In 2008, he finished 4th in all-around at the 2008 European Championships, Kuksenkov missed qualifying in the Ukrainian Team for the 2008 Summer Olympics because of an injury where he underwent surgery and took a while for the recovery.

They were initially awarded 3rd position although a successful appeal from the Japanese team over one of their athletes scores resulted in Japan being promoted from 4th to 2nd place, displacing Ukraine from the medals.

In June 2015, Kuksenkov competed in the 2015 European Games, winning gold in the Team Competition (with teammates David Belyavskiy and Nikita Ignatyev).

[8] He was temporarily suspended from Competition, however On April 13, the World Anti-Doping Agency gave amnesty to athletes with the presence of less than 1 microgram of meldonium in doping samples in tests conducted on athletes before March 1, 2016 is acceptable, WADA cites due to uncertainties and lack of studies for how long meldonium stays in the body.,[9] his suspension was lifted and he was allowed to train with the Russian Team for the 2016 European Championships.

[10] In December 2019, Kuksenkov announced his retirement from competitive gymnastics in an Instagram post, stating that he would start working as a coach for the National Russian team.