Role: UI Engineer (Embedded Domain) Type: 6-Month Contract (Inside IR35) Location: London, UK (Remote) Role Overview: Join the team building the C2C Finance Companion, an AI suite assisting finance teams with contract booking, billing, and collections. Embedded in a dedicated squad, you will build user-facing screens in a shared React shell and migrate legacy front ends without downtime. Key Responsibilities Build production-grade domain screens and AI chat interfaces (streaming responses, confirmation flows, error handling). Migrate existing standalone front ends into the centralized shell and decommission legacy versions. Consume and upstream shared UI components using design tokens. Partner with Go engineers to integrate GraphQL queries and real-time subscriptions. Ensure UI quality through automated testing, WCAG 2.1 AA accessibility, and web vitals optimization. Requirements 3-5+ years building production apps with React and TypeScript. Experience with Tailwind CSS, headless UI libraries (Radix UI or shadcn/ui), and Apollo Client (GraphQL). Modern testing and build tooling: Vitest, Testing Library, Playwright, and Vite. Experience with enterprise browser auth via Microsoft Entra ID (MSAL). Nice to Have Front-end consolidation or micro-frontend migrations. AI/conversational UI design. Data-dense dashboards (tables, queues, approval flows). Finance, ERP, or order-to-cash domain exposure.Randstad Technologies is acting as an Employment Business in relation to this vacancy