Cibois signed his first professional contract with Paris Saint-Germain (PSG) on 28 May 2018, a deal until 30 June 2021.[3] He continued making appearances for the reserve team of PSG during the 2018–19 season. However, on 3 September 2019, Cibois decided to terminate his contract with the Parisian club. This was largely due to the fact that he went further down in the goalkeeper hierarchy with the arrival of Marcin Bułka from Chelsea.[4]
Brest
On 7 January 2020, Cibois signed a two-and-a-half-year contract with Brest.[5] He made his professional debut in a 2–1 Ligue 1 win over Bordeaux on 7 February 2021, over one year later.[6] On 10 February, Cibois made his Coupe de France debut in a 2–1 victory against Rodez.[7] He kept his first clean sheet in a 0–0 draw against Lille four days later.[8]
Rodez
On 4 June 2022, Cibois joined Rodez on a three-year contract.[9]
Le 23 août 2024, pour la 2eme journée de ligue 2, il se distingue en encaissant un but après seulement 8 secondes de jeu, suite à un contrôle du pied tres approximatif juste après une passe en retrait dès le coup d'envoi. Ce but fragiliser a grandement sa place de numéro 1 dans le but du club de Rodez
^Gouaillard, Frédéric (3 September 2019). "PSG : Sébastien Cibois résilie son contrat" [PSG: Sébastien Cibois terminates his contract]. Le Parisien (in French). Retrieved 2 January 2021.