Gustavo Zanfranceschi worked on stabilizing and optimizing backend infrastructure for the zanfranceschi/rinha-de-backend-2025 repository over a one-month period. He addressed a Redis deployment issue by correcting a configuration typo in the docker-compose.yml file, which resolved startup errors and ensured reliable application connectivity. In addition, Gustavo enhanced system performance and reliability by refining Docker Compose and Nginx configurations, focusing on resource efficiency and backend service stability. His work demonstrated practical application of DevOps principles, leveraging Docker, Nginx, and YAML to deliver measurable improvements in deployment reliability and scalability. The contributions reflect a focused, infrastructure-oriented engineering approach.