Not many useful answers so far. Maybe this helps:
Working time is 38,5 hours per week.
Payment depends on whether you are only coaching in the sim, or also teaching in the classroom. I don't have the exact numbers here, but it is somewhere in the region of 90.000 to 100.000 Euros per year. German income tax at 100.000 per year is somewhere close to 32% plus social insurance fees. Net salary is about 55.000 per year. Pension plans are available.
Nice working atmosphere. Lots of english guys already there.
I hope i could help you, if have any other specific questions go ahead.