I applied for Doha in June or July of 2013. I got a rejection email within MINUTES of the bid closing on the Serco website. I spoke with a management official within Serco at another location and he told me about the restriction on SA and USA folks.
A lot of people, not really here, have been critical of Serco for losing the Doha contract... but I believe that is unfair with the hiring restrictions they were given. I know personally 5 people from the FAA that applied and would have worked at Doha given the chance, including me. Oh well...
I have a good gig now, so maybe things worked out the way they were supposed to...
See ya!