Marcos Adantas focused on backend repository hygiene and deployment reliability, primarily within zanfranceschi/rinha-de-backend-2025. He removed outdated log and result artifacts, streamlining file management and reducing repository clutter. By updating docker-compose.yaml configurations, Marcos ensured deployments reflected current dependencies, improving traceability and operational stability. His work leveraged Rust and Docker, emphasizing containerization and DevOps best practices. In the wasmerio/pingora repository, he addressed a server log duplication bug, enhancing operational visibility and simplifying troubleshooting. The depth of his contributions is evident in the comprehensive cleanup and targeted bug fix, which together fostered a more maintainable and efficient backend environment.