De Beule was born in
Hamme as the son of the cyclist
Étienne De Beule. He signed at
Hamme at the age of 6 and moved to
Lokeren in 1992. Six years later, he entered the first team squad of the club. He played a total of 128 games for Lokeren. In the
2002–03 season, he played a fundamental role in the club's achievement of third place in the national championship, and was named
Belgian Young Professional Footballer of the Year. He stayed at Lokeren until 2004, when he moved to
Gent. With Gent he reached the final of the
2007–08 Belgian Cup, also placing fourth in the national championship in
2006 and
2007. In 2009 he moved to
Kortrijk, where he stayed until 2011. Next, he joined
Roda of the
Eredivisie. In 2014, he moved to
Beerschot Wilrijk, where, in 2017, he ended his professional career as a player. ==International career==