Gaetan Lamarca developed infrastructure-ready messaging enhancements for the uclouvain/osis-admission repository, focusing on future-proofing the service’s backend. He centralized RabbitMQ connection logic by introducing the get_pika_connexion_parameters utility, which streamlined configuration and enabled compatibility with upcoming messaging infrastructure changes. Using Python and the pika library, Gaetan refactored connection parameters to improve maintainability while ensuring that the core data flow for admission and signaletique pipelines remained unchanged from the user’s perspective. His work laid the groundwork for seamless future infrastructure migrations, reducing rollout risk and minimizing required changes, and demonstrated depth in backend development, infrastructure, and message queue integration.