In 2016, she was ranked 10th by the World Taekwondo Federation.

[2] Kim won the gold medal in the women's finweight (under 46 kg) class at the 2011 World Taekwondo Championships in Gyeongju, South Korea, as a high schooler.

[3] Two years later she became the finweight world champion for the second time in a row at the 2013 World Taekwondo Championships in Puebla, Mexico, defeating Anastasia Valueva of Russia 8–7 in the final bout.

Three of her final matches were won convincingly through last second attacks and scoring.

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