Saito was born in Shizuoka on April 20, 1973. After graduating from Waseda University, he joined his local club Shimizu S-Pulse in 1996. He played as regular player from first season. At 1996 J.League Cup, the club won the champions and he was selected "New Hero awards". End of 1996 season, he was also selected "J.League Rookie of the Year awards". The club also won the 2nd place at 1998 Emperor's Cup and 1999 J1 League, he was also selected Best Eleven in 1999. In 2000s, the club won 1999–2000 Asian Cup Winners' Cup and 2001 Emperor's Cup. In 2006, he moved to J2 League club Shonan Bellmare and played in 2 season. In 2009, he was appointed playing manager of Prefectural Leagues side Fujieda MYFC. After promotion to the Japan Football League in 2011 and acceptance into J3 League for the 2014 season, Saito decided to leave the club.