Over a two-month period, contributed to Telefonica’s mistica-ios repository by enhancing UI components and improving code reliability. Developed a feature in Swift that enabled left-side image support for buttons, allowing images to appear alongside text and ensuring compatibility with existing right-side icons and chevrons. This update included comprehensive unit tests to validate button behavior across styles and states, while also simplifying the button catalog by removing redundant style combinations. Additionally, addressed a bug in the Callout component by eliminating a hardcoded background color, introducing automated tests, and ensuring consistent rendering across themes, thereby strengthening UI reliability and maintainability.