Developed the BPKGraphicPromo sponsor call-to-action feature for the Skyscanner/backpack-ios repository, focusing on DSA compliance and enhanced sponsor integration within the design system. Leveraged Swift and SwiftUI to update the user interface, enabling the display of sponsor information and interactive elements for users. Ensured cross-platform consistency by aligning the iOS implementation with Android, and incorporated accessibility best practices throughout the process. Emphasized robust UI testing by updating and validating UI snapshots, reducing the risk of visual regressions. The work strengthened sponsor engagement capabilities and maintained clear traceability through detailed commits, supporting future partnerships and monetization opportunities within the app.