[1][2][3] Lee is the South Korea national team's primary half-middleweight fighter, having represented them at the 2014 and 2015 World Judo Championships.

He was also chosen as the half-middleweight representative in the 2015 World team competition, where he won a silver medal.

[4][5] His main skill is seoi nage, a trademark of the Korea national team.

A soldier of the Republic of Korea Armed Forces, Lee has participated in various military games, and most notably won the gold medal at the 2015 Military World Games in Mungyeong.

[8] Lee became Korea's half-middleweight representative after defeating double world champion Wang Ki-chun as the latter ascended from lightweight.