76 to 100 of 106 React Jobs in the City of London

Developer, .NET 10.0, C# 14 - Digital Download Site - London (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Programmer, Full Stack Engineer, Architect, .NET Developer)With operations in over 20 countries our client has fast become a major … Core, C# and Azure SQL. You will be trained in all aspects of: .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Azure, Bootstrap, Agile and MongoDB. Top performers can expect to receive their first promotion (and pay rise) within 6 months. ...

into intuitive, high-performance analyst experiences. The Tech Ecosystem You will be working in a modern, distributed environment that prioritizes engineering excellence: Core Stack: React, Next.js, and TypeScript. Architecture: Micro-frontends (Capla/Vue) and Module Federation. Data: Integrating with Java/Spring Boot services via REST and GraphQL. Cloud … improvements. Who You Are The Professional: You have 4+ years of experience building production-grade web applications. The Specialist: Deeply proficient in TypeScript and React . A willingness to work within a Micro-frontend architecture is essential. The Collaborator: You enjoy working closely with Product, Design, and Compliance teams ...

operate in ambiguity. Non-Negotiables Python FastAPI – or adjacent Python frameworks API design and backend architecture fundamentals PostgreSQL and/or MongoDB experience Strong React or React Native experience AWS serverless infrastructure and Docker experience for bespoke services Nice to Haves B2C mobile app experience Node.js development alongside Python Vector ...

arent a perfect fit): 4+ years of software development experience Proficiency in JavaScript Proven experience working with frontend frameworks such as Vue.js/React/Angular (or similar) and related tools and libraries Ability to take complex designs from Figma and convert to corresponding HTML/CSS/JS code ...

will take ownership of building and scaling a modern full-stack application, including: Developing and maintaining a full-stack web platform using Next.js (React) on the frontend and Node.js (Express) on the backend Integrating Claude AI (Anthropic API) to deliver features such as document summarisation, semantic search, and conversational assistants … Designing and building RESTful and GraphQL APIs to support real-time, dynamic user experiences Creating responsive, accessible UI components using modern React patterns (hooks, context, server components) Implementing secure authentication and authorisation using JWT and OAuth, including role-based access control Optimising application performance, improving page load times through code ...

Full Stack Software Engineer (Python/React) – AI-Forward Engineering Team I’m working with a fast-growing London-based health-tech scale-up building a personalised platform used by 100k+ customers, and they’re looking to hire a backend-leaning Full Stack Engineer to help scale their product. This … basic Copilot usage, they want engineers who have thought about how AI changes the way software is built. Tech environment Python (backend – core focus) React + TypeScript (frontend) AWS (cloud infrastructure) Microservices/modern web architecture Engineers work across the stack, with roughly a 60/40 backend split. What ...

front-end technologies. You will write clean, maintainable code and ensure optimal performance across all devices. Key responsibilities: - Develop new user-facing features using React, Vue, or Angular - Build reusable code and libraries for future use - Ensure the technical feasibility of UI/UX designs - Optimise applications for maximum speed … What we're looking for: - 3+ years of front-end development experience - Strong proficiency in JavaScript, HTML, CSS - Experience with modern front-end frameworks (React, Vue, or Angular) - Knowledge of RESTful APIs and async request handling - Familiarity with version control tools (Git) - Understanding of cross-browser compatibility issues - Experience with ...

SharePoint Online Lead migration of SharePoint 2016 on-premise solutions to SE and Online Build SPFx web parts, extensions, and integrations using TypeScript, JavaScript, React, and REST APIs Manage updates, patches, and service packs to ensure stability, security, and compliance Administer service and web applications, site collections, permissions, authentication … Edition (SE) and SharePoint Online, including migration from SharePoint 2016 on-premise Strong expertise in SPFx development and modern front-end technologies (TypeScript, JavaScript, React, HTML5, CSS3) Experience integrating SharePoint solutions using REST APIs, Microsoft Graph, C#, and .NET Hands-on management of on-prem SharePoint environments, including patching, upgrades ...

