851 to 875 of 1,002 React Jobs in London

requirements of developers to deliver the right solutions to them.Design, implement, test, optimize and troubleshoot Python libraries, frameworks, and services.Design and add features to React frontends when appropriate.Collaborate with technologists to ensure that our data applications and data platform meet evolving business requirements.Work closely with data operations and data pipeline … services, or similar.Experience across multiple techincal domains: such as web development, data engineering, backend development, operations.Experience with any of these: SQL, JavaScript, TypeScript, React, C++, Rust.Experience with PostgreSQL, Redis or Valkey, FastAPI, Kubernetes, Helm, Hashicorp Vault, Hashicorp Nomad ...

developers to deliver the right solutions to them. Design, implement, test, optimize and troubleshoot Python libraries, frameworks, and services. Design and add features to React frontends when appropriate. Collaborate with technologists to ensure that our data applications and data platform meet evolving business requirements. Work closely with data operations … similar. Experience across multiple techincal domains: such as web development, data engineering, backend development, operations. Experience with any of these: SQL, JavaScript, TypeScript, React, C++, Rust. Experience with PostgreSQL, Redis or Valkey, FastAPI, Kubernetes, Helm, Hashicorp Vault, Hashicorp Nomad ...

within a week whether you have built something they need. The squad is small on purpose. You'll build the whole thing: the React front end, the Python services behind it, and the prompts, retrieval and eval harnesses that make an LLM feature safe enough to put in front … fast-track to exposing yourself to complex problems and pushing towards a Senior level. What you'll do: Build new products end to end: React/TypeScript front ends, Python services, and the LLM and voice pipelines in between Turn a one-page thesis into a working v0 in days ...

some of the key components to the position: Build and maintain customer-facing features across the entire stack using Java/Spring Boot and React Design, develop, and maintain REST and GraphQL APIs to ensure seamless data flow Develop efficient data models and queries using MySQL and DynamoDB Write clean … team? Experience developing applications in Java and building services with Spring Boot or similar backend frameworks Experience building modern web applications using React and strong knowledge of JavaScript or TypeScript Understanding of RESTful APIs and backend design principles, with exposure to GraphQL as a plus Experience working with relational databases ...

standards of the agency· Develops designs to an excellent creative standard, collaborating with other delivery functions· Full stack development using Word Press, NextJs/React, SCSS/JavaScript/TypeScript· Develops and progresses opportunities to diversify the development product portfolio, highlighting opportunities to expand the agency capability set· Demonstrates high … best practices, W3C and accessibility standards across both desktop and mobile web.Additional requirements· 2+ years development experience· Experience with modern front end frameworks like React and NextJs.· Understanding of back-end programming concepts· Previous Experience of Wordpress· Strong vanilla JS skills and front end experience.· Positive communication, strong work ethic ...

universe. We’ll trust you to:Build intuitive, production-grade product experiences for engineers working with data. Design and implement full-stack workflows across React-based interfaces, APIs, and backend services. Build control-plane systems that turn complex data infrastructure into simple, reliable user actions. Apply design thinking to technical … technical direction of the platform. You’ll need to have:Strong professional software engineering experience building production systems. Experience building reliable frontend applications using React, Vue, or a similar modern UI framework. Backend engineering experience in Java, Kotlin, Scala, Go, or another production backend language. Strong systems fundamentals across distributed ...

applications. Ship quickly using modern serverless and Backend-as-a-Service platforms such as Vercel, Supabase and Firebase. Build applications using TypeScript/JavaScript, React/Next.js and Node.js. Integrate AI capabilities, including LLM APIs, automation and agents, to improve and streamline business workflows. Work directly with stakeholders across … professional software engineering experience, ideally within a Full Stack role. Strong proficiency in TypeScript/JavaScript and modern web development. Hands‐on experience with React/Next.js and Node.js. Experience building and deploying applications using platforms such as Vercel, Supabase, Firebase or equivalent modern technologies. Experience owning applications beyond ...

frontend, backend, and infrastructure, and every team ships to production independently, without centralized approval. Wherever you land, you'll help shape a shared TypeScript, React, and Next.js codebase in a monorepo built for rapid, AI-assisted development, and you'll build against a company-wide design system so what … pipeline behind the data you're rendering. What We're Looking For The Essentials 3+ years of professional frontend development experience, with excellent TypeScript, React, and Next.js. Experience with MUI or a similar component library. Solid testing practice with frameworks like Jest and Cypress or Playwright. Proficient with Git, Docker ...

step orchestration, tool use, and retrieval grounded in our data stores using the Strands Agents SDK.Architect End-to-End Features: Own development across a React/TypeScript frontend and Python/FastAPI backend, balancing rapid iteration with platform maintainability.Own the Reasoning Layer: Extend our Chain-of-Thought UI to ensure … professional software engineering experience.Strong Python Backend Expertise: Deep experience with FastAPI (or Django/Flask), asynchronous programming, clean architecture, and writing production-grade code.Strong React & TypeScript Skills: Ability to architect non-trivial frontends with sound state management, performance optimization, and comprehensive testing.System Design Judgment: A proven track record of designing ...

real users and operated them — not a side experiment.Strong Python/TypeScript (if you don’t have Typescript, you will need to learn): React/Next.js (App Router, RSC, server actions), tRPC/GraphQL, Node/Express.PostgreSQL at scale via an ORM, with migration discipline on large, live schemas.Event-driven … renegotiates the scope out loud when it's wrong, not someone who absorbs it and hopes it works out.Stack & how we leadTypeScript core (React/Next.js, Node) with PostgreSQL and RabbitMQ as the event backbone, plus Python and Elixir services — from RAG pipelines to a Claude-powered edge-native product. ...

