Hi!

3 years if no type. I would fill it out as completely as possible. If they don't like your application, I'm 100% sure they will not interview you.

cliff
NBO

PS-It sounds like you don't agree with their application philosophy. I suggest that you would not like flying for Qatar/living in Doha, so you should not apply. You have to be VERY flexible working and living in a foreign country, ESPECIALLY if you are American. It is not easy.