[1] Despite initial media reports stating that the youngster would play for the reserve side, manager Sérgio Conceição integrated him with the pre-season main squad.
[2] Mouandilmadji made his professional debut for the Primeira Liga title holders on 11 August as an 81st-minute substitute for fellow Coton Sport graduate Vincent Aboubakar, and scored the final goal of a 5–0 home win over Chaves.
[7] After being a free agent for six months, Mouandilmadji signed a two-year contract with Belgian Pro League club Seraing in July 2021.
[9] In August 2019, Mouandilmadji was called up for the first time to the Chad national team, for a 2022 FIFA World Cup qualifier against neighbours Sudan.
[11] On 29 March 2022, Mouandilmadji scored his first goal for Chad, in a 2–2 draw with Gambia in the second leg of the preliminary round of qualification for the 2023 Africa Cup of Nations.