As a Software Engineer - Model Risk Governance & Review - Analyst at JPMorgan Chase in Model Risk Governance & Review (MRGR) team, you will be developing tools for MRGR Analytics to improve efficiency and reduce duplication of effort ...

About Andercore Andercore is the AI-native supplier of industrial materials for energy, infrastructure, and construction in wholesale and beyond. We trade with global suppliers and distribute to European customers on our own account. Our ...

As a Software Engineer - Model Risk Governance & Review - Analyst at JPMorgan Chase in Model Risk Governance & Review (MRGR) team, you will be developing tools for MRGR Analytics to improve efficiency and reduce duplication of effort ...

NodeJS Developer – FintechTo 90,000Quant Capital is urgently looking for a JavaScript/NodeJS Developer to join our high profile client. They have recently raised (PE and Bank) 50 million and are set for another ...

Junior Java Engineer TradingTo 75,000Quant Capital is urgently looking for a Java Developer to join our high profile client. They have recently raised (PE and Bank) 50 million and are set for another 100 ...

NodeJS Developer – FintechTo 90,000Quant Capital is urgently looking for a JavaScript/NodeJS Developer to join our high profile client. They have recently raised (PE and Bank) 50 million and are set for another ...

As a Software Engineer - Model Risk Governance & Review - Analyst at JPMorgan Chase in Model Risk Governance & Review (MRGR) team, you will be developing tools for MRGR Analytics to improve efficiency and reduce duplication of effort ...

seeking a talented React Native Engineer to join a fast-growing and innovative fintech organisation. The position is ideal for a React Native Engineer who wants to remain hands-on and play a critical role in advancing the mobile platform. You will collaborate closely with product managers, designers, and software … centric mobile experience for both iOS and Android platforms. The role offers excellent personal growth opportunities in a high-impact, fast-paced environment.As a React Native Engineer, you will take responsibility for designing, developing, and implementing new features that will enhance the user experience of a unique SaaS platform. ...

seeking a talented React Native Engineer to join a fast-growing and innovative fintech organisation. The position is ideal for a React Native Engineer who wants to remain hands-on and play a critical role in advancing the mobile platform. You will collaborate closely with product managers, designers, and software … mobile experience for both iOS and Android platforms. The role offers excellent personal growth opportunities in a high-impact, fast-paced environment. As a React Native Engineer, you will take responsibility for designing, developing, and implementing new features that will enhance the user experience of a unique SaaS platform. ...

staff+ engineer, backend-leaning but full-stack, to own the team's hardest technical problems in a TypeScript stack (Node.js on the backend, React + React Native on the frontend). You will set technical direction and own critical systems end to end. Join a fast-moving team in London ...

will work in small teams consisting of a BA, Implementation consultant, web and windows developer and a PM.All current development is built using React JS for the client side backed by WebAPI (C#) REST Endpoints. For managing application state, we use Redux and Immutable JS. Existing features which … active maintenance use the Backbone Marionette framework, but due to the impressive performance and productivity benefits of React, we have chosen to gradually phase out these older frameworks. We use open source JavaScript libraries extensively, most notably Lodash, Plotly Charts and React Virtualized.You will focus on a third-generation .NET ...

developer to build scalable web and desktop tools for traders and market operators. You'll design and implement apps using JavaScript, TypeScript and React, integrate with Python APIs, and work with CI/CD and testing to ensure quality and reliability. The role emphasizes ownership, collaboration with product, infra ...

machine-readable interfaces such as MCP Design component APIs that resist misuse by AI and human developers Write high-quality, performant frontend code with React and TypeScript Partner with design, product and engineering to define components and deliver production-ready solutions Make components accessible by default according to WCAG 2.2 … Real ownership of a design system or shared component library used across multiple products Expert knowledge of HTML, CSS and JavaScript/TypeScript Strong React experience and familiarity with modern build tooling Strong command of component API design, versioning and the developer experience of shared libraries Experience or strong interest ...

product and client-side surfaces from API to pixel. Our stack is TypeScript across the board with Node.js on the backend and React + React Native on the frontend. You’ll report into your team’s eng lead and partner with your product lead to ship production-quality experiences, prioritising ...

N+1$issues with select_related/prefetch_related). Celery & Task Queues: Experience building, testing, and troubleshooting background tasks with Celery and RabbitMQ. Frontend (React) – Desirable (Nice-to-Have) React & Tooling: Modern React built with Vite. UI Components: Hands-on experience with Material UI (MUI). API Integration: Comfortable connecting … React components to DRF endpoints and managing asynchronous UI states. ...