ExPat-Pilots
There are not too many Companies, better said it is rare, that ExPat Pilots are seen as a equal employee and get the same treatment then locals.
Look in the Orient and you are there to fill a seat, do a job, get paid and as long as there is a National Pilot F/O the Expat F/O will not move to the left seat, regardless that he has more hours, more years and more of anything else. National pride could be hurt. As soon as those Nationals go abroad they demand the same and equal treatment and if they do not get it they call the hosts racists, maybe a look into the mirror would help first.
As long as you will not get in in bold letter writing, that you will get a position in the seniority list, stay away if your goal is a Command Position by joining THY, or any similar outfit anywhere else. If you are out of a Job and look for a source to generate some income then you can go that track for a while but remember You are the ExPat - F/O. Same for Cpt, your Job is to do the Job.
You are there because no other national Pilot is at the moment available to do the job. Be aware as soon as there is any your job is on the line..... You can sue them whereever you want and get nowhere except back home and have to start allover again.
Sorry if that sounds negative but that is what I have seen there and somewhere else in the West and the East when it comes to upgrade non national Pilots.