After Muangthong's promotion to the Thai Premier League for the 2009–2010 season, Kawin led the team to win the top division title two years in a row, 2009 and 2010.

After returning to the pitch in the second leg of the Thai Premier League, he dislocated his shoulder and tore ligaments in a match against TOT S.C., ending his season.

[10] Kawin, who wore the number 16 jersey, quickly became Leuven's first-choice goalkeeper, a position previously held by Nick Gillekens.

After an outstanding performance in a 1-1 draw against Beerschot Wilrijk, Kawin was named in the Proximus League's Matchday 27 team of the week along with teammate Jarno Libert.

[11] In October 2018, Kawin suffered a foot injury which has kept him on the sidelines for months, allowing Laurent Henkinet to take up the position as first-choice goalkeeper.

On 11 April 2021, in the penultimate game of the season against Cercle Brugge, Kawin was brought on as a replacement for an injured Romo at half-time, becoming the first Thai to play in the Belgian league.

During the 2021 summer transfer window, OH Leuven loaned Rúnar Alex Rúnarsson, demoting Kawin back to third-choice.

However, due to an injury, he sustained in October while playing for OH Leuven, Kawin was forced to withdraw just 2 weeks prior to the tournament.

[24] Kawin is good friends with former national team captain Panupong Wongsa and his idols are Oliver Kahn[25] and Sinthaweechai Hathairattanakool.