[bena]

Isn't Xamarin the IDE and cross-compiler? Last I saw, it took C# and cross-compiled to native Android and iOS apps.

Or had a .net runtime that ran on both.

Regardless, you need a C# developer if you're choosing Xamarin as your tooling.

[commanderjroc]

We were all C# Developers.

Xamarin is both yes, though it really integrates into Visual Studio so its more of a tool? I am not sure, definitions like that are a bit murky.

[amaccuish]

iOS requires AOT compilation as interpreted/bytecode languages AFAIK are restricted to the Nitro JS engine. With Android it compiles with a .NET runtime included IIRC.

[commanderjroc]

Yes, it uses Mono under the hood as the .NET runtime.