From December 2017 Maes started in the European Cup races, but remained without a countable result in the winter of 2017/18. At the 2018 Winter Olympics in Pyeongchang , he finished 32nd in the giant slalom. He was far more successful at the Australian New Zealand Cup 2018 in the summer : with a win and three more podium places, he won the giant slalom classification and took third place overall. As a result, he made a big leap forward in the FIS ranking, so that he had his World Cup debut in the Levi slalom on November 18, 2018 . Three weeks later, on December 8th at the giant slalom in Val-d'Isère , he finished 28th, scoring World Cup points for the first time. At the 2019 Junior World Championships in Val di Fassa , Maes won the bronze medal in both giant slalom and slalom. He achieved his best World Cup result to date on March 9, 2019 with 12th place in the giant slalom in Kranjska Gora .