 The young goalkeeper signed his first professional contract with a Thai Premier League club TTM Phichit (now TTM Chiangmai) in 2002, he spent 2 seasons with the club and won a league title in 2004-2005 season.The former Thailand U23 international joined Osotsapa in 2005 before moving abroad to an Indonesian club, Persib Bandung in 2006.In 2007, Sinthaweechai returned to Thailand, joined his local club Chonburi and won the league title with The Sharks.