full stack ruby engineer jobs in London

What we do. Electric Car Leasing Why we do it. Greener. Fairer. Future. We’re looking for a Senior Fullstack Software Engineer (Python and React) to join our product and engineering team building the systems that power our ability to revolutionize the electric car leasing industry. Our tech stack is Python with GraphQL, React with Next.js, PostgreSQL and...

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world’s largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount...

At Expedia Group, we help travelers explore the world, one journey at a time. As a global travel company powered by passionate people, trusted partnerships, and leading technology, we connect travelers, partners, and advertisers through our consumer brands, B2B network, and travel advertising business.Here, you'll do meaningful work that helps millions of...

Addition is a growing technology consultancy delivering AI and ML solutions to UK government clients. You will lead and craft scalable software across front-end, back-end and data layers, combining hands-on engineering with technical leadership.Expect meaningful impact, modern tech and a supportive team. Hybrid role with one in-office day per week in...

Responsibilities Build and enhance complex GUI applications used in real-time environments Develop trading, operational and workflow management tools Design and build Python services, APIs and backend components Work on event-driven and distributed systems handling large volumes of data Create intuitive dashboards and visualisation tools for...

83zero Ltd in the United Kingdom is seeking a Senior Java Full Stack Engineer with strong backend and frontend experience, plus proven leadership and client-facing skills to deliver enterprise digital solutions.Design and build Java/Spring Boot microservices and React UIs, mentor teams, collaborate with clients and stakeholders, and drive REST APIs, cloud,...

throxy is building an ambitious AI-powered dialing and data platform in London. We’re seeking experienced fullstack engineers to own end-to-end systems, including frontend and backend work with TS/React (Next.js). A CS degree or equivalent and UK-based relocation with visa sponsorship are required.Join a small, senior team shipping core infrastructure that...

Senior Full-Stack Software Engineer (Java & React / Javascript / Angular)Would you like to help create products to support the sharing of scientific knowledge?Do you enjoy collaborating to solve complex technical problems?About the teamOur dynamic Agile Teams deliver the technology which facilitates researchers to publish quality scientific research. As a...

Lead Software Engineer, Full-Stack Applications – AI FluentFitch Ratings is seeking a Lead Software Engineer to join our global Ratings Technology team in London. This is an opportunity to build mission-critical platforms while helping shape the next generation of technology that powers how a world-leading credit ratings agency delivers insights. In this...

JPMorgan Chase & Co. in Greater London is seeking a Software Engineer II to build secure, scalable full-stack applications within Global Technology Asset Management.You will work in a cross-functional agile team to design, develop, and operate enterprise solutions across multiple technologies. You will own your work through production, apply problem-solving...

Arrows in London is seeking top-tier engineers to build the front-end and back-end of our products at speed. You’ll join a lean, talent-dense team and help shape scalable foundations for a global market.Must-haves include expert Python, PostgreSQL mastery, full-stack capability, and clear communication. Preferred: TypeScript, React, and experience with...

Wipro is looking for a Full Stack Java Engineer to join our digital engineering team supporting a leading global banking client. As the Full Stack Java Engineer, you will help design, build, and enhance secure, scalable enterprise applications that support critical business services. You will work alongside talented engineers, architects, and product teams...

Unmind is hiring a Software Engineer (Full Stack) to ship features that help employees of enterprise clients find the right mental health support. You’ll work with TypeScript, React, GraphQL, Node.js, Python, Golang and SQL, and use Claude Code to enhance development.This is a remote-first role with monthly travel to London. You’ll join a team focused on...

Starling Bank in London, UK seeks a Full Stack Engineer (ML Ops) to join our data-driven fintech team. Build scalable services, REST APIs, and frontend with React/Redux, leveraging Java and AWS in a hybrid setup.The role offers a base salary of £70K–£110K, permanent contract, and hybrid working up to 2 remote days per week. Visa sponsorship is not...

JPMorgan Chase & Co. in London seeks an experienced Software Engineering Leader to head the design, development and evolution of a critical risk analytics and reporting platform used by Risk managers and senior leadership across the firm.You will partner with Product, Risk, Data, Architecture and Engineering teams to deliver secure, scalable technology...

Grid Dynamics is seeking a versatile engineer to join a high-performing team building workflow automation platforms for a global investment banking environment. You will design, develop and deploy Java-based services, REST APIs and React frontends, collaborating with traders and operations to solve real business problems.You will work across Java, Node.js,...

Vecta Ltd is building AI-powered cybersecurity threat detection that scales across billions of events and integrates with analysts’ workflows. You will build analyst dashboards, ML models for anomaly detection and threat classification, and data pipelines for real-time ML insights.Expect collaboration with security researchers and fast iteration in a...

Capital Group is seeking an experienced Software Development Engineer II to contribute to the Enterprise Data Office Content Delivery team in a hybrid role. You will lead full stack engineering delivery, collaborating with business and product leaders to transform workflows into clear outcomes and technical specs.You’ll design and deploy modern full stack...

Infused Solutions Ltd in London is seeking a Senior Full-Stack Engineer to join an early-stage AI startup building an agentic platform for institutional finance. You'll contribute across the stack and own features end-to-end.You will work closely with founders, shape product and technical direction, and influence architecture while delivering...

Callsign is seeking a talented developer to join the Experience team on a 12-month fixed-term contract ideally starting in 2026. The role focuses on delivering coherent user experiences across the client portal, including enhancements driven by client feedback and data analysis.Key responsibilities include shipping features across the stack, improving...