Hi!
There are 2 Jetstream operators in Argentina, but neither is hiring right now, the market down here is terribly bad.
Also, in order to fly an argentine plane you have to have an Argentine´s license, an ICAO license is not enough, even when Argentina is a member of ICAO. If you are in Europe, I strongly recommend you stay out of Argentina, tons of pilots are leaving, that should tell you how bad things are here.
Best Wishes !!
Strong Winds.