Strong proficiency in at least one native platform: • Swift (iOS) • Kotlin (Android) • Demonstrated experience shipping apps through App Store and/or Google Play release cycles Strong understanding of: • RESTful API integration • JSON parsing and serialization • Secure authentication flows (OAuth 2.0, OIDC, token handling) • Secure storage (Keychain, Keystore, encrypted storage patterns) • Experience implementing modular and scalable architecture patterns (MVVM, Clean Architecture, BLoC, etc.). Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid.