Hi ATCsa!
Right now, LFV is in a pretty bad shape financially speaking and after having lost their monopoly position a couple of years ago, big saving program is running in the company and therefore the amount of vacancies available is very low at the moment. I would recommend you to instead contact the right now only competing, private ANSP in Sweden, ACR. I know by fact that they need controllers at some of their towers (you'll then need a TWR/APP rating).
Good luck!