[2] He made his professional debut with Young Boys in a 0–0 Swiss Super League tie with Servette on 17 October 2020.
[4] He played in all six of Young Boys UEFA Champions League group stage matches in the 2021–22 season, scoring his first continental goal in a 1–1 draw with Manchester United at Old Trafford.
[5] On 31 August 2023, Rieder joined French side Rennes for a reported fee of €15 million (including add-ons),[6] signing a four-year contract with the club.
[9] At the World Cup, he made his debut in a 1–0 win over Cameroon as a substitute in 81st minute,[10] before making his first start in the next match against Brazil.
[12] He played the final four minutes of the team's opening match at the tournament, appearing as a substitute for Dan Ndoye in a 3–1 win over Hungary in Cologne.