On December 10, 2017, Noël finished 20th in the slalom from Val-d'Isère, winning his first World Cup points. Three days later he was on the podium in a European Cup race for the first time in Obereggen . At the beginning of 2018 he was already at the top of the world, on January 21 with 8th place in Wengen and two days later with 6th place in Schladming . At the beginning of February, he won the gold medal at the 2018 Junior World Championship in Davos with a lead of over two and a half seconds. Two weeks later, at the 2018 Winter Olympics in Pyeongchang , he was fourth in the slalom and missed another medal by just four hundredths of a second.
At the beginning of the 2018/19 World Cup season, Noël finished in fourth place twice. On January 13, 2019, he achieved his first podium finish in a World Cup race with second place in the Adelboden slalom . A week later, on January 20, 2019, he celebrated his first World Cup victory at the Lauberhorn Slalom in Wengen . After another six days, he also won the slalom on the Ganslernhang in Kitzbühel . He finished the slalom at the 2019 World Championships in Åre in seventh place. At the end of the season, he won the Soldeu slalom , which put him in second place in the discipline classification. In the following World Cup winter 2019/20 , Noël also took second place in the discipline classification, although in the end he was only two points behind Henrik Kristoffersen . He won in Zagreb , Wengen and Chamonix ; there were three more podium places.