He won Gold Medal in the Men's Individual -84 Kg Kumite XXIV Juegos Centroamericanos y del Caribe San Salvador 2023.

At the 2019 Pan American Games held in Lima, Peru, he won one of the bronze medals in the men's kumite 84 kg event.

[1][2] At the 2018 Pan American Karate Championships, he won one of the bronze medals in the men's kumite 84 kg event.

[4] In November 2021, he competed in the men's 84 kg event at the World Karate Championships held in Dubai, United Arab Emirates.

Valera won one of the bronze medals in his event at the 2022 South American Games held in Asunción, Paraguay.