full stack ruby engineer jobs in London

Staff Full-Stack Software Engineer, (Forward Deployed), GPS London, UK 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...

Burendo is recruiting an experienced Full Stack Engineer to operate and improve production systems, delivering small changes, incident response, and ongoing platform reliability improvements. You will join an L2/L3 managed service team supporting critical applications across multiple technologies and clouds, with on-call duties and technical...

Alto Software Group is seeking a software engineer for a 12-month maternity cover, working 2 days per week in our London HQ. The role involves shaping a dual-stack architecture (C#, TypeScript) with AI-enabled development and AWS services.You’ll collaborate with product teams to design and deliver features end-to-end, balancing speed and quality in a...

A tech recruitment firm based in London is seeking a Senior Full Stack Engineer with experience in Python and modern frontend frameworks like React and TypeScript. In this hybrid role, the engineer will design backend systems, create scalable frontend architecture, and integrate complex systems. The ideal candidate is a strong communicator who enjoys...

VIQU Limited is seeking a Full Stack Engineer for a contract role in the UK, delivering across the stack from Python back end to TypeScript front end. The role involves on-site work in secure, air-gapped environments and close collaboration with customers and senior engineers.You will own features end-to-end, implement CI/CD, and help harden security while...

Robinhood is hiring a Senior Full-Stack Software Engineer in London. You will own the design and end-to-end delivery of features across the Prime surface—from backend services to frontend and backoffice screens.You’ll mentor teammates and push for robust, fault-tolerant systems with strong design discipline. Based in our London office with in-person...

As a Senior Full Stack Software Engineer at Cabiri, you will play a crucial role in designing, developing, and maintaining our software solutions. You will work collaboratively with cross‑functional teams, utilizing your expertise in both front‑end and back‑end technologies to create scalable and high-performance applications. The successful candidate...

Python Full Stack Product Engineer | Elite Start-UpBuild great products. Solve interesting problems. Make an impact.An ambitious start-up is looking for an exceptional Python Full Stack Engineer to join a small, highly talented team. You’ll help shape and develop an exciting product using Python, TypeScript and React, with the opportunity to take...

AJ Bell is hiring an experienced Full Stack Engineer to help build services powering apps and websites. You’ll work across the stack with Node.js, TypeScript, React, MongoDB and AWS, collaborating with Product, UX and Business teams to deliver reliable, scalable solutions.The team emphasizes engineering excellence, autonomy, and continuous improvement,...

State Street is seeking an experienced Java Full Stack Developer to join our Digital Asset team. You will deliver end-to-end product experiences across Java back-end services and modern UI components, enabling digital asset capabilities in a regulated financial services environment.You will build REST APIs, orchestrate microservices, and develop responsive...

Eames Consulting Group seeks a Senior Full Stack Engineer to join a product-focused team building customer-facing digital solutions. You will own delivery across the full software lifecycle, designing, developing and deploying modern cloud-native applications on Microsoft Azure.You will collaborate with Product, Design and Engineering to build across...

Online Filings is seeking a Senior Software Engineer to architect and develop our next-generation web application and API. This role requires technical leadership, hands‑on development, and mentoring of junior developers to ensure scalability, security and performance.If you are passionate about software development, enjoy solving complex problems, and are...

Senior Full-Stack Engineer - AI Startup (Typescript, Node, React) London - 4 days per week in the office Permanent | £120,000 - £150,000 We're working with an exciting early-stage AI startup building an agentic platform for institutional finance. The company is a small, high-performing team of fewer than 10 people, moving quickly and building towards its...

Zapp is hiring a senior full-stack engineer to own end-to-end development for iOS, Android, and web experiences. Join an AI-first company building rapid, customer-focused solutions with NestJS, React, and GraphQL.You’ll work across backend, web, and infrastructure, and bring AI into daily workflows to ship impactful features. We value curiosity, energy,...

A leading recruitment agency is seeking a Senior Full Stack Engineer for a 12-month remote contract. The ideal candidate has at least 4 years of experience in Python and Flask, along with a strong grasp of SQL databases. Responsibilities include architecting backend services and building responsive front-end interfaces. This role involves mentoring junior...

Starling is recruiting a Full Stack Engineer (ML Ops) in London to join our data-driven fintech teams. You will design and build scalable backend services in Java and robust frontends with React/Redux, deployed on AWS, with a strong focus on reliability and performance.This hybrid role values ownership, collaboration and practical problem solving. We offer a...

Accenture is seeking a Full Stack LLM Development Associate Manager - Anthropic/Claude to design and deploy Claude‑powered web apps, APIs and agentic workflows. You will work across strategy and engineering teams to deliver scalable AI solutions, with emphasis on tool use, context management and secure data integration.You will apply Anthropic SDKs and...

Fin, now part of Salesforce, is on a mission to help businesses provide perfect customer experiences. As a Senior Full Stack Engineer in Team Web, you’ll craft intuitive front-end experiences and build backend systems that power them, collaborating with product marketers, designers, and engineers across the business.You’ll work across UI, APIs, and...

Scale is actively hiring for a Full Stack Software Engineer (Forward Deployed) to work directly with public sector partners. You will craft end-to-end AI applications, design scalable architectures and guide secure cloud deployments across multiple regions.Join a mission-driven team shaping AI adoption for citizens and governments. You will be a technical...

Hayfin Capital Management LLP is hiring a Full-Stack Engineer to build our analytics workbench, enabling data-driven analysis and decision making across the business. You will own the in-house analytics platform, work across the full stack, and coordinate with an offshore vendor team to ensure timely delivery.The role emphasizes hands-on enterprise software...