Podkolzin, 17, finished the season playing for Neva St. Petersburg in Russia's second league, recording five points (2-3-5) in 14 games played. He captained Team Russia to a bronze medal at the 2018 Hlinka Gretzky Cup notching 11 points (8-3-11) in five games, leading the tournament in goals. He also wore the 'C' at the 2019 Under-18 World Championship, posting four points (1-3-4) in seven games to help Russia earn a silver medal.
A native of Moscow, Russia, Podkolzin has also represented his country at the 2019 World Junior Championship (0-3-3 in seven games played), 2018 World Junior A Challenge (3-5-8 in six games played), 2018 Under-18 World Championship (2-2-4 in four games played) and the 2017 World Under-17 Hockey Challenge (1-5-6 in five games played).