Gaetan Lamarca focused on backend infrastructure enhancements for the uclouvain/osis-admission repository, delivering a feature that centralized RabbitMQ connection logic to support upcoming infrastructure migrations. He introduced the get_pika_connexion_parameters utility in Python, refactoring how connection parameters are managed without altering the user-facing data flow in the admission and signaletique pipelines. This approach improved maintainability and positioned the codebase for seamless adaptation to new messaging infrastructure, reducing future migration risks. Gaetan’s work demonstrated proficiency in backend development, message queue integration, and infrastructure readiness, with an emphasis on code quality and utility-driven configuration, though no customer-facing bugs required resolution.