Worked on the gui-cs/Terminal.Gui repository, focusing on enhancing UI performance and user experience through targeted C# and Terminal.Gui development. Delivered a redraw optimization that limited GUI updates to mouse hover within highlighted states, reducing unnecessary rendering and improving responsiveness. Addressed a longstanding issue with unintentional redraws on mouse enter and leave, stabilizing hover interactions. In a subsequent update, implemented TableView scrolling and viewport enhancements, introducing smoother scrolling for large datasets, optional scrollbars, and viewport-driven rendering. Collaborated closely with other contributors, maintained clear Git workflows, and improved test reliability, demonstrating strong skills in UI development, performance tuning, and collaborative engineering.