Hernandez spent the last two years of his youth career with Real Salt Lake's youth academy in Arizona. On 5 February 2015, it was announced that Hernandez signed a letter of intent to play college soccer at UCLA.[1] On 22 March, he made his professional debut with RSL's USL affiliate club Real Monarchs SLC in a 0–0 draw against LA Galaxy II.[2]
Hernandez was able to maintain his college eligibility despite appearing for Real Monarchs and on August 29, he made his collegiate debut in the Bruins 1–0 victory over New Mexico.[3]
Hernández joined USL Championship side Oakland Roots on January 8, 2021.[8] He left Oakland following their 2022 season.[9] He then signed with Phoenix Rising FC on December 9, 2022.[10]