[5] An was also a part of South Korea’s gold medal winning teams at the 2022 Uber Cup and at the 2022 Asian Games.

[8] An later represented her country at the 2018 Uber Cup in Bangkok and Asian Games in Jakarta, helping the team win a bronze medal in the former event.

[9][10] In 2019, she clinched her first BWF World Tour title at the Super 300 New Zealand Open, beating the 2012 Olympic gold medalist Li Xuerui in the final.

[11] An Se-young entered her first international competition when she was only 13 years old, participating in the 2015 Asian Junior Championships where she finished as quarter-finalist in the U15 girls' singles and doubles.

[16] An Se-young won her maiden World Tour title at the 2019 New Zealand Open, beating the 2012 Olympic gold medalist Li Xuerui of China in the final.

[20] The continuously improving performance she displayed in 2019 brought her into the women's singles top 10 in the BWF world rankings.

[25] An then made her first final in a Super 1000 tournament, the Denmark Open, but she was unable to finish the match, and had to settle for runner-up to Akane Yamaguchi.

In the BWF World Tour, she claimed eight titles out of ten finals,[37] and topped the women's singles ranking on 1 August 2023.