Position: Xamarin Lead
Category: .NET
English level: upper
Years of experience: 6

Bindings and adopting native libraries, making apps that have 10k customers monthly on Xamarin. Also back in the days I had apps that were top 5 in WP App store when I was working heavily on my pet projects and had more than 500k installs on them at total.
I've been working as a Mobile developer on .NET (Xamarin) for the last 7 years, starting with Windows Mobile and then switching to Windows Phone development in Infopulse(there were projects to support iOS, Android, and WP at that time), and then switched to Xamarin.iOS/ Xamarin.Android development when WP becomes obsolete.
I've been working on Xamarin.Forms and Xamarin.Native. I prefer Xamarin native and MvvmCross stack, to support native controls without adding a layer of abstraction for Forms, but now I consider MAUI also.
I was working in a team(10-15 people) at first, then as a lead in smaller teams, single consulting developer. 
I want to work as lead, deciding on architecture and libraries to use for mobile apps and be involved in the API specification process, but also I am happy to code screens and controls.