After an amateur career which consisted of 217 wins from 238 fights, Rabchenko made his professional debut in September 2006 with a first round knock-out victory over Andrei Matveeu in Minsk. Since 2011 he has been based in the United Kingdom, where he is promoted by Hatton Promotions and is trained by Ricky Hatton. After a second round knock-out over Martin Concepcion in his first fight in the UK he competed in his first twelve-round fight, beating Bradley Pryce by a unanimous decision. In June 2012 he won his first significant title when he beat Ryan Rhodes in the seventh round via a body shot to win the EBU light-middleweight belt. He made the first defence of his title against Cedric Vitu at the Manchester Arena in November 2012 where he won by split-decision.
Rabchenko recorded his first professional loss against Australian Anthony Mundine.