.NET Developer (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Programmer, Full Stack Engineer, Architect, .NET Developer)In just over 5 years our client has established themselves as the world's leading internet subscription service for enjoying … have a sound understanding of object orientated (OO) development and a skill that that includes: .NET 10.0, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI and MongoDB. This is an excellent opportunity for a .NET Developer to working within a challenging supportive environment. Top performers ...

Junior .NET Developer - Online Film Rental Company - London (Tech stack: Junior .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Programmer, Full Stack Engineer, Architect, Junior .NET Developer) In just over 5 years our client has established themselves … following (full training will be provided to fill any gaps in your skill set): .NET 10.0, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI and MongoDB. This is an excellent opportunity for a Junior .NET Developer to working within a challenging supportive environment. Top performers ...

Full Stack Software Engineer - TypeScript/React/Postgres/AWS/Terraform/DevOps We are looking for a number of highly motivated Full Stack Software Engineers to join a fast-growing industrial tech startup focused on reinventing manufacturing. You will play a central role in building and scaling … looking for 2–5 years of full-stack software development experience, exceptions made for exceptional talent. Strong programming skills, ideally in TypeScript and React, with experience in Postgres, AWS, Terraform, and DevOps. Ability to work independently in a high-autonomy environment. Experience translating operational challenges into impactful software solutions. Bonus ...

Full Stack Software Engineer (C#/React) – Broadcast & Video Technology Location: London Area - Hybrid Full-Time Contract Rates: Negotiable We are looking for a versatile Full Stack Software Engineer to join our engineering team working on cutting-edge solutions in the broadcast and media technology space . This role combines … features across backend services and frontend applications Building and maintaining scalable APIs and microservices Developing intuitive and performant user interfaces using React Working with event-driven architectures and distributed systems Supporting and troubleshooting production systems Collaborating with engineers, product teams, and stakeholders to deliver high-quality solutions Contributing ...

take ownership and are comfortable working in a small, fast-moving team. Tech: TypeScript, Python Cloud infrastructure (AWS or similar) Modern frontend frameworks (React or similar) Databases and APIs Desirables: Experience in early-stage startups Exposure to workflow automation or AI-led products Experience building end-to-end systems … want to talk it through. Keywords: Founding Engineer, Product Engineer, Full-Stack Engineer, Fullstack Engineer, Full Stack Engineer, AI, Start-up, TypeScript, React, Python, AWS, Automation, Workflow Systems ...

days onsite) About the Role Seeking a Middleware Backend Engineer with hands-on experience in Shopify Hydrogen framework and expertise in Golang, ReactJS, AWS services, and microservices architecture. Responsibilities Implement UI designs by integrating Figma Mark into projects. Develop scalable backend services using Golang, NestJS, and TypeScript. Work with PostgreSQL … manner. Continuously explore and adopt new technologies to improve development efficiency and product quality. Required Skills Experience with Shopify Hydrogen framework. Proficiency in Golang, ReactJS, and TypeScript. Familiarity with AWS services. Experience with microservices architecture. Preferred Skills Experience with PostgreSQL and DynamoDB. Knowledge of GraphQL APIs. Experience with Docker. ...

Founding Engineer (Staff Level) | Build, Shape, Own (TypeScript, JavaScript, React.js, Node.js...) Salary: £100,000 to £120,000 (Equity on top) Location: London, Very Flexible Hybrid Working Early-stage product | AI + video + data We’re working with an early-stage, high-growth product business looking for a Founding Engineer … data handling (incl. video) What they’re looking for: Strong Staff/Principal level engineering experience Deep expertise across but not limited too: JavaScript, React.js, Node.js, TypeScript, GraphQL, AWS, Docker, CI/CD Experience working in startup/scale-up environments Comfortable operating with ambiguity and pace Able to challenge ...

