Where to find a decent paying overseas job - native Spanish fluent English?

My company had to let go an excellent employee because the customer found out he had a felony conviction 16 years ago that we were unaware of. He has worked for us for five years and steadily/rapidly moved up with no reason to ever believe he had this issue. He now is permanently denied a visa to the US. I personally wish we could keep him but the customer made it clear that that is not an option. I'd like to help him out. Any ideas about where to begin looking? He lives in South America, specialized in Petroleum, Oil Lubricants delivery (supervisor - trained to US Army standards) and vehicle / equipment repair / support. I know this is a long shot but any assistance would be appreciated.