Jon formally built apps at a company called "Hitcents"--some you may even have heard of? The Hanx Writer app was a skeumorphic old-style typewriter for iPad built for the actor, Tom Hanks. Jon also worked on various titles in the "Draw a Stickman" series built with MonoGame or Unity.
Principal Engineer on the Android workload for .NET & .NET MAUI, formerly Xamarin.Android.