Worked on stabilizing and enhancing user experience in the fossasia/magic-epaper-app and ArduPilot/MethodicConfigurator repositories, focusing on both frontend and backend improvements. Addressed UI lifecycle management by making dialogs stateful and ensuring proper disposal of controllers in Dart and Flutter, which reduced memory leaks and crashes. Improved image handling by adding error states and fixing PNG saving logic, while updating deprecated framework methods for compatibility. In Python, resolved edge cases in configuration validation and maintained data immutability during sorting. Emphasized asynchronous programming, state management, and software quality assurance, resulting in more robust, maintainable, and user-friendly mobile and backend applications.