I know that some non-chilean are curently flying commercial in Chile but I'm not sure exactly under what terms (regarding the licence). Lan Chile is the major employer for commercial pilots however, the recruitment slowed considerably with respect to previous years. I know for sure that two pilots from Argentina where hired recently by Lan Chile to fly on the B767 freighter. Minimum requirments to join Lan Chile are the commercial licence and something like 300 hours. However, any 0's added to your logbook would increase your chances proportionaly. You need a good english level some luck and that's about it I guess...
I believe that the others companies are not hiring at this time except, maybe, Aerocontinente who operates a 767-200 and some 737's out of SCEL.
Good luck!