The Comm multi IFR isn't too big a problem with the JAR (check EU civil aviation web site for the requirements, but getting an FAA ATPL is a waste of time if you want to convert it; unless you have a bag of large jet command time you will have to write all the exams anyway.

They do have somewhat of a shortage of pilots, experienced pilots, in the EU. Personally, I'd just give the company you want to work for a call.