Worked on the SocialGouv/vao repository to address a key issue in the user registration process by reverting a previous change that had removed SIRET validation. Using JavaScript and leveraging backend development and database management skills, restored SIRET as an optional field, ensuring that user activation no longer requires mandatory SIRET input. This targeted bug fix involved a precise code revert and thorough validation through smoke testing, resulting in a smoother signup experience. The update reduced onboarding friction while maintaining compliance flexibility for future regulatory needs, demonstrating careful attention to both technical implementation and the broader business impact of the registration flow.