Full Stack Engineer | TypeScript, React, Node.js, AWS | Hybrid (Central London - fortnightly) | £70-90k Would you like to join a team focussed on cutting-edge technology, in an environment that propagates exploring new tools & techniques? I'm working with an established fintech organisation that provide essential backend services for thousands … need Strong commercial experience with full stack TypeScript development (it's ok to have a backend lean or be fully full stack (Node.js/React/Next.js) Good experience of AWS and exposure to DevOps (for example, they would love someone to be keen on learning Terraform if they ...

shares + benefits Tech stack: Python (Django or Flask or FastAPI) - considering Engineers with a strong background in web development from any backend language React AWS This is a role built around ownership in the truest sense. Not in the overused job spec way, but in the sense that … people A pragmatic mindset, with a focus on getting things working in the real world rather than chasing perfection The stack is broadly Python, React, and AWS, but the emphasis is on capability rather than specific tools. The impact here is tangible! The systems you build directly support projects happening ...

We are: Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. ...

solving for the patient?” before you ask “what stack are we using?”. You’re comfortable in TypeScript and at home in React/React Native/Node (or similar), and you like working across the stack rather than being boxed into a narrow layer. You enjoy fast feedback loops … build. If that sounds like you, there’s a London‐based healthtech scale‐up you’ll probably love. They’re building a single React Native/TypeScript platform that powers GLP‐1 weight loss journeys across the UK and US markets, aiming to reduce the burden of obesity, diabetes ...

design and deliver cutting-edge front-end systems that power real-time investment decisions. You’ll be building intuitive, high-performance UIs in React/TypeScript, with a strong focus on data-rich visualisations that bring complex trading strategies and risk models to life. This role offers true ownership … operations. What you’ll do: Work closely with Portfolio Managers and Quants to translate trading needs into elegant, performant UIs. Design, build, and maintain React/TypeScript applications with real-time data visualisation. Own front-end architecture, ensuring scalability and high performance in latency-sensitive environments. Collaborate across front office ...

Role: Senior Developer Location : London (Hybrid) Tech: React, Svelte, JavaScript, GSAP, Three.js (bonus) Salary: Up to £80,000 plus benefits Are you interested in building interactive stories seen by millions? We’re working with one of the most recognisable media platforms globally, investing heavily in digital-first storytelling as part … scalable systems for visual storytelling Mentoring junior developers and raising the bar across the team What they’re looking for: Strong frontend experience (React or Svelte) Deep JavaScript knowledge (ES6+, async patterns, performance) Experience building interactive/immersive web experiences Strong CSS skills (animations, layouts, micro-interactions) Experience with GSAP ...

ownership of real-time video and data delivery across our digital content platform. Build and maintain frontend interfaces in TypeScript/React as needed, internal tooling means this is a lighter, cross-functional responsibility. Integrate LLM APIs and AI-powered workflows into product functionality, and leverage AI coding assistants … experience building backend services and distributed systems. Ability to read, understand, and contribute to Java-based systems. Frontend experience with modern frameworks such as React, Vue, Svelte, or similar technologies. Hands-on experience integrating LLM APIs from leading providers. Regular use of AI tools and coding assistants to increase development ...

Role: Software Developer (React) – Up to £120,000 + Bonus + Package Salary: Up to £120,000 + Bonus + Package Location: London (Hybrid Working) Skills: React as a main language (modern JavaScript/TypeScript) This firm is an elite technology company with exceptionally high standards , known for pushing boundaries … Some of the highest-performing and most complex front-end platforms in the world Building highly responsive, scalable, and elegant UIs using modern React Collaborating with a handpicked group of top-tier engineers across frontend, backend, and infrastructure What else is in it for you? Software Engineers are treated ...

+ meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 1/2 days in office 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the globe ...

toward impact. We’d rather ship the wrong thing quickly and learn, than waste weeks polishing what nobody needs. Our tech stack: Primary: TypeScript, React, Node, SQL Frameworks: Express, React-hooks, Redux, RTK, Mantine Infrastructure: Docker, GCP, Kubernetes, Tracing, Prometheus While familiarity with our stack is helpful, we value your ...