Worked on the unoplatform/uno repository over two months, delivering features and stability improvements focused on UI flexibility and memory management. Developed a dynamic ItemsRepeater sample in C# and XAML, enabling variable item heights and multiple data templates for feed-style layouts, which enhanced user experience and reduced future refactoring needs. Addressed memory management for collectible AssemblyLoadContexts by implementing weak references and improving resource cleanup, mitigating memory leaks in multi-app hosting scenarios. Improved layout measurement reliability and performance, particularly for WebAssembly and NativeWinUI targets, by refining exception handling and adding targeted tests, with thorough documentation and validation of fixes throughout the process.