1. You need right to work
2. If you have #1, you need an EASA commercial license, or more commonly a “frozen ATPL” which means having passed the 14 ATPL exams and getting your commercial license. (Europe does not have the same requirement to have an ATP for the airlines). In Europe, a 200 hour wet-ink commercial pilot can fly an A320 or 737. Heck, I’ve got a friend and the only jet she has flown in her career is an A330.
3. If you want to work in the US, all regionals will take you with the restricted ATP and will remove the restriction once you meet 1500.