During March 2025, Thanh Nhan worked on the GameDevelopmentKit/GameFoundation repository, focusing on enhancing the extensibility of the SceneDirector component. By refactoring the signalBus member from private to protected, Thanh Nhan enabled derived classes to safely access and customize signalBus functionality without altering existing behavior or introducing API breakage. This change supports future downstream features and encourages safer subclassing patterns within the Unity game development environment. The work demonstrated a solid understanding of software architecture principles and C# language features, delivering a targeted improvement that balances extensibility with backward compatibility in a production game development context.