Aurélien Merel focused on stabilizing database schema management for the etalab/admin_api_entreprise repository over a two-month period, addressing critical issues in access_logs table migrations. Working primarily with Ruby, he implemented idempotent schema changes by using conditional table creation and disabling the default id column, ensuring that repeated migrations would not cause errors or unintended modifications. His work emphasized deployment safety and data integrity, reducing operational risk and supporting reliable analytics and auditing. Although no new user-facing features were delivered, Aurélien’s contributions provided depth in backend reliability, demonstrating careful attention to repeatable deployments and robust database governance practices.