1 to 25 of 95 Open Source Jobs in London

financial services client is seeking a Software Licensing Specialist to support the governance, processes and controls surrounding the consumption and contribution of Free and Open Source Software (FOSS). This role sits within an international team and involves close collaboration with Engineering, Tooling and Legal functions. … well suited to candidates with strong expertise in open-source licensing, or those with a background in Software Asset Management (SAM)/IT Asset Management (ITAM) within a commercial environment. The successful candidate will be a proactive self-starter, comfortable working independently and delivering to tight deadlines ...

financial services client is seeking a Software Licensing Specialist to support the governance, processes and controls surrounding the consumption and contribution of Free and Open Source Software (FOSS). This role sits within an international team and involves close collaboration with Engineering, Tooling and Legal functions. … well suited to candidates with strong expertise in open-source licensing, or those with a background in Software Asset Management (SAM)/IT Asset Management (ITAM) within a commercial environment. The successful candidate will be a proactive self-starter, comfortable working independently and delivering to tight deadlines ...

financial services client is seeking a Software Licensing Specialist to support the governance, processes and controls surrounding the consumption and contribution of Free and Open Source Software (FOSS). This role sits within an international team and involves close collaboration with Engineering, Tooling and Legal functions. … well suited to candidates with strong expertise in open-source licensing, or those with a background in Software Asset Management (SAM)/IT Asset Management (ITAM) within a commercial environment. The successful candidate will be a proactive self-starter, comfortable working independently and delivering to tight deadlines ...

Hiring for: Multiple founding-level engineering roles About Ossprey Ossprey is a UK based cybersecurity company building real time protection against malicious activity in open source software and software supply chains. We have recently closed our pre seed round, with an announcement coming soon, and we are moving … beta already in place, we are scaling the engineering team to build the platform, expand detection coverage, and shape a product experience that makes open source risk obvious and actionable. Where did we begin? In 2021, a major compromise in the NPM package UAParser affected tens of thousands ...

methods * Fine-tune and deploy LLMs in production environments * Apply reinforcement learning techniques (SFT, PPO, DPO, GRPO) * Run hands-on experimentation to outperform closed-source models * Break down ambiguous research ideas into structured roadmaps * Optimise open-source LLMs (LoRa, Llama etc.) for enterprise deployment One hire will … applied AI/ML (exceptional 3+ years considered) * Deep experience in fine-tuning + reinforcement learning * Experience shipping ML systems from research into production * Open-source LLM experience essential * Product-driven engineering mindset (Apple, LinkedIn, Amazon style environments ideal but must be willing to work in a start ...

+ 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 ...

platform for businesses and organisations to train their own LLM on their proprietary data. We can use non-conventional AI hardware and automatically source and combine GPUs (and other types of AI accelerators) from multiple cloud providers, enabling users to optimise for cost, duration or geographic location … interpersonal and communication skills, with technical and non-technical stakeholders. Nice to have: Visual design: Background in graphic design and/or visual arts. Open-source: Contributions to and experience in open-source projects. Startup experience: Experience with a startup work environment and wider ecosystem. ...

FinOps & Model Routing Framework Expertise : Hands-on development experience with one or more orchestration frameworks (e.g., LangChain, LlamaIndex, Semantic Kernel). Thought Leadership & Open Source : Published work (whitepapers, patents), conference speaking engagements, or active contributions to relevant open-source projects. Certifications : Professional-level cloud certifications (e.g. ...

tests, and third‐party audits by defining cryptographic scope, reviewing findings, and recommending mitigations. Represent the company in the external community through papers, talks, open-source contributions, or standards working groups where relevant. Support BD/product/customer‐facing teams with deep technical explanations of our cryptographic … consensus mechanisms, smart contracts, ledger model (account, object and UTXO model), Layer 2/rollups, and Bitcoin scripts. Demonstrated track record via shipped systems, open‐source contributions, or published research in cryptography, security, or blockchain venues. Behaviours and competencies: Strong communication skills with the ability to explain complex ...

Ability to debug complex systems, optimize for latency and cost, and navigate ambiguity. Proven Track Record: Demonstrable experience through previous roles, side projects, or open-source contributions in the AI/ML space. Bonus Points Fundamentals of statistics, machine learning, and deep learning. Experience with evaluation frameworks … observability tools. Contributions to open-source AI projects or published research. Familiarity with MLOps, model serving (vLLM, TGI), and infrastructure for AI at scale. Background in fine-tuning, RLHF, or working with open-weight models. ...

primarily office led. 🚀 Key Responsibilities Design and implement state of the art instruction tuning and information retrieval methods Fine tune and deploy large open source LLMs in production Apply reinforcement learning approaches including SFT, DPO, PPO and GRPO Develop models that outperform closed source alternatives Break down … fine tuning and deploying LLMs in production Strong hands on reinforcement learning experience Familiarity with SFT, DPO, PPO and GRPO Experience working with large open source language models such as Llama Strong engineering fundamentals and ability to write clean, production ready ML code Experience generating, curating or synthesising ...

