During September 2025, Baptiste Truchet developed a FileUpload component for the WTTJ/welcome-ui repository, focusing on enhancing the user experience for file submissions. He designed the component using React and TypeScript, implementing drag-and-drop functionality, multi-file selection, and customizable previews to streamline the upload process. The work emphasized clean integration with the existing design system, ensuring the new component could be reused across projects. By aligning the API and UI with established patterns, Baptiste enabled intuitive file handling for end users. The project demonstrated depth in component development and frontend engineering, with attention to scalable architecture and collaborative pull request workflows.