full stack ruby engineer jobs in London

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...

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,...

Thought Machine is hiring a Software Engineer for London to design and implement features across the stack, including frontend and backend work. The role focuses on security, performance, and delivering high-quality user experiences for banking clients.You will collaborate with backend and frontend colleagues, translate client requirements into concrete...

Lorien's leading banking client is recruiting a Clearing Full Stack Developer to join a major greenfield tech programme in Financial Services. You will contribute to an Asset Servicing platform, replacing legacy systems, across front-end, BFF, and microservices back-end.Ideal candidates have hands-on full-stack experience and can balance front-end and...

Full Stack Engineer - Frontend focusedLondon N1 – Full Time – Hybrid – Salary Dependent on ExperienceReady to revolutionize global logistics?Join Reelables and help us transform how the world tracks packages. We’re pioneering paper-thin smart shipping labels using Bluetooth and 5G to track millions of packages globally — and we’re building the...

Join a team that is redefining how enterprise infrastructure technology is built, delivered, and scaled. At JPMorganChase, we invest in our engineers - giving you access to cutting-edge tools, meaningful mentorship, and the opportunity to grow your career across one of the world's most complex and innovative technology organizations. Here, your work doesn't...

Requirements Multiple years of industry experience in a full stack web app development role (ideally in SaaS) Great knowledge of TypeScript and an appreciation for the language Appreciation for design and digital product craftsmanship Experience collaborating directly with product teams and designers, and a proven track record of delivering value to...

We’re looking for a talented, high-quality full-stack engineer to join our team We care about how well you build software, how you work within a team, and how fast you learn. Runna’s stack and problems will keep changing as we grow, so we’re looking for strong engineers who pick up new systems quickly and bring good judgement wherever they land, not a...

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...

Humaans is building the next generation of infrastructure for the workplace; software designed for companies that are scaling fast, operating globally, and pushing into new boundaries.What started as a system of record has evolved into a broader platform for operating people globally. With Athena, our agentic AI layer, Humaans moves beyond data management...

Hive Science is a tech start-up whose technologies are in use by many of the world’s largest brands including Land Rover, Edward Jones & numerous other fortune 500 brands. The Hive platform is delivering novel intelligence at the intersection of quantitative social psychology, behavioral science & AI/ML to accelerate & transform how work is done. We’re...

Full Stack DeveloperLocation: London – 2 days a monthSalary: up to 65,000We’re looking for an experienced Full Stack Developer to join a growing engineering team building modern, high-traffic SaaS products used by thousands of customers.This is an opportunity to work across the full development lifecycle, building scalable React front ends and Node.js...

Job Description BNY is seeking Engineers who amplify team impact through technical leadership and force‑multiplier behaviors. In this role, you will elevate those around you by raising engineering standards, accelerating delivery, applying sound technical judgment to complex problems, providing thought leadership and coaching others. You will use...

Thought Machine is seeking a Software Engineer to design and implement end-to-end features across the stack, delivering secure, scalable solutions with a strong focus on user experience.You will own components from backend services to frontend interfaces, collaborate with cross-functional teams, and translate customer requirements into deliverables....

Harnham is seeking a capable Full Stack AI Engineer to design and build production-ready AI applications using Python and TypeScript. The role spans frontend interfaces, backend services, APIs, and scalable architectures, with a focus on deploying LLM-powered solutions in secure environments.You will work with Docker and cloud platforms like Azure or GCP,...

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 citizensGenerating high-quality training data for custom LLMsUpskilling and advisory services to spread the impact of AIAs a...

True Talent Solutions Partners is seeking an experienced software/product engineer to join an early-stage team in London. You will embed with customer operations, translating real-world needs into AI-enabled software across the stack, from frontend to data models and deployment.You will own product areas from discovery to launch, engaging with leadership and...

Starling Bank in London is seeking a Full Stack Engineer (ML Ops) to join our data-focused engineering team. You will work across backend Java services and modern front-end interfaces using React/Redux, building tools that power ML-driven decisions in production.This role offers hybrid working with offices in London, and a chance to influence fintech...

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 We're looking for a hands-on engineering lead with a...

RedRock Consulting Ltd seeks an experienced senior full-stack contractor to own end‑to‑end features across the stack. You will craft React/TypeScript front ends, design Python/FastAPI or Node.js back ends, and shape data with SQL/NoSQL stores while ensuring secure, well-tested code.You’ll ship via GitHub Actions CI/CD, run in containerised...