Born in Karagandy, Finonchenko began his career as a left-back before being converted into a forward.

[2] Finonchenko announced his retirement from football, and his appointment as Shakhter Karagandy new assistant manager on 3 February 2017.

[3] Finonchenko made his international debut on 6 June 2003, against Poland, going on to make 20 appearances for his country, scoring five goals in the process, the first of which came against Cyprus on 19 February 2004.

After Uladzimir Zhuravel's contract terminated by mutual consent on 3 July 2018, with Finonchenko was appointed as Caretaker Manager of Shakhter Karagandy.

This biographical article relating to Kazakhstani association football is a stub.