[2][3][4][5] Kalasin, a product of Chonburi's academy, started his professional career in a loan move to Banbueng alongside other prospects such as Warakorn Thongbai and Jakkapong Sanmahung in 2020.
[6] In 2021, he was sent on loan to Uthai Thani, where he played under head coach Therdsak Chaiman winning the 2021–22 Thai League 3 with the team.
[7] He was recalled to Chonburi in the second leg of the 2022 season and made his club and Thai League 1 debut in August against BG Pathum coming on as a substitute, helping his team win 1-0.
[8] In January 2023, Kalasin was sent out on loan to Samut Prakan City to compete in Thai League 2.
[9] Kalasin played for Thailand U20 in the 2022 AFF U-19 Youth Championship and the 2023 AFC U-20 Asian Cup qualification.