He won the gold medal in the 79 kg event at the 2022 European Wrestling Championships held in Budapest, Hungary.

In March 2021, Kougioumtsidis competed at the European Qualification Tournament in Budapest, Hungary hoping to qualify for the 2020 Summer Olympics in Tokyo, Japan.

[4] In March 2022, Kougioumtsidis won the gold medal in his event at the European U23 Wrestling Championship held in Plovdiv, Bulgaria.

[5] In that same month, he also won the gold medal in the 79 kg event at the 2022 European Wrestling Championships held in Budapest, Hungary.

[7] Kougioumtsidis lost his bronze medal match in the men's 79 kg event at the 2024 European Wrestling Championships held in Bucharest, Romania.