 Kọkọ parí gbólóhùn yìí: : 2007 FIBT World Championships ni St. Moritz, Stepenko pari kẹrin ninu awọn adalu bobsleigh-skeleton egbe iṣẹlẹ ati 13th ninu awọn meji-obirin iṣẹlẹ. Stepenko tun pari 11th ni 2009 FIBT World Championships ni Lake Placid 