full stack ruby engineer jobs in London

Blue Light Card. Individually great, together unstoppableThe Role and the TeamAt Blue Light Card, we’re on a mission to support our millions of members with meaningful digital experiences.We have recently undertaken a replatforming transformation, setting the foundations to tackle exciting greenfield projects and further enhance the experience for our...

About ElevenLabs ElevenLabs is an AI research and product company transforming how we interact with technology. We launched in January 2023 with the first human-like AI voice model. Today, we serve millions of users and thousands of businesses - from fast-growing startups to large enterprises like Deutsche Telekom and Meta. Our investors are some of the...

Certus Recruitment Group is partnered with a London-based fintech building a regulated stablecoin and digital payments platform. We are seeking a Senior Full Stack Software Engineer to join at an early stage and help build the application, financial infrastructure and settlement technology behind the platform.This is a hands-on role, collaborating with the...

Runna is seeking a senior software engineer to join the Train Team, collaborating with modelling/AI experts to integrate features into the Runna training platform. You’ll work closely with the CTO and leadership to shape the engineering roadmap and deliver impactful products for runners.You’ll contribute across frontend and backend, shipping end-to-end...

Monument in London seeks a capable Full Stack Engineer to own mobile and web platforms, building scalable, secure apps with a strong AI-first approach. You will work across front-end and back-end, partner with Product and Data teams, and contribute to a regulated financial services environment.You will design, implement and monitor solutions with modern...

Ebury is building an AI-powered financial crime investigation platform. We seek a Senior Full-Stack Engineer to scale the system from React frontend to Python FastAPI backend and integrate LangGraph-based AI workflows.You will mentor teammates, shape architectural direction, and work across Product, Design and Compliance to deliver impactful features. Join a...

Enfint ищет опытного разработчика полного стека для автоматизации сетевых технологий и продуктов в рамках инфраструктуры. Вы будете вносить вклад на всех уровнях приложения, работать с RESTful API и...

Liberty Global Plc seeks a senior platform engineer to design, build and own platform capabilities across frontend, backend, APIs and cloud infrastructure. You will lead architecture reviews, drive scalable and secure designs, and deliver production-grade software from concept to deployment and support.You will evaluate complex technical challenges, guide...

Autonomai Recruitment's client, a well-established fintech, is expanding its London engineering team. You will own features across the full stack, from backend services to the UI, and work closely with product, design and the business.Join a small, senior group with end-to-end ownership; contribute to APIs, data services, and platform infrastructure as the...

A technology-driven organization based in London is seeking a Full Stack Developer for a full-time permanent role. The candidate will develop scalable APIs and maintain web applications while collaborating closely with teams. Ideal applicants have over 4 years of experience, outstanding skills in both frontend and backend technologies such as React and...

Minerva Defence is seeking a full stack software engineer to take feature requests from frontline users and design, implement, test and ship them. You will own the work across the stack—from backend to frontend, and into networking or ML as needed.You will work on products used by operators daily, delivering reliable updates and field testing. The role...

Vanguard is seeking a Senior Full Stack Software Engineer to design, develop and optimize front office applications within the GIFS team. You will collaborate directly with portfolio managers and product owners to deliver high-impact software.The role requires deep experience in frontend and backend technologies, cloud platforms, and distributed...

Zühlke Group is seeking a Senior Software Engineer in London to join a high-performing engineering squad. You will own backend services in Kotlin or Java, contribute to API design, and deliver features with robust testing and scalable frontend interfaces.You will work with React/TypeScript on the frontend and leverage cloud and container technologies to...

IFS is seeking a Senior Full Stack Engineer to shape and deliver scalable, cloud-based IndustrialAI solutions. You will provide technical leadership across front-end and back-end, influence architecture, and evolve the platform into a secure, observable product portfolio.You will work across GoLang and React, mentor engineers, and champion DevOps, testing,...

Scale is seeking a Senior Full-Stack Software Engineer (Forward Deployed) to partner with public sector clients in London. You will rapidly build full‑stack AI applications that solve complex problems and deliver measurable impact for citizens.You will architect production‑grade apps that fuse AI models with UI and backend APIs, deploy and manage cloud...

Humaans is hiring a Software Engineer to help build and evolve a next‑generation AI‑powered HR platform. You’ll work across the product and stack, shaping features from definition to release, spanning frontend and backend, infrastructure, and integrations to deliver a better customer experience.You’ll collaborate with Product and Design, own features...

Neo4j is seeking a software engineer with deep front-end expertise to join the Graph Engine team and work on Virtual Graph. The role centers on React for UI, with opportunities to contribute across backend systems, cloud, and connectivity.You will influence UI technical direction, collaborate with experienced engineers, and help build a product that queries...

Expedia Group in London is seeking a seasoned Fullstack Engineer in the Product Experience team to build and maintain high-availability property detail pages and services. You will be part of a multi-functional team across PMs, TPMs, and engineers, with colleagues in London and other hubs.The role emphasizes scalable, performant systems, collaboration across...

Willis Re is hiring a Full Stack Engineer to build the platforms powering its reinsurance analytics and client-facing solutions. You will work across the stack, shipping end-to-end features on Azure, with a focus on data-driven UI and AI-enabled capabilities.Ideal candidates have strong C#/.NET or Python skills, experience with React/Angular, and a solid...

Robinhood Markets, Inc. in London is seeking a Senior Full-Stack Software Engineer to own end-to-end delivery across the Prime platform for institutional clients.You will lead feature development from backend services to frontend and backoffice surfaces, mentoring peers and raising the bar on reliability and design. Expect to work on core settlement,...