well, im not sure of the salary grade level, but based on my understanding, it depends from institution to intitution. if you are working in a college or uni at qatar foundation, yuo might be working 8-9 hours a day, with no overtime i guess. If you are working for qatar fuondation itself, you work timings may be for 8 hours. But tryst me, the salary they provide you will be very good, and with your level of experience, i guess it would be very baluable to them. So, where to do plan to apply?