Over a two-month period, this developer enhanced backend systems across multiple repositories, focusing on maintainability and user experience. In qub-it/fenixedu-academic, they improved error handling for competence course deletion by removing redundant checks and introducing localized feedback in both English and Portuguese, leveraging Java and properties files for internationalization. They also modernized dependency management in qub-it/fenixedu-oss-dependency-management, upgrading core libraries to address security and compatibility. In qub-it/fenixedu-ulisboa-specifications, they streamlined active status management by eliminating unnecessary classes and references, reducing technical debt. Their work emphasized backend development, dependency upgrades, and robust error handling using Java and XML.