You will need to get a Canadian Licence which will should NOT be a big problem for you.
Canadian Helicopters has Air Ambulance contracts in Ottawa and Toronto among other places on Ontario. SK-76s.
Everybody starts off as a co-pilot so prepare for a shock.
Try the forums at Verticalmag
http://www.verticalmag.com
or the rotorheads section here at pprune.
Best of luck.