1 to 25 of 209 Permanent React Jobs in London

Senior Developer/Architect ( .Net/React/React Native/Azure ) Hybrid - Central/West London & WFH Circa £75,000 - £90,000 + Bonus and good benefits An exciting opportunity for a hands-on Senior Developer eager to make a real impact with architectural skills and deep experience … C#/.Net, React, React Native, and Azure. Our client is launching a major initiative to bring development in-house, and you'll be a key player as they migrate a monolithic booking system to .Net 10 Azure-native microservices. The Senior Developer will mentor a small team ...

Opportunity We are partnering with an innovative and fast-growing technology business to recruit a Senior Frontend Developer with deep expertise in React and React Native . This is a key hire within the engineering team, suited to someone who can take ownership of core frontend areas , work independently … confidently deliver complex features from development through to release. Key Responsibilities Develop and maintain web applications (React/Next.js) and mobile apps (React Native/Expo) Take ownership of features from concept through to production release (including App Store deployment) Design and implement robust frontend architecture and integration layers Manage ...

Full Stack Engineer with a strong track record in senior or principal-level roles Expertise in JavaScript/TypeScript and modern frontend frameworks (e.g., React, Angular, or Vue) Strong backend development experience (e.g., Node.js, Java, Python, or Go) Proven experience designing and building scalable, distributed systems Strong experience with REST ...

Full Stack Engineer with a strong track record in senior or principal-level roles Expertise in JavaScript/TypeScript and modern frontend frameworks (e.g., React, Angular, or Vue) Strong backend development experience (e.g., Node.js, Java, Python, or Go) Proven experience designing and building scalable, distributed systems Strong experience with REST ...

engineering excellence Required Experience Proven experience as a Senior Software Engineer working on scalable, production-grade systems Strong full-stack development experience (TypeScript/React and C#/.NET or similar) Deep understanding of software design principles, patterns, and architecture Experience building and evolving APIs, microservices, and distributed systems Hands ...

decisions and technical strategy Support CI/CD pipelines and cloud infrastructure Mentor developers and promote engineering best practices Tech Stack: Frontend: TypeScript, JavaScript, (React/Angular), HTML5, CSS3 Backend: Python REST APIs Data: MySQL, PostgreSQL, Redis Cloud & DevOps: AWS, Docker, CI/CD, Kubernetes (nice to have) Architecture ...

client stakeholders. Key Responsibilities Design and build applications using ASP.NET Core, C# and modern JavaScript frameworks Develop responsive, accessible front-end interfaces using React, Angular or Blazor/Razor Contribute to cloud-native architectures on AWS or Azure Implement modern DevOps practices including CI/CD pipelines and automated testing ...

client stakeholders. Key Responsibilities Design and build applications using ASP.NET Core, C# and modern JavaScript frameworks Develop responsive, accessible front-end interfaces using React, Angular or Blazor/Razor Contribute to cloud-native architectures on AWS or Azure Implement modern DevOps practices including CI/CD pipelines and automated testing ...

JavaScript frameworks) Experience working in Agile, user-focused product teams Nice to have: AWS or cloud platform experience BPMN tools (Camunda, Activiti, Flowable) React, Angular, or Vue.js OpenShift/container platforms Knowledge of cloud security principles Please note that all applicants must hold live and active UK eDV clearance given ...

Relevant industry certifications or a degree in Computer Science or a related discipline - desirable Key Technologies NestJS (Node.js) TypeScript TypeORM Azure SDK Git Next.js React TanStack MUI Benefits Circa £100k basic salary Discretionary bonus scheme Workplace pension (relief at source), matched up to 5% 30 days' holiday per annum including ...

work with the following technologies to ensure scalable, high-performance applications: Programming Languages: JavaScript/TypeScript, Java, C# Frameworks: Vue/Angular/React/Node/Next, Spring/Spring Boot, .NET/ASP.NET Cloud platforms: AWS, GCP, Azure CI/CD:Jenkins, GitHub Actions, Azure DevOps IaC: Terraform ...

