full stack ruby engineer jobs in London

JPMorganChase is seeking a Software Engineer III in London to own end-to-end delivery of secure, full stack features using Java, Spring, and microservices. You will work with Kafka/event-driven patterns, CI/CD pipelines, and robust testing to improve performance and resiliency.You will mentor teammates, participate in architecture reviews, and help shape...

Data Science Festival is seeking a .Net Developer to take ownership of a core product platform that evolves with the organization. This senior role is primarily focused on enhancing the platform to deliver interactive experiences.You will closely collaborate with product, design, and engineering teams to improve features and security while integrating AI....

JuniorJunior is hiring in London to build an AI operating system for investment research. You will join a small, high-signal team shaping product and culture while delivering features that land with demanding customers.The role focuses on TypeScript/Next.js with PostgreSQL, building polished interfaces, and working directly with clients to inform product...

Are you a software engineer who thrives at the intersection of technical delivery and application ownership? At JPMorganChase, we build technology that powers one of the world's most trusted financial institutions — and we're looking for engineers who take pride in both the quality of their code and the integrity of the systems they own. This is your...

Wheely in West London is seeking a Full-Stack Engineer to help build privacy-first systems and architectures. You will work across the stack using React, TypeScript, and Node.js or Golang, collaborating with product managers, designers, and engineers to shape technical solutions from concept through production.The role offers hybrid work with an office-based...

InnoCraft (Matomo) is building privacy-first analytics features in a fully remote UK role. You will own innovation from concept to deployment, collaborating with CTO and senior engineers to deliver production-ready solutions that integrate into Matomo’s core platform.We seek a seasoned Full Stack Engineer with 3–5 years of backend PHP/Python and frontend...

Citi is seeking a Vice President-level Full Stack/Backend Engineer to join the Strategic Equity Solutions team. The role focuses on greenfield services to enhance trader workflows, with autonomy in technology decisions and direct engagement with users globally.The position supports hybrid work opportunities, emphasizes continuous delivery, and requires...

Model ML is an AI workflow platform transforming how financial institutions automate client-ready processes. We are seeking a highly skilled Full-Stack Engineer with 5+ years of professional experience to join our growing team.You will design and build scalable web applications using React and Next.js, with Python backend services, and contribute to...

Maxwell Bond is seeking a Senior Full Stack Developer to join a fast-moving HealthTech team building a new customer-facing platform using C#/.NET, React and Azure. You'll own significant parts of the backend and frontend, contribute to architecture decisions, and ship deliverables with an API-first approach.You'll work in a remote-first environment with...

Unmind is hiring a Software Engineer (Full Stack) on a 9-month parental leave cover. You will ship features end-to-end for enterprise clients, shaping the product with AI-assisted development using Claude Code.The role spans the stack—TypeScript, React, GraphQL, Node.js, Python, Golang, SQL—and emphasizes reliability, security, and observability. We...

Job Description Are you a software engineer who thrives at the intersection of technical delivery and application ownership? At JPMorganChase, we build technology that powers one of the world’s most trusted financial institutions — and we’re looking for engineers who take pride in both the quality of their code and the integrity of the systems they...

Oliver Bernard is seeking a Mid-Level Full Stack Engineer for a fast-growing B2B tech company building the next generation of its platform. The role is hands-on across the full product lifecycle, working with experienced engineers, product and design to deliver features that have a real customer impact.You'll own your work from development through...

Halian is seeking a Senior Full Stack Shopify Developer to join our fully remote team and deliver Shopify and Shopify Plus solutions for a portfolio of ambitious merchants. You will develop storefronts, apps, and integrations, implement Online Store 2.0 features, and build headless commerce with React, Next.js, Remix, or Hydrogen, while collaborating with...

Citigroup Inc. in London is seeking a hands-on SVP GenAI Full-Stack Engineer Lead to shape engineering culture and deliver AI-powered products. You will provide technical leadership, stay close to code, and collaborate with cross-functional teams to scale developer platforms and drive AI adoption.You will mentor engineers and set direction across frontend,...

Reccreate in London is seeking a top-tier engineer to join a visionary team at the forefront of AI-driven financial modelling. You will build a fast, intuitive UI, tackle complex rendering bugs, and optimise the AI agent’s data handling and context.You’ll own backend improvements, resolve API issues, and scale deployments for speed and reliability. As...

Engineer the future of global finance. At Citi, our Tech team doesn't just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team...

Our Future Health is seeking a software engineer to develop full-stack applications using TypeScript and Node.js. You will collaborate with cross-functional teams to deliver high-quality software and participate in code reviews to uphold best practices.You will engage in problem-solving and debugging complex issues while staying updated on emerging...

Hirematic (Integration) in London is seeking an experienced Senior Software Engineer to join our fast-growing team building innovative e-commerce solutions for global brands.You will design, develop, and maintain scalable web applications using TypeScript, React, and Node.js, collaborating with product managers and UX/UI designers to deliver new features...

Build the core Xybern workspace, focusing on high-performance data visualization, collaborative reasoning tools, and audit-ready export systems.What you’ll doCollaborate with the founders to define and execute the AI Workspace roadmap.Bridge the gap between cutting-edge research and production-grade reliability.Own a substantial part of the system, from...

Reelables in London (N1, hybrid) is hiring a Full Stack Engineer to join our product engineering team. You’ll work across the stack, delivering customer-facing features end-to-end—from intuitive user interfaces to APIs and data models that power real-time tracking.You’ll own features, collaborate with customers to translate operational needs into...