Dude you should remove the part where it says that candidates are expected to work 9:00 to 21:00. Any rejected candidate can easily sue you in front of a german working court and cite that, and say they got rejected because of willingness to only work during "legal" hours.

12-13 hour days and weekend work for 75k and .3%, what an amazing opportunity!

Better still, cut the hours you make people work in real life and watch your productivity increase!