In 2015, she won four medals at the Cuban senior national championships and five at the junior level, four of which were gold.[3] In 2017, she won all five possible gold medals at the Cuban national championships.[1]
Mendoza competed at the 2018 Central American and Caribbean Games.[2] She also competed at the 2018 Pan American Championships, where she was 14th in the all-around.[4] The next year, she competed at the 2019 Pan American Games and placed 13th.[5]
In 2022, she placed 18th at the 2022 Pan American Championships.[6]
In 2023, Mendoza spent time training in Russia and competed as a guest at the Russian national championships.[7] Training there gave her the opportunity to compete at the World Cup stages in Tashkent (where she placed 30th in the all-around) and Baku (where she placed 41st).[8][9][10] She returned to compete at the Pan American Championships in June, where she placed 9th,[11] and the Central American and Caribbean Games in July, where she won the bronze medal in the ribbon final and was sixth in the all-around.[8][12] In August, she competed at the CIS Games, where she placed 11th.[13] In November, she competed at the Pan American Games, where she was the only Cuban rhythmic gymnast competing. She finished in 16th place in the all-around qualifications and did not advance to the final.[14]