React Developer

Project Description

The programme is building a resilient, secure, production-grade platform of Python backend services, REST APIs, asynchronous processing components and external integrations, backed by MongoDB. The solution will be delivered through a React/TypeScript operational user interface featuring auditable operations and role-based enterprise user journeys.

Responsibilities

• Own complex operational screens, reusable components and front-end patterns.
• Integrate REST APIs and manage server state, caching, polling and error handling.
• Implement consistent UI using the agreed enterprise design system (Nitro or comparable).
• Manage client state and role-based UI behaviour utilizing Redux Toolkit, Zustand or similar libraries.
• Deliver accessible interfaces aligned to WCAG 2.2 AA principles with hands-on implementation.
• Create component, unit and integration tests for maintainable codebases.
• Optimise performance and troubleshoot complex UI/API behaviour.
• Contribute to design decisions and support Junior engineers in a Lead capacity.

Mandatory Skills

Experience: 10+ years with strong production expertise.

• Strong production SPA development in React and TypeScript (hooks, reusable components).
• Expertise building complex operational UIs: dashboards, tables, status/exception displays for changing data.
• Mastery of REST integration, async handling, caching strategies, polling mechanisms, loading/error states, and correct stale-vs-fresh data presentation with timestamps.
• Ability to translate designs into consistent reusable enterprise components (Nitro or comparable design system).
• State management using Redux Toolkit, Zustand, or equivalent modern tools.
• Hands-on accessible UI delivery adhering strictly to WCAG 2.2 AA standards – not just awareness.
• Rigorous component/unit/integration testing and maintainable code practices.
• Implementation of role-based journeys (authentication/RBAC) for secure enterprise UI behaviour.
• Responsible use of AI coding/testing assistants.
• Independence in owning complex screens, contributing to design decisions and diagnosing intricate UI/API issues.