He has also played for the Edmonton Elks of the CFL and the Panthers Wrocław of the European League of Football (ELF).

Born in Troyes, where he started practicing gridiron football with Pygargues de Troyes when he was sixteen, Rouyer moved to Canada and started playing Canadian football, first, two seasons at the Cégep de Jonquière.

He then played U Sports football from 2015 to 2018, for the McGill Redmen, while also earning a major in Physical Education & Health.

[1][2] During his time as a linebacker for the Redmen, Rouyer played 23 games and recorded 103 total tackles and 4.5 quarterback sacks.

[9] Following the end of the Panthers' 2022 season, Rouyer signed with the BC Lions on September 14, 2022.