Worked on the asuc-octo/berkeley-mobile-ios repository to enhance the reliability of location-based features by addressing a critical bug in the location data pipeline. Focused on improving data integrity, the developer replaced direct NaN comparisons with the isNaN method in Swift, ensuring more robust handling of edge cases that previously led to erroneous location readings. This targeted fix improved the stability of MapKit-powered components within the iOS application. The work demonstrated careful root-cause analysis, precise implementation, and strong traceability through clear commit documentation and issue linkage, reflecting a methodical approach to maintaining code quality and user experience in mobile development.