I work with many ex-pats who came from Asian/Middle East heavy carriers.
Every one had a great deal of experience before joining such carriers.
To get a job a a contract pilot, you would need to be recently experience in type.
They were all given a two day interview process.
The first day was a full pilot in command type rating check ride.
The second day was a full medical in the morning at a military hospital, and an interview with flight operations in the afternoon.
Only about 30% of applicants are successful.
These companies are not starter jobs for non citizens.
They only want highly experienced people to fill their shortcomings until their people can fill the vacancies.
I suggest you rethink your plan, starting with where you have the legal right to work.
Then go get the pilot licenses for that country, and start working.
The life of an ex-pat contract worker is not a glamorous one.
It may only be suitable to finish a career with.
Only once all other avenues have been exhausted.