Worked on the symfony/symfony repository, focusing on backend development with PHP and Symfony. Delivered a feature that enhanced the TypeInfo component by introducing ObjectShapeType, enabling precise representation and validation of anonymous object shapes. Updated the StringTypeResolver to parse object shapes, which improved type safety and API contract enforcement. Also addressed a critical bug in Dependency Injection by modifying error handling so that missing classes or interfaces during service registration now trigger deprecation warnings instead of fatal errors. This approach reduced production risk, improved developer feedback during upgrades, and demonstrated careful attention to maintainability and robust error management through unit testing.