Joyeux studied at the Garenne college in Gramat; from 2008 to 2015, she played with the JS Gramat club, 4,[2][3]
Spotted by CA Brive, she competed with Les Vaseix agricultural high school in Limoges, which won the French high school championship.[4]
She then played with the Limoges, then was spotted by the national coaches during an internship at the National Rugby Center in May 2016.[4]
She was selected in 2017 for the under 20 France national team, for a World Cup training course. In 2017, she joined Blagnac SCR.
In November 2018, she was one of the first 24 French rugby union players to sign a half-time federal contract.[5] Her contract is extended for the 2019–20 season.[6]She had her first cap for the French rugby union team on 2 February 2019 against Wales for the first day of the 2019 Women's Six Nations Tournament.[7]
In 2022, she was selected to compete in the Rugby World Cup.[8] She was named in France's squad for the 2023 Women's Six Nations Championship.[9][10]
She was named in the side for the 2025 Women's Six Nations Championship on 7 March.[11]