Find out from the country that you want to work in whether they accept FAA and/or EASA licences. If they do then they will issue a national endorsement to that licence allowing you to fly in their country.
In my experience this will cover you for six months, thereafter you have to take and have a national licence. For some countries this is just an air law exam but for most it is an abbreviated full exam including a medical.
In a country where they need commanders, ie China, the exams for ATP are in passable English. I know one who tried to get a Chinese CPL but it was a translation disaster.
Even if you are a native English speaker you may still be required to pass an ICAO Level 4 exam written by somebody who wouldn't pass a Level 1. There have been Englishmen with an Oxford degree in English who have failed that one.
You will need a company that is going to employ you to back you up all the way otherwise you are really wasting your time.