Hi,
I am Xamarin Certified Developer with 15+ years of experience in software development and 4+ years on mobile.
I have already done apps with many features, including MVVM, Prism, Push Notifications, Local Database (SQLite and Realm), Maps, Scanning Codes like QR, Sync on Azure and others.
I also manage a meetup Group in Rio de Janeiro, Brazil.
If you have any doubts, please contact me.
Best Regards,
Daniel