During August 2025, Rafael Macedo established the foundational backend infrastructure for the zanfranceschi/rinha-de-backend-2025 repository, focusing on scalable and resilient deployment. He architected a Docker Compose environment featuring two .NET API instances, Redis caching, and HAProxy load balancing to simulate production-like conditions and support future feature development. By delivering reproducible deployment artifacts and ensuring consistent environments across development and staging, Rafael addressed the need for rapid iteration and reliable scaling. His work laid the technical groundwork for handling higher user loads, demonstrating depth in container orchestration, service configuration with YAML and HOCON, and backend systems integration within a short timeframe.