[1] A five time European champion, in 2013 Denysenko won the World Championship in 50 metres freestyle S13, and has appeared in two Paralympic Games [1] Denysenko began swimming competitively in 2013 for Ukraine, winning the world title in his debut season.

He came to international attention when he competed at the 2016 Paralympic Games, winning four silver medals.

The following year Denysenko represented Ukraine again, winning 5 gold and two silver medals at the 2018 World Para Swimming European Championships, dominating the S12 classification.

[2] In recognition of his performance at the 2016 Paralympic Games in Rio de Janeiro, he received the Order for Merits [second grade] in Ukraine.

His wife Kateryna Denysenko [Istomina] has competed in Para swimming, winning gold in the S8 100m butterfly at the 2016 Paralympic Games in Rio de Janeiro.