Over a two-month period, contributed to both frontend and data engineering efforts across betagouv/ma-cantine and betagouv/api-engagement. Enhanced user-facing data accessibility by adding a public statistics link to the ma-cantine app footer using JavaScript and Vue.js, improving discoverability of analytics dashboards. On api-engagement, focused on analytics data quality by standardizing candidate age data types from string to integer and correcting SQL column order to ensure accurate reporting and compliance with SQLFluff linting. Demonstrated attention to code discipline, traceability, and data integrity, leveraging SQL and database management skills to support reliable analytics pipelines and transparent user experiences.