Career
Club career
Khizhnichenko began his career in 2006 with Football Club Vostok and in January 2008 he was promoted to the senior team In November 2010 and January 2011, Sergei was on trial at Feyenoord. In December 2014, Khizhnichenko signed a two-year contract with Football Club Aktobe.
International career
He scored twice.
Just over a month later, also in a qualifier, Sergei scored again. He scored the equaliser against Croatia only for his side to lose the lead and lose the match also.
In August 2013, he scored his first goal in almost three years for the national team Against Georgia in a pre-season friendly he scored the only goal of the match as Kazakhstan recorded a rare victory.