Ilias Bettahi contributed to the dust-tt/dust repository by developing targeted features focused on data quality and workflow reliability. He standardized user profile titles to remove redundancy, improving data consistency and supporting clearer analytics and user interfaces. In a separate feature, he implemented draft lifecycle management, enabling users to list and delete conversation drafts with version control and optimistic concurrency handling. This work involved both front-end and API development using React and TypeScript, ensuring robust integration between client and server. Over two months, Ilias delivered well-scoped, maintainable solutions that addressed specific product needs, demonstrating depth in both technical execution and collaborative practices.