Mariana contributed to the smartuni/riot-po-2025 repository by developing backend features in Java that enhanced fault detection and improved system modularity. She introduced a gate fault detection mechanism with confidence calculation, adding new methods and status-tracking arrays to increase reliability and traceability. Her work included integrating an external component dependency, ensuring reproducible builds through commit pinning. Mariana also improved usability by implementing a comprehensive constructor for GateEntity, reducing setup errors. Additionally, she updated backend documentation in Markdown, clarifying server structure and onboarding processes. Her disciplined approach emphasized maintainability, object-oriented design, and clear documentation, reflecting solid backend engineering practices.