What BtrBill is saying goes back only 6 months.I heard that was the case about ex FAA etc in Doha,as I was approached by Serco management if I would consider going there.
I'm UK CAA ex Nats,ex Hong Kong but over 50.I asked if age was a problem,so my Serco manager would ask the question to Doha.We never got an answer.
I would have looked at it given a chance,but if Doha wants to discard people without even responding to a simple question,then Bon Chance my friends.