Sitecore, Optimizely, Umbraco, Alterian, Immediacy, Ektron, Kentico, Sitefinity or dotnetnuke. Our client can provide you with industry recognised training in: .NET 10.0, JavaScript, React, Angular 21, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, ASP.NET Core Web API, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This ...

skills. Adaptability/willingness to learn (e.g., Agile). Technical leadership (mentoring, best-practice guidance). Desirable: Experience with modern frameworks and libraries (e.g., React, Node.js, Terraform, Celery). Experience with database schema design and query optimisation. Collaborate with cross-functional teams, including Product, QA, and DevOps, to deliver high ...

experience: Backend Development: Experience in building microservices using either Python with FastAPI, or TypeScript with Express or equivalent Frontend Development: Experience in building React applications using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or JavaScript ...

Clearance (or eligible and willing to undergo clearance). Strong Java and Spring Boot development experience. Proven experience delivering full-stack solutions (e.g. React, Angular, or Vue). Good knowledge of microservices , RESTful APIs , and containerisation (Docker/Kubernetes). Experience working with AWS or other cloud environments. Understanding ...

priorities in a fast-paced environment Technical Skills Power Platform (Power Apps, Power Automate, Power Pages, Power BI) Python, JavaScript, TypeScript, Angular or React ASP.NET Core, Entity Framework, REST APIs, Swagger/OpenAPI SQL Server, PostgreSQL, NoSQL databases, vector databases FastAPI and AI service integrations (OpenAI, Claude, Gemini) Docker, Kubernetes ...

traditional software projects. Required Skills and Experience Backend development using Python with FastAPI or TypeScript with Node.js or Express Experience building microservices architectures React and TypeScript front end development experience Familiarity with Next.js or Vite Experience with Generative AI frameworks such as LangChain, LangGraph or CrewAI Experience working with Large ...

Cloud/container experience and a security‐first mindset Confidence influencing technical decisions and improving teams Tech we commonly use Java • TypeScript • Python • Go React/Angular AWS • Kubernetes • Docker Elasticsearch • MongoDB • relational DBs CI/CD • GitOps • infrastructure as code Why join Gemba? We’re guided by four core ...

guiding others in best practices and troubleshooting. Requirements Must Haves 5+ years of experience in front-end development with modern JavaScript frameworks (Vue.js, React, Angular, etc.). Strong expertise in Vue.js and modern front-end architecture. Proven experience owning and delivering complex features end-to-end. Strong knowledge of HTML ...

Role Title: Senior React Native Developer Minimum number of relevant years of experience: 8+ yrs Technical Must Haves: Strong experience in Core React Native 0.81, TypeScript 5.x, React 19 Strong experience in State Redux Toolkit , Zustand , React Query , Apollo Client Testing Jest , React Native Testing Library strong requirement many test … files Any Certifications required: Preferred but not mandatory Performance Expectations : Core React Native 0.81, TypeScript 5.x, React 19 State Redux Toolkit Zustand React Query Apollo Client Testing Jest React Native Testing Library strong requirement many test files UI Styled Components 6, Reanimated, Gesture Handler, Lottie, Skia APIs GraphQL with codegen ...

innovative technology organisation is hiring a Full Stack Developer to build scalable, AI-powered applications on Microsoft Azure. The Role Develop modern UIs using React, TypeScript Build APIs and microservices (C#/.NET or Python) Integrate AI capabilities into web applications Work across Azure services (Service Bus, Event Grid ...

. Solid background in treasury, collateral, middle‐office, or financial operations technology. Strong programming skills in C# + Python Front‐end experience with Vue.js , React , or Angular . Experience with databases such as SQL Server, Databricks, or Azure SQL. Strong understanding of data structures, automation, and workflow optimisation . Familiarity ...

products using modern APIs and data-driven approaches Improving CI/CD, environments, and overall delivery capability Tech environment - Not set in Stone Frontend: React, Next.js, TypeScript (or similar) Backend: Node.js (Express, NestJS) or Python (FastAPI, Django) (or similar) APIs: REST, GraphQL (or similar) Databases: PostgreSQL, MongoDB (or similar ...

Experience Strong commercial experience building production-grade software in JavaScript or TypeScript environments Backend development experience with Node.js and modern APIs Frontend experience with React, ideally including Next.js Experience working in a cloud environment such as AWS The ability to think critically about system design, priorities, and trade-offs Comfortable ...

trade lifecycle workflows. Experience building FIX or WebSocket APIs for trading. Options and structured products experience. Our Tech Stack Backend: C#, Python Frontend: React Databases: PostgreSQL, DynamoDB Infrastructure: AWS (EKS, EC2) Version Control & CI/CD: GitHub This role offers an exciting opportunity to build mission-critical trading systems that ...