Rousseau’s football career began in high school, where he played for Champagnat Catholic School in Hialeah, Florida. He was a force to be reckoned with on the field, showcasing his extraordinary skills and talent as a defensive end. Rousseau continued to excel in college, playing for the University of Miami Hurricanes. In his sophomore season in 2019, he led the ACC in sacks with an impressive 15.5, earning him first-team All-ACC honors.