1 to 25 of 109 Open Source Jobs in London

digital services that support the UK’s national security mission. Our client delivers high-performance technology solutions for the UK Public Sector, using modern open-source tooling and operating within Agile and DevOps environments. This role is ideal for someone passionate about designing robust, scalable architectures and influencing … Required exposure You’ll have significant hands-on experience across several of the following areas: End-to-end technical and solution architecture design Modern open-source technologies Cloud platforms (AWS preferred) Security principles and best practice IAM, OAuth, Cognito, OIDC (highly beneficial) Containerisation and orchestration (Docker, Kubernetes) DevOps ...

disaster recovery. • Experience of setting up CI/CD pipelines including production deployments • Configuration management tooling. • Package/dependency management solutions. • Commercial or open source observability tooling. • Comfortable provisioning platforms through IaC tools. • Robust understanding of on-premise infrastructure. • The ability to apply DevOps tools and practices … inform you that we are unable to provide detailed feedback to candidates who have not been shortlisted (for further consideration). Job Segment: Cloud, Open Source, Sustainability, Engineer, Banking, Technology, Energy, Engineering, Finance ...

full software development lifecycle, including architecture, technical design, C++ development, bug fixing, as well as functional and performance validations. Be part of the open-source XRP ledger community, setting high standards for coding, testing, and deployment. Actively participate in code reviews to maintain the high quality … Ability to learn new technologies and languages quickly. Ability to independently solve highly complex problems with creative solutions. Nice to have: Experience in developing open-source software and contributing to collaborative blockchain communities. WHO WE ARE: Do Your Best Work The opportunity to build in a fast-paced ...

that scale across thousands of nodes • Performance-critical modules for consensus, networking, and data pipelines • Internal tooling for observability, testing, and simulation • Contributions to open-source infra and protocol-level primitives What You Bring • 5+ years of backend engineering experience in systems-level environments • Deep knowledge of distributed … cloud-native infra • Familiarity with blockchain, cryptographic protocols, or decentralized coordination Bonus Points • Experience in zero-knowledge systems, MPC, or verifiable computation • Contributions to open-source infra projects • Prior work in Layer 1 or Layer 2 blockchain development Why Join • Stealth-stage impact with protocol-grade ownership • Competitive ...

reactive programming (e.g., Reactor, Coroutines) Domain-Driven Design (DDD) exposure Experience in data streaming technologies (Kafka, Pulsar, etc.) Interest in contributing to internal IP, open-source work, or technical communities What We Offer Competitive salary + bonus Flexible working arrangements Private health, pension, and generous holiday allowance Opportunities ...

case-management or service-orchestration platforms Understanding of agentic AI capabilities and how they can complement workflow automation Experience mentoring developers or contributing to open-source Camunda extensions Already holding UK security clearance (SC, DV, eDV) What They Offer A company option scheme gives their employees a stake ...

Edge Technology: Get hands-on with the full Esri product suite (ArcGIS Pro, Enterprise, AGOL), Microsoft Azure, MS SQL Server, PostgreSQL and the latest open-source platforms - plus AI/ML frameworks that power truly intelligent mapping and analytics.Diverse, High-Impact Projects: From single-discipline proofs-of-concept ...

model safety, bias mitigation, evaluation frameworks and governance. Background in Computer Science, AI/ML, Engineering, or related fields. Experience deploying or fine-tuning open-source LLMs. TECH STACK LLMs: GPT-4/5, Claude 3.x, Gemini 2.x, Mistral Large, LLaMA 3, Cohere Command R+, DeepSeek Frameworks: LangChain ...

platforms (AWS, GCP, Azure) and infrastructure-as-code tools such as Terraform. Background in data visualization or AI-driven UX design . Contributions to open-source projects or active participation in tech communities. Experience leading distributed teams in agile environments . What we offer A High-Impact Environment ...

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 ...

