Kim, raised in Greenacre, New South Wales by Korean-born parents, enjoyed a stellar amateur career and in 2019 reached No.

[2] She is a four-time recipient of the Karrie Webb Scholarship, and won an individual gold medal at the 2018 Youth Olympics in Buenos Aires.

[3] Kim also played for the Australia National Team, and she won bronze at the 2017 Toyota Junior Golf World Cup in Japan.

In 2019, she participated in the Korean National Sports Festival, where she shot a 61, including a 28 on the first 9 holes, to comfortably win the international women's gold.

She won on the first playoff hole, beating Yu Liu and Sung Yu-jin with a birdie after both competitors ended up in bunkers on their second shots.