This is probably a question that fits better in the ATC section of pprune since we`re pretty much a bunch of pilots and gonnabe`s in the Nordic Forum
. But one would think that it should be possible, since English is the aviation language. But for the correct answer I suggest you contact the respective departement in Sweden
.
BTW, Norway is always short of ATCers, so it might be an idea of contacing Avinor as well.
www.avinor.no Good luck!