full stack ruby engineer jobs in London

Warden AI Ltd. is seeking a Full-stack Product Engineer to build and evolve the core AI assurance platform. You will work across frontend development and backend services to transform complex audit workflows into reliable software customers trust.You will join an existing team, report to the CTO, and collaborate with product, data, and customer-facing teams....

Hayfin-Capital-Management seeks a seasoned Full-Stack Engineer to own and evolve the analytics workbench used for cross-team decision making. You’ll work across the full stack (Angular frontend, Python FastAPI backend) and coordinate with an offshore vendor team to keep delivery on track.This hands-on role targets teams shipping enterprise software with...

Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of approximately 219,000 dedicated people from around the globe. At Citi, you'll have the opportunity to grow your career, give back to your community and make a real impact. Job Overview Full Stack Engineer - React/ Typescript - Python (VP)...

Harnham - Data & Analytics Recruitment in London seeks a Full Stack Product Engineer to join a newly created R&D function. You will work with AI, Data Science, Data Engineering and Product Engineering teams to take products from concept through production.Responsibilities include leading development from concept to deployment, translating business needs into...

Stripe is seeking fullstack software engineers to build scalable products from a 0→1 stage within the Direct Surfaces Team. You will lead technical projects, design and maintain UIs and related APIs, and collaborate across teams to deliver features that scale with business needs.You should have 3+ years of industry experience, strong React and React Native...

Vega is seeking a Full Stack Engineer to build features end to end across our platform, spanning Java/Spring Boot services and APIs to React and TypeScript interfaces. You will work with AI tools as a core part of development, bringing AI-powered capabilities into the product.This is a London-based, in-office role four days a week. We value practical backend...

Broadridge Financial Solutions seeks a Senior Full Stack Developer to join the AI Enablement Team. You will design, develop, and enhance AI-enabled platforms with a focus on GenAI, vector stores, RAG, and context engineering.The role requires leadership, collaboration with architects, and delivering scalable software solutions. The ideal candidate has 7+...

DISCO is hiring a Senior Full Stack Engineer in London. You will lead design and implementation of scalable features, build secure APIs, and influence architecture alongside a small, high-impact team.The role requires deep Python/Django experience, REST API design, React.js expertise, and strong security sense. Hybrid work includes four days remote and one...

An EdTech disruptor in Greater London is seeking a Full-Stack Developer to join their innovative team. You will work closely with experienced leaders to enhance their platform, focusing on product development and customer success. This role requires expertise in React and NodeJS, exceptional problem-solving skills, and the ability to communicate effectively...

Pubitygroup in London is seeking a Full Stack Developer to build and enhance the Pubity Suite, an internal platform supporting major social brands. You will take ownership of the engineering work and make both technical and strategic decisions impacting various components of the business.The ideal candidate has over 4 years of experience in web application...

Scale’s rapidly growing Global Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of: Creating custom AI applications that will impact millions of citizens Generating high-quality training data for custom LLMs Upskilling and advisory services to spread the impact of...

Scale’s rapidly growing Global Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of: Creating custom AI applications that will impact millions of citizens Generating high-quality training data for custom LLMs Upskilling and advisory services to spread the impact of...

Seaport Global Holdings LLC is seeking a Full-Stack Engineer to join a growing team in London. The role focuses on building modern, complex systems with a strong CS/engineering background and hands-on coding across the stack, from data feeds to trading logic.The ideal candidate will write clear, efficient code in Java/Kotlin/Python and thrive in an...

Join a high-performing engineering team building the next generation of workflow automation platforms within a global investment banking environment. This team is focused on transforming complex, manual post-trade processes into intelligent, automated workflows. By combining modern software engineering, workflow orchestration and AI-powered document...

Elsevier seeks a Senior Full-Stack Software Engineer to design, develop, and deploy cloud-based applications for research and publication workflows. You will collaborate with stakeholders to shape requirements and drive architecture for scalable, performant services.The role emphasizes mentoring, TDD, and modern tooling (Docker/Kubernetes/AWS). A strong...

A cutting-edge tech company in London is seeking a Fullstack Software Engineer to enhance their development tools. This role offers an attractive salary of £140k+, stock options, and exceptional benefits. The ideal candidate should have extensive experience in Python and frontend technologies like Vue or React. This opportunity allows you to work on...

We are looking for a Full-Stack Engineer to build the Eigent desktop and web application. You will own the front-end architecture of our AI agent platform — a React/Electron app that lets users orchestrate, monitor, and interact with AI agents in real time.ResponsibilitiesArchitect and build features across the React/Electron desktop app and Next.js web...

AJ Bell is seeking an experienced Full Stack Engineer to help architect, build, and deploy APIs, web apps, data layers, and third‑party integrations across the stack (NodeJS, React, PHP, .NET Core, MongoDB, SQL). You will work in a cross‑functional squad focused on engineering excellence and customer value.We value a DevOps mindset, TDD practices, and...

HCLTech is seeking a Senior Java Engineer to strengthen its RMS Trade Processing platform. You will design and deliver scalable full-stack solutions using Java, Spring Boot, Angular, and React, contributing across backend and frontend components in a business-critical system.The role requires 8+ years of enterprise software experience, expertise in RESTful...

Hawksworth is seeking a hands-on Full Stack AI Engineer to build a new AI-native platform for the Energy and Oil & Gas sector. The role is remote with occasional travel to the London office, offering up to £90,000 base salary plus benefits such as private medical.You'll work on AI/LLM applications, agents, and APIs, with experience in Anthropic/Claude...