Choi made her international debut in May 2015 at the opening stage of the 2015 Archery World Cup in Shanghai, finishing her first competition with a third place in the women's individual event.

[2] Two stage wins followed at the World Cup's second leg in Antalya later that month, Choi defeating compatriots Chang Hye-jin and the highly favoured 2012 double Olympic gold medalist Ki Bo-bae in the stage's semi-finals and final respectively of the women's individual tournament, before combining with Kim Woojin to win the mixed team event.

[5] Ki emerged victorious in what the Yonhap News Agency called a "memorable duel", outscoring Choi ten points to nine in a one-arrow shoot-off after a closely fought match.

Reflecting on her achievement, Choi admitted she was still fatigued after her World Cup appearances earlier in the year but felt the accommodating weather conditions helped her shoot well.

[20] Choi was not selected for Korea's international team in 2018, but was named alongside Chang Hye-jin and Kang Chae-young to contest the 2019 season.