Born in Levittown, New York,[4] Park began playing golf at the age of 7, and later in her youth she worked with instructor Sean Foley.

[3] At the age of 17, Park was the champion of the 2012 Nassau County High School Championship; as one of two women in the 135-player field, she broke the event's scoring record.

[6] After ending 2017 outside the top 120 in season earnings, Park lost full status on the LPGA Tour for 2018, limiting her playing opportunities.

[12] At the LPGA Mediheal Championship in April 2018, she gained a spot in the field in a Monday qualifier and finished in a tie for 18th after being within one stroke of the lead following the second round.

[12] At that event, she posted rounds of 69, 65, and 63, for a 16-under-par total that gave her a one-stroke win over Sakura Yokomine, the first of her career on the LPGA Tour.

[13] Later in the year, at the Buick LPGA Shanghai, Park finished in a tie for second, one stroke behind winner Danielle Kang.

[17] She went 1–2–0 in her three matches as the European team defeated the U.S.[18] Park made the cut in 19 of her 25 events during the 2019 season, and finished in the top 10 three times.

[23] Park played in 24 tournaments during the 2022 season, making the cut in half of them and posting two top-10s, including a tie for fifth at the Palos Verdes Championship.