Dries joined Duval Guillaume as a copywriter in 2007.

He worked for clients like Carlsberg, TNT, AXA, Alfa Romeo, Ray-Ban and De Opvoedingslijn. Later on, his campaigns won numerous national and international awards, including 16 Cannes Lions, New York Festivals Grand Prix, Eurobest, Clio, One Show etc.

In 2012 he has taken the second position inGlobal Copywriters ranking according to Cannes Lions. 

In 2015, he took the creative lead at Duval Guillaume together with his team partner Koenraad Lefever. Staying loyal to its creative roots, Duval Guillaume won 5 Cannes Lions (including 2 Gold) in the last 3 years.

For three years in a row (2011, 2012, 2013) Duval Guillaume has become Agency of the Year according to Creative Club of Belgium.

Dries recently joined the Global Creative Council of Publicis Group.

Has been a jury member at Cannes Lions, Eurobest, Creative Club of Belgium, Ad Black Sea.