I can help you only with a couple of informations.
They are now looking for rated on ATR42 F/O and Capitan. The main base is Geneve and they are now expanding their destinations, basically between Switzerland and Germany.
To be eligible for this application, minimum hours (for F/O aplication) or languages are not required , I think Italian or German could be a benefit but mandatory it's only the ICAO Level 4 or above and you must have the right to live and work in Switzerland.
I've heard that the selection are made by Etihad but I'm really not sure about this.