LA Galaxy Mendez made his professional debut for
USL Championship club
LA Galaxy II in a 1–0 win against
Orange County SC on August 3, 2017, coming on as a 34th-minute substitute for
Andre Ulrich Zanga.
SC Freiburg On October 23, 2018, Mendez announced that he had signed a professional contract for the
Bundesliga club
SC Freiburg in Germany. Mendez scored three goals in 12 appearances in the
U19 Bundesliga.
Ajax On July 30, 2019, Mendez was signed by
Ajax on a three-year deal. He made his official debut playing for the reserves team
Jong Ajax in the Dutch
Eerste Divisie, the 2nd-tier of professional football in the Netherlands, in a match against
N.E.C. which ended in a 3–3 deadlock.
Vizela On July 3, 2021, it was announced that Mendez would transfer to Portuguese club
F.C. Vizela for an undisclosed transfer fee. On August 6, 2021, Mendez made his debut as a starter in the
Primeira Liga season opener in a 3–0 loss at home against
Sporting CP.
Tampa Bay Rowdies In September 2025, Mendez joined the
Tampa Bay Rowdies of the
USL Championship.
El Paso Locomotive On February 26, 2026,
El Paso Locomotive announced they had acquired Mendez via transfer from Tampa Bay Rowdies. ==International career==