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 ...

experience with Python, modern development techniques, and design patterns. Experience in data science tools and ML tools (e.g., NumPy, pandas, scikit-learn, PyTorch) and open-source contributions (especially Python-based) would be a bonus. Familiarity with CUDA, GPU-based computations, end-to-end neural network training, MLOps ...

Data Science, Statistics, Computer Science, or related field. 5+ years of experience in data science and machine learning. Strong proficiency in Python, SQL, and open-source tools. Experience with Generative AI frameworks and production-ready model deployment. Familiarity with cloud platforms (e.g., BigQuery, Azure, GCS) and containerization (Docker ...

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 ...

years. As a Software Engineer, you will help lead the development of backend services for a government client leveraging the latest commercial and open-source technologies. This involves designing, developing, documenting and deploying backend services with a focus on high availability, low latency and scalability. Design, develop, document … clean code, documentation, defensive programming, automated testing and code reviews Working in Agile development and/or DevOps teams Using GitHub/GitLab for source control Test Driven Development with appropriate tools and frameworks Experience in Big Data technologies Experience in Public Cloud services, such as AWS Aker Systems ...

take ownership across the full development lifecycle, from system design and implementation to optimisation and release. You'll be working in an open, fast-moving environment where ideas get tested quickly and good engineering practices are taken seriously. If you like seeing your work go live within days … technology-driven organisations or start-ups Experience with Kafka, Cassandra, gRPC, and microservices architecture will also be beneficial, as well as experience contributing to open-source projects If you're a Senior Go Developer looking for a fast-paced, collaborative contract role where your work will ship quickly ...

ability to work independently and collaboratively Highly desirable AWS certifications (e.g., DevOps Engineer, Solutions Architect) Experience with AWS generative AI services (Bedrock, SageMaker) Open-source contributions demonstrating engineering best practices Benefits Work on cutting-edge generative AI projects Join a talented, innovative team Competitive salary and benefits package ...

software engineering skills with a focus velocity Excellent communication skills and the ability to flourish in a team Located in London/Paris and open to working in office Tech Stack: Python FastAPI Python, Typescript, or React Open source LLMs Building for production Benefits Currently Offered (likely ...

team Solid C# .Net experience 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 robust data ...

style. Nice to Have · Experience with model serving, quantisation, or distributed inference. · Exposure to containerisation and cloud environments (AWS/DO). · Projects or open-source contributions demonstrating capability and initiative. · Experience in data engineering, cybersecurity, prediction systems or financial systems. · Ability to own the delivery pipeline from ...

Experience building pipelines for scientific or healthcare data Knowledge of cluster compute, distributed training and GPUs Understanding of healthcare data or regulated environments Open-source contributions Cloud experience (AWS/GCP/Azure) Compensation & Benefits Excellent base salary Generous equity allocation from day one Comprehensive health & wellness package ...

leading by example. What Youll Be Doing 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. ...

startup environments, enjoy solving real problems, and learn quickly. Proven impact: Youve built and scaled products, led projects that made a difference, contributed to open-source, or delivered results that truly moved the needle. Why youll love it here Impact from day one: Your work goes live quickly ...

/ML lifecycle, model governance, and ethical AI. Hands-on experience with platforms such as AWS Bedrock, Azure AI Foundry, Google Vertex, and open-source AI/ML stacks. Familiarity with Agentic AI Frameworks and risk-based AI assurance. Strong grasp of DPIAs, data protection, and transparency requirements. … technical standards. Hands-on delivery of AI solutions - not just oversight. Preference for candidates with a "doer" mindset - technically capable and execution-focused. People Source Consulting Ltd is acting as an Employment Business in relation to this vacancy. People Source specialise in technology recruitment across niche markets including ...

Data & AI strategy. Key Responsibilities * End-to-end development of AI/ML solutions. * MLOps practices: CI/CD, model monitoring, retraining. * Use of open-source and enterprise tools (LangChain, Azure OpenAI, Databricks). * Generative AI features: embeddings, RAG, AI agents. * Clean, testable code with modern engineering practices. ...