I would like to know who of you actually works as a developer in backend / mobile app work in native languages? (as to say, no js) With work I mean, actually working for a real company.

Ok let me break the ice. On paper i'm senior mobile dev android/ios full native(don't put me to make hybrid app) in reality i'm full stack dev and architect and for the current project in backend i went for a node js php mysql mongo combo. For some tasks i can say that node is doing better then php.