He represented Estonia at the 2022 Winter Olympics, and is the first Estonian skater to win a medal at a senior international championship.

[3] Competing on the Junior Grand Prix series, Selevko placed twentieth at the 2015 JGP Latvia.

[3] Competing at the 2016 World Junior Championships in Debrecen, Hungary, Selevko finished eighteenth.

[3] Making his senior international debut, Selevko finished eleventh at the 2016 Golden Bear of Zagreb and eighth at the 2016 Volvo Open Cup.

He then competed on the senior level at the 2017 Cup of Tyrol, finishing fifteenth, before closing his season with a bronze medal at the 2017 Egna Spring Trophy.

[3] Selevko began the season on the 2018–19 Junior Grand Prix series, finishing fifteenth at the 2018 JGP Slovenia.

[3] Although assigned to compete at the 2020 World Championships in Montreal, Quebec, the event was ultimately cancelled due to concerns regarding the COVID-19 pandemic.

[3] At the 2021 World Championships in Stockholm, Sweden, Selevko placed 24th in the short program, 15th in the free skate, and 16th overall.

[3] After winning his third consecutive national title at the 2022 Estonian Championships, Selevko was nominated to represent Estonia at the 2022 Winter Olympics in Beijing, China.

[1] At the Olympics, he dislocated his shoulder in training a couple of days before the short program of the men's event.

[3] Making his debut on the Grand Prix series, Selevko competed at 2022 Skate Canada International, where he finished eighth.

Following the withdrawal of Kazakhstan's Mikhail Shaidorov, Selevko was also called up to compete at the 2022 Grand Prix of Espoo.

[3] Selevko began the season by competing on the 2024–25 ISU Challenger Series, finishing ninth at the 2024 Lombardia Trophy and eighth at the 2024 Trophée Métropole Nice Côte d'Azur.

[9] In December, Selevko competed at the 2024 Golden Spin of Zagreb and the 2025 Estonian Championships, finishing second to his brother, Mihhail, at both events.