I am an expert in creating cross-platform iOS/Android applications in Flutter and Native code.
While I have a strong knowledge of basics, such as common design patterns (MVC, Clean code, Switch, Java), programming languages (Dart, Java, Swift, Dart, TypeScript) and standard iOS frameworks (UIKit, MapKit, SpriteKit, Apple Pay etc.), I also have a great experience in wide number of third-party SDKs: Google Firebase, Facebook, PayPl, Stripe, Google Maps, ad networks, Parse Server etc.