Kot's debut in FIS Ski Jumping World Cup took place in December 2007 in Villach.

Maciej Kot stood on the podium first time in occupations that rank alongside Simon Ammann and Wolfgang Loitzl.

On September 30, 2012 in Hinzenbach again was the winner of the competition Summer Grand Prix, ahead of the second Severin Freund and third Taku Takeuchi.

On March 2, 2013 he won there a bronze medal in team competition with teammates: Kamil Stoch, Dawid Kubacki, Piotr Żyła.

[4] The primary outcome of the competition his team took fourth place, but after re-counting the scores because of Thomas Morgenstern, who noticed a mistake in the points and at the request of the Germans, they finished in third place (Norway was in front of the Polish, but Bardal's jump was badly counted).

At the end of the season he won the title of team and individual Polish champion in ski jumping in Wisła, Poland.

[7] Maciej made his first victory of FIS Ski Jumping World Cup in career on February 11, 2017.

[10][11] On February 19, 2018 Kot and his teammates Stefan Hula, Dawid Kubacki and Kamil Stoch achieved first medal in Olympic team competition for Poland.