Rapkat B.

Senior Mobile Flutter Developer with 6 years of experience in cross-platform mobile development for iOS, Android, and Web. Proficient in Flutter, Dart, RESTful APIs, and WebSockets. Delivered 5 apps from architecture design to production, reaching 10,000–100,000 users on the App Store and Google Play. Achieved 70%+ test coverage using flutter_test for widget/unit tests and integration_test for E2E testing. 3 years of native iOS development experience in Swift, building custom bridges and plugins for deep platform integration and performance optimization. Experience developing projects serving an audience of 100,000 users across HealthTech, FinTech, Crypto, and real-time data systems in the US and CIS. Mentored 8 junior developers into mid-level roles, led team of 3, and collaborated with cross-functional product teams of 13.