you need permission to come to Qatar, a sponsor. You need his permission to leave, change jobs, buy a car or a house, take a loan. Be very sure about the sponsor. There are many people here who are not paid promptly, and others who cannot change jobs because of the sponsor's policies. OK working for an international company, you have some place outside Qatar to kick up a fuss if needed. By and large the majority of us don't have problems here, I've been here twelve years and cannot complain too much, but it did take me 9 months to change jobs last time as the sponsor delayed giving permission.

as a single western woman you will be asked all sorts of personal questions and can get some unwelcome attention but in general life is safer here than other places. You will appreciate the good aspects of the lifestyle when you come.