What You'll Do As a Computer Vision Engineer at Ultralytics, you will be at the forefront of developing and refining our world-class, open-source AI models. You will drive the entire lifecycle of our models, from research to real-world deployment. Key responsibilities include: Developing, training … Excellent problem-solving skills and the ability to perform in a fast-paced, high-intensity environment. A strong portfolio of projects or contributions to open-source AI repositories. 🌟 Cultural Fit - Intensity Required Ultralytics is a high-performance environment for world-class talent obsessed with achieving extraordinary results. ...

design documents and lead technical discussions with internal and external engineering stakeholders. Uphold high standards for coding and testing as a steward of the open-source XRP ledger community, including active participation in code reviews. What We're Looking For 5+ years of hands-on software development experience … ability to explain difficult technical concepts to various audiences. Bachelor’s in Computer Science or a related technical field. Nice to have: Experience 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 ...

ground up, focusing on the flow of funds first to help businesses realize their product visions on a solid financial foundation. Starting with an Open Source Ledger (i.e. a database for financial transactions), we’re building a comprehensive suite of modern financial backend modules, including native and automated … leading SaaS companies and financial institutions like Booksy, Doctolib, and Liberis, along with many others worldwide. Our success stems from the trust in our open-source foundation, the high level of programmability of our solutions, and our software-first approach, moving beyond traditional payment business models. ...

Engineer | Data Visualisation | JavaScript | TypeScript London | to £200,000 depending on exp. I'm hiring a Senior Engineer to work on a widely-used, open-source charting library relied on by thousands of engineers building data-intensive products. This is not a typical frontend role. … product theatre. No endless hand-offs. Just proper engineering responsibility. Your work is visible and respected You’ll be contributing to a well-known open-source project used in serious production environments — experience that carries weight long after this role. A grown-up engineering culture No outsourcing. ...

supported in pushing the envelope alongside top pioneers in verification. Responsibilities Design and maintain robust testbenches and targeted tests using the organisation’s mixed open-source and proprietary verification environment. Develop and own comprehensive verification plans, ensuring coverage goals and test strategies are clear and defensible. Identify … resolve design defects efficiently. Oversee and refine the test infrastructure, including management of test suites, CI pipelines, and the improvement of both internal and open-source tooling. Requirements Strong debugging and analytical capability, able to isolate and resolve complex RTL and testbench issues efficiently. Proficiency in Python ...

Role : Full Stack Engineer Location: Glasgow, UK Hybrid: 2 days to office Job Type : Permanent role Summary: Looking for Expertise in advanced Java and open-source technologies. Skilled in Spring Boot, Hibernate, Microservices, Docker, Kubernetes, JPA, MySQL, SQL Server, Snowflake, REST API, Apache Kafka, Jenkins, CI/ ...

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 ...

Prompting, Reasoning & Agentic Systems Design, test, and optimize prompts for leading frontier models (GPT-4.x/5, Claude 3+, Gemini, LLaMA, DeepSeek, and emerging open-weight models). Apply advanced prompting and reasoning techniques, including: Chain-of-Thought, ReAct, Tree-of-Thoughts, Graph-of-Thoughts, Program-of-Thoughts Self … mitigation, governance, and compliance frameworks. Background in Computer Science, AI/ML, Engineering, or a related technical discipline. Experience deploying, fine-tuning, or serving open-source LLMs in production. Staffworx is a UK-based Talent & Recruiting Partner supporting organisations across Digital Commerce, Software Engineering, and Value-Add Consulting ...

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) Other Stuff NB: Please only apply if you are a UK National ...

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) Other Stuff NB: Please only apply if you are a UK National ...

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 ...

designing and deploying agentic solutions (agents, orchestration, context engineering, RAG, workflows) in production environments. Strong experience with AI platforms — OpenAI, Claude, Vertex AI, plus open-source models — including building abstraction layers to manage multi-provider pipelines. Strong programming experience in Python, Java, C# or equivalent; familiarity with evaluation ...

specialists. The successful candidate will meet all of the following essential criteria: Demonstrable experience in designing large scale cloud migration projects/programmes with open source and commercial software within AWS, Azure, GCP or hybrid Experience in operating within a multi-disciplined team and clearly communicating complex technology … Understanding of NCSC Cloud Security Principles and its practical implementations Aker Systems Attributes At Aker we work as a team, we are collaborative, hardworking, open, and delivery obsessed. There is no blame culture here: try things, and take responsibility for the outcomes. You are always part of the wider ...

Work in a fast-paced, collaborative technical environment Utilise programming languages and tools like React Native, React, Node.js, JavaScript, TypeScript, micro services, AI, ML, open source frameworks, DevOps, large data sets, and more Perform software development leveraging a test-driven development pattern Collaborate with digital product managers … Tuesdays, Wednesdays and Thursdays, and can work from home on Monday and Friday. Many of our associates have flexible working arrangements, and we're open to talking about an arrangement that works for you. What’s in it for you Bring us all this - and you’ll be well ...