[2] After her baccalauréat, she joined the centre for promising young athletes in Orléans, where she trained with the likes of Anne-Lise Touya and Léonore Perrus.

[2] In the 2009 World Championships at Antalya, she climbed her first international podium with a team silver medal after France was defeated in the final by Ukraine.

The next season, Berder climbed her first podium in the World Cup with a bronze medal in the Orleans Grand Prix, hosted by her own club.

In the small final, they overcame the United States, weakened by the injury withdrawal of Olympic champion Mariel Zagunis, to earn the bronze medal.

In the 2013–14 season Berder won her first World Cup title in Antalya, defeating reigning Olympic champion Kim Ji-yeon along the way.