1 to 25 of 33 Open Source Jobs in London

infrastructure company, enabling organizations to build and operate scalable, secure, and sovereign infrastructure for modern AI, machine learning, and data-intensive applications. By combining open source innovation with deep expertise in Kubernetes orchestration, Mirantis empowers platform engineering teams to deliver composable, production-ready developer platforms across any environment … driven workloads, Mirantis delivers the automation, GPU orchestration, and policy-driven control needed to manage infrastructure with confidence and agility. Committed to open standards and freedom from lock-in, Mirantis ensures that customers retain full control of their infrastructure strategy. Job Description Mirantis is inviting an experienced and client ...

infrastructure company, enabling organizations to build and operate scalable, secure, and sovereign infrastructure for modern AI, machine learning, and data-intensive applications. By combining open source innovation with deep expertise in Kubernetes orchestration, Mirantis empowers platform engineering teams to deliver composable, production-ready developer platforms across any environment … driven workloads, Mirantis delivers the automation, GPU orchestration, and policy-driven control needed to manage infrastructure with confidence and agility. Committed to open standards and freedom from lock-in, Mirantis ensures that customers retain full control of their infrastructure strategy. Job Description Mirantis is inviting an experienced and client ...

+ equity We're hiring for a UK cyber security startup building a platform that helps organisations detect malicious open-source code and secure their software supply chain in real time. The product continuously scans dependencies, surfaces risk clearly, and helps teams prevent compromised packages from entering … curious about cyber security, this is a chance to build something genuinely important. Why this is interesting (especially if you like cyber) Open source and third-party dependencies are now one of the biggest attack paths for modern organisations. This team is tackling that head-on with ...

translate wireframes and prototypes to polished, accessible product UIs. Hands-on experience integrating LLMs/generative models into applications (OpenAI, Anthropic, local/open-source LLMs): prompt engineering, response handling, safety guardrails, RAG architectures. Good understanding of how large language models work, including transformer architecture, tokenization, attention mechanisms … component libraries (Figma workflows, design tokens) Background in regulated industries (healthcare, pharma, finance) with awareness of compliance and data governance constraints. Contributions to open-source projects, public talks or technical writing about LLM-enabled UX or frontend engineering. How to Apply Please submit your CV via the application ...

Junior Systems Engineer/Harrow (Hybrid)/Up to £35K & Great Benefits Open Answers ((url removed)) is a provider of premium quality digital technology services to blue chip customers and the public sector, specialising in cloud systems integration. Customers include British Airways, Allwyn (The National Lottery) and Channel … successful company you will have the opportunity to make the most of and enhance your skills, working as part of a great team. Open Answers provides a happy, respectful and collaborative working environment and we give our employees the freedom to find innovative solutions for themselves. Working conditions ...

practices for production deployment. Generative AI & LLM Integration - Proficient in working with Large Language Models including OpenAI GPT models, Anthropic Claude, Azure OpenAI, and open-source alternatives (Llama, Mistral). Experience with prompt engineering, fine-tuning, RAG (Retrieval Augmented Generation) architectures, vector databases (Pinecone, ChromaDB, FAISS), embeddings ...

solutions to complex technical problems independently Desirable experience Experience in designing and implementing Docker images through containerisation Experience in prototyping through reuse of existing Open-Source components Benefits In return, you can expect a planned, transparent progression with learning and development tailored to your role, an environment with ...

focused approach, ideally within fast-paced tech organisations (start-ups or scale-ups) Knowledge of Kafka, Cassandra, gRPC, and microservices is a strong advantage Open-source contributions are beneficial If you're a Senior Go Developer looking for a challenging 6-month contract with a forward-thinking tech ...

