mesaieed is more like an industrial zone. Qatar Government try to develop it and move more people to live in there. It started by moving bachelor people who work for QP living down there.

as far as i know they have 1 groceries shop under Shop Rite, 1 thai noodle, some other small shops. And if you do going to work for QP ... the medical centre and dentist in mesaieed are superb. Much better than Doha.

i would say you will still need to get your own car to be mobile.