His notable achievements on the field included throwing for 3,000 yards and 37 passing touchdowns, earning him the distinction of being a two-time recipient of the Gwinnett County Player of the Month award.

[4][5] In June 2016, Shim enrolled at Georgia State University, a member of the NCAA Division I Football Bowl Subdivision under head coach, Trent Miles.

[16][17] In August 2019, Shim signed with Saint Mary's University (Halifax), a U Sports competitor, after being heavily recruited by head coach, James Colzie III.

[20][21] He was able to graduate with a Bachelor of Science degree, however, the COVID-19 pandemic disrupted athletic competition, resulting in the cancellation of the NCAA Division II college football season.

[26] In February 2023, Shim signed his first professional contract with the Frisco Fighters of the Indoor Football League, after being scouted by head coach, Billy Back.