Xamarin form cross platform mobile Apps

I am looking to develop a cross platform mobile app using Xamarin forms that requires a user interface and authentication. The mobile app will be built with a SQL database and feature an email authentication system. The app needs to be modern, secure and reliable, so I’m looking for an experienced developer with a proven track record to get the job done to my satisfaction. The design should be highly efficient, intuitive and visually pleasing. My goal is to build a useful product that people can rely on.