I am not clear what your background is..It seems that you are not a "Degree" computer Engineer..But an IT guy with certifications..If my understanding is correct then its a good offer...

If you are working for a fair company which is all the Q companies in Oil and Gas (ONLY THERE)..and major Western Companies then you should fly in..However If you are working for any Govt. Department or Kaharamma or QTEL..do your home-work.( If you worked in Qatar earlier then you will have your contacts...