Full Stack React Application Developer

We are looking for a highly skilled Full Stack React Application Developer to build production-grade, data-rich web applications, APIs, and interactive dashboards. You will own the full application lifecycle from designing component architectures and building performant React frontends to creating robust backend APIs and integrating with data platforms. This is a hands-on engineering role where you will build applications used by senior leadership, operations teams, and business users. The ideal candidate combines deep React expertise with strong API development skills and enough data fluency to work effectively with data engineering teams. React Frontend Development (Primary Focus) • Architect, build, and maintain complex React applications — dashboards, analytics platforms, internal tools, and customer-facing products • Develop responsive, mobile-first UIs optimized for tablet (iPad) and desktop with pixel-perfect execution • Build rich data visualizations using D3.js, Recharts, Chart.js, or custom SVG/Canvas components • Implement advanced state management patterns using Redux Toolkit, Zustand, React Query, or Context API • Create reusable, well-documented component libraries with design system integration (Tailwind CSS, Styled Components, or CSS Modules) • Optimise frontend performance: code splitting, lazy loading, memoisation, virtual scrolling, bundle analysis • Write comprehensive tests using Jest, React Testing Library, and Cypress for E2E testing • Implement real-time features using WebSockets, Server-Sent Events, or polling strategies API Design & Backend Development • Design and build RESTful APIs using Node.js (Express/Fastify) or Python (FastAPI/Flask) following OpenAPI specifications • Develop GraphQL APIs where appropriate for complex data querying needs • Implement authentication and authorisation (OAuth 2.0, JWT, RBAC) for secure API access • Build middleware for logging, rate limiting, caching, error handling, and request validation • Design database schemas and write efficient queries (PostgreSQL, MongoDB, or similar) • Implement API versioning, pagination, filtering, and search capabilities • Build and maintain microservices or serverless functions (Azure Functions / AWS Lambda) • Create API documentation using Swagger/OpenAPI and maintain developer-facing docs Integration & Data Layer • Integrate frontend applications with data platforms (Databricks, data warehouses, data lakes) through API layers • Build data ingestion endpoints that accept, validate, transform, and store incoming data • Work with data engineers to consume curated datasets and serve them through optimised APIs • Implement caching strategies (Redis, CDN, browser cache) for high-performance data delivery • Connect to third-party services and APIs (payment gateways, CRM, loyalty platforms, analytics tools) AI / LLM Integration • Build conversational AI interfaces (chatbots, knowledge agents) using LLM APIs (OpenAI, Anthropic, Azure OpenAI) • Implement RAG…