What you will bring to the team Fine-tune Large Language Models (LLMs) and other generative architectures. Optimise pre-trained models (OpenAI, Anthropic, or open-source LLMs) for business use cases using prompt engineering and reinforcement learning. Experiment with model configurations to balance performance, cost, and scalability. Build ...

experience when required using Java, Scala, or Python Strong experience with big data technologies Experience designing architectures on Microsoft Azure Experience with both open-source and vendor data platforms Strong understanding of architectural methodologies and design principles Experience designing microservices-based architectures Strong data modelling experience Understanding ...

guiding technical teams to deliver Desirable Experience DevOps practices and CI/CD pipelines Secure-by-design development and security best practices Contributions to open-source projects ...

capabilities across platforms. About the Role Lead the design, implementation, and fine-tuning of LLMs and generative AI solutions (OpenAI, Anthropic Claude, Gemini, open-source models). Build and optimize RAG pipelines , vector databases, and prompt engineering strategies. Develop AI-powered applications integrating LLMs with APIs, agents ...

shape. The product is an AI agentic based platform that writes production grade code. As a Machine Learning Engineer you'll take open-source LLMs (code and general models) and turn them into high-performance software engineer agents using supervised fine tuning and large scale reinforcement learning. This ...

with experience working with all levels of business. ** A background of leading teams of Engineers writing business critical/complex solution in polyglot/opensource languages (java, Golang, Python etc) ** Manage teams capacity, estimation to ensure the team is able to provide an appropriate view of work and suggest potential ...

Core Mission LLM Orchestration: Design and deploy sophisticated RAG (Retrieval-Augmented Generation) pipelines to query vast proprietary financial datasets. Model Optimization: Fine-tune open-source and proprietary models (GPT-4, Claude, Llama 3) for high-accuracy financial reasoning and sentiment analysis. AI Strategy: Collaborate with data scientists ...

development of complex data components and subsystems, taking ownership from design through to testing and defect resolution. Provide hands-on design and development using open source and commercial platforms. Define and enforce development best practices, coaching team members to maintain high-quality code and consistency. Collaborate with architects ...

LLMs, or multimodal AI. Understanding of ML concepts such as training, fine-tuning, optimisation, evaluation, and model drift. Experience building or adapting ML models (open-source or proprietary). Ability to design structured experiments and interpret model behaviour through metrics and analysis. Curiosity for emerging topics ...

commute to London.- Experience as a hands-on cloud architect CLOUD ARCHITECT ESSENTIAL SKILLS- Expertise in delivering AWS Cloud native solutions- Background in Open-source technologies and frameworks- Experience with micro-service based architectures- Experience working with structured architecture approaches (TOGAF or SAFe)- Leadership and stakeholder management experience ...

Proactive Approach to Navigating Technical Challenges. Experience of working within Fast-Moving Growth Environments or B2B Scale-UpsFocusing on Enterprise Clients Bonus: Contributions to Open-Source Projects or Public Security Tooling Responsibilities of Application Security Engineer: Cloud-Driven Engineering: Utilise Cloud-Native Services to Develop Resilient, Big Data ...

optimise flow, deliver customer value and modernise our platforms. Our bespoke mortgage system is built using Ruby on Rails, MySQL, JavaScript, and other open-source technologies, with a clear roadmap toward cloud-native evolution. Key responsibilities Lead, coach and inspire a stream-aligned product engineering team, fostering ...

both a people leader and a technical leader. Proficient in building highly scalable and reliable distributed systems in C++. Experienced in developing open-source software and contributing to collaborative blockchain communities. Collaborative approach with eagerness to share knowledge and work openly with diverse teams. Technical domain expert providing ...

influencing front-office engineering, tight event loops, and low-latency user interactions from the ground up. The firm's platform spans C++ to open-source tools, automated workflows, and massive data throughput - a great place for engineers who care about performance at scale. This is an on-site ...

parts of Enterprise Architecture fit together. Solid knowledge of software, hardware and architecture frameworks. Skilled in modern and emerging technologies, including cloud, open source, agile and digital services. Strong grasp of system performance, scalability, resilience and architectural design patterns. Job Offer Excellent pension scheme. Generous holiday allowance. Comprehensive ...

fundamentals, operating systems, and systems architecture Evidence of building things from first principles (not just using frameworks) Demonstrable passion for technology through personal projects, open source, or continuous learning outside work hours Desirable: Experience with systems programming (networking protocols, TCP/IP, multithreading, memory management) Low-level programming ...

scale, distributed system architectures Requirements: Expertise in crafting network services or asynchronous code using Rust . Ideally two years production Rust experience, or substantial open-source contributions. Ability to independently troubleshoot issues across the entire stack (OS, network, application) Experience developing distributed systems Package: This is a very ...