments, fintech, or financial services Условия No conditions specified #J-18808-Ljbffr ...

Senior / Principal Go Engineer

Location
Greater London, England, United Kingdom
scale Knowledge of other languages such as Kotlin, Java, or Python Background in financial services or large-scale engineering environments Experience contributing to open-source or internal frameworks What we offer Work on a high-profile, long-term programme with a global financial leader. You’ll have ...

Director: Lead Data Engineer

Location
Greater London, England, United Kingdom
processing and streaming technologies like Apache Kafka or Azure Event Hubs Knowledge of data visualization tools, such as Power BI or Tableau Contributions to open-source projects or active participation in the data engineering community #J-18808-Ljbffr ...

Principal Software Engineer

Hiring Organisation
Profile 29
Location
South East London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
level React Native or equivalent building native mobile from a React codebase Design system or component library ownership Consultancy or client-facing delivery background Open-source contributions, conference talks, or published technical writing Polyglot beyond Java Other Stuff NB: for non-UK Citizens; we cannot accept applications from ...

Principal Full Stack Software Engineer

Hiring Organisation
Profile 29
Location
South East London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
level React Native or equivalent building native mobile from a React codebase Design system or component library ownership Consultancy or client-facing delivery background Open-source contributions, conference talks, or published technical writing Polyglot beyond Java Other Stuff NB: for non-UK Citizens; we cannot accept applications from ...

cloud engineer for connected devices

Location
Greater London, England, United Kingdom
/C++, systems programming languages, AI-assisted development workflows, AWS Bedrock, AI-powered development tools, prompt engineering, robotics, consumer electronics, smart home products, open source contributions, mentoring engineers, Step Functions, API Gateway, S3, Athena, distributed tracing, Claude Code, GitHub Copilot. Условия Competitive health insurance. Retirement plans. Paid time ...

Senior Staff Forward Deployed Engineer

Hiring Organisation
Uniphore
Location
London, UK
Employment Type
Full-time
experience Hands-on with dedicated Agentic AI platforms (e.g. Agentforce, Copilot Studio) Knowledge of AI compliance requirements: GDPR, EU AI Act, SOC 2, HIPAA Open-source or research contributions to LangChain, RAG, or Knowledge Graph communities Location preference: UK - LondonUniphore is an equal opportunity employer committed to diversity ...

AI Engineer

Location
Greater London, England, United Kingdom
years of experience in software engineering, AI engineering, or ML systems**We value evidence of building, including:*** Shipped products* Real systems running in production* Open-source contributions* Side projects and experimentationDemonstrated delivery matters more than credentials.**Why Join SLR**You will help build real AI systems ...

Lead AI Solutions Architect

Hiring Organisation
Source Group International
Location
London, UK
Employment Type
Full-time
real-time inference APIs. Demonstrated ability to apply AI FinOps (Token Economics), managing the cost-performance trade-offs between proprietary LLMs and fine-tuned open-source models (e.g., Llama/Mistral). Proficiency in "vibe coding" and AI-native development workflows, utilizing Agentic IDEs and LLM-driven code ...

AI Native SW Eng

Location
Greater London, England, United Kingdom
strategy, vector search, context window engineering and tuning against real quality targets Integrate and abstract across multiple LLM providers — OpenAI, Anthropic, Vertex AI, and open-source models — with fallback routing, token, cost, and latency management Implement LLMOps in production: eval harnesses with real quality metrics, prompt versioning, observability ...

Principal Automation Test Consultant

Location
Greater London, England, United Kingdom
success and leading by example. You will: Design and Develop: Build and support automation or performance test frameworks using the most appropriate solutions. Whether open source or commercial, or a combination. Collaborate with Clients: Work closely with clients to understand their requirements and create tailored QA strategies. Provide ...

Infrastructure Software Engineer, Apps Platform

Location
Greater London, England, United Kingdom
focused startup, owning a product end-to-end Experience running secure workloads in multi-tenant or untrusted environments (e.g., FaaS, CI sandboxes, remote notebooks) Open-source contributions to systems or developer-tools projects History of on-call/incident response for production systems PLEASE NOTE: Our policy requires ...

Solutions Engineer - EMESA North (Presales)

Location
Greater London, England, United Kingdom
Value a culture of openness, collaboration, and constant evolution. Bonus points if you’ve worked with APIs, cloud-native platforms, AI-enabled systems, or open source, but curiosity matters most. Life at Gravitee At Gravitee, we invest in humans, not just roles. You’ll get: Competitive medical coverage ...

Senior Software Engineer

Location
City Of London, England, United Kingdom
follow through Value collaboration, openness, and continuous improvement Bonus points if you’ve worked with APIs, cloud-native platforms, AI-enabled systems, or open source, but curiosity matters most. Life at Gravitee At Gravitee, we invest in humans, not just roles . You’ll get: Competitive medical coverage ...

AI Native SW Engineering

Location
Greater London, England, United Kingdom
integration standards: vendor‐agnostic architecture by default, fallback routing and cost governance as standard design practice across providers including OpenAI, Anthropic, Vertex AI, and open‐source models Own LLMOps at programme scale: eval strategy, prompt governance, observability tooling standards, safety monitoring and cost controls across multiple concurrent systems ...

Senior Oracle Infrastructure Engineer

Location
Greater London, England, United Kingdom
future.Your RoleYou will design, deploy, manage and operate Oracle technology solutions across the spectrum of modern infrastructureYou will be required to work with modern Open Source or third-party solutions on occasionWorking with complex and fully integrated business products such as Oracle e-Business Suite or Oracle SaaS ...