Agree with Euro-ATC about the language skills. If you don’t speak the lingo, don’t bother. TWR does all its coordination with the apron office and vehicles in German. Most internal coordination is in German too.
Never heard of anyone in Zurich having had to do a sim check. We certainly never did. The interview itself lasts about 90min after which you usually sit around in the ops room while the other candidates have their turn. And then you end up going to lunch(paid for). They don’t make you an offer on the spot over here, but rather after about a week or two. Unless they learnt to work much faster on the admin side, which I doubt!
All in all though, not a bad company to work for.