totallylegal is the best site for international jobs,,,
as far as I know the private international firms are not hiring in Qatar,,,you must decide what yu wan tot do, and perhaps Saudi is the place to start, simply because it is a terrible culture to live in, but you seem to be an arab so perhaps you can adapt easily,,, it does have world class projects,and you can cut your teeth there,,,
It all depends,,,,
Or stay where you are and hang out a shingle like many of us did,,,