In November 2007 Faivre first took part in FIS races . Only three months later, a second place at the French Giant Slalom Junior Championships followed. From December 2008 he was used in the European Cup . In February 2009 he won the giant slalom at the European Youth Olympic Festival in Szczyrk, Poland . At the end of the 2008/09 season he won his first FIS race.
Faivre's rise continued into the 2009-10 season. At the French junior championships, he won both giant slalom and slalom, plus his first podium in the European Cup. At the end of January 2010 he became the giant slalom junior world champion in Les Houches , which qualified him for the World Cup final in Garmisch-Partenkirchen . On March 12, 2010, he finished 15th in his first ever World Cup race and immediately got his first World Cup points. At the end of the season he became French slalom champion.
At the Junior World Championship in 2011 Faivre won the bronze medal in the giant slalom. In the World Cup he came to a total of four appearances in the 2010/11 season , in which he only achieved a result once as 17th in the super combination of Bansko . In the following World Cup season he was only able to score once in four starts. On February 17, 2012, he won a European Cup race for the first time, the Oberjoch giant slalom . In the 2012/13 season Faivre was able to score for the first time in several World Cup races, with his first top 10 result on December 16, 2012 with tenth place in the giant slalom on the Gran Risa in Alta Badia .
At the beginning of the 2013/14 season, Faivre was finally able to establish himself at the top of the world in the giant slalom discipline. After finishing eighth on October 27, 2013 in Sölden , he finished fourth in Beaver Creek on December 8 . As runner-up in the Naeba giant slalom , he achieved his first World Cup podium on February 13, 2016. The first World Cup victory followed on December 4, 2016 in Val-d'Isère . At the 2017 World Championships in St. Moritz , he won the gold medal in the team competition . The 2016/17 season he finished second in the giant slalom classification behind Marcel Hirscher , one point ahead of his compatriot Alexis Pinturault . In the next season he could no longer build on these successes. At the Olympic Winter Games in Pyeongchang he reached seventh place in the giant slalom and then caused a scandal when he showed a reporter that he “lacked team spirit”. Although Faivre was scheduled for the team competition , the French federation then sent him home for disciplinary reasons.
Faivre was in a relationship with the American ski racer Mikaela Shiffrin until 2019 .