maybe try and get back your old gig in Fiat OP, then ask for a transfer?
That would be the smart approach, either with Fiat or some other company. Especially if he could keep his western rate of pay.
the OP doesn't have to do sales though.
That is likely what he would end up doing if he came here to Poland and got the job here. Entry-level sales positions are very poorly paid, and it's not very rewarding work, especially if it's cold-call sales in a call center.