She won the silver medal in the women's 63 kg event at the 2017 Asian Indoor and Martial Arts Games held in Ashgabat, Turkmenistan.

[1] In 2018, Kassymova competed in the women's freestyle 62 kg event at the Asian Games in Jakarta, Indonesia without winning a medal.

In 2020, Kassymova won the silver medal in the 62 kg event at the Asian Wrestling Championships held in New Delhi, India.

[5] In October 2021, she competed in the 62 kg event at the World Wrestling Championships held in Oslo, Norway.

[7] She competed in the 62 kg event at the 2022 World Wrestling Championships held in Belgrade, Serbia where she was eliminated in her first match.