Guerriero earned his master's degree in Sport Science at Foro Italico University of Rome.

He has been one of the strength and conditioning coaches for the first World Rugby Americas Combine in Glendale with some of the best athletes from Brazil, Uruguay, Canada, the US, Chile, and Venezuela.

The team won the gold medal in the 2019 Sudamérica Rugby Women's Sevens Olympic Qualifying Tournament and then finished 11th in Tokyo.

[7] In January 2022, Guerriero was signed as strength and conditioning coach for the Japanese team Nagato Blue Angels Rugby Football Club.

In June 2023 the Nagato Blue Angels Rugby Football Club won the Taiyo Seimei Women's Seven Japanese Series.