In 1992, Naudts began his career working for the Belgian national television and press. The following year, he was employed by the Antwerp Fotomuseum, where he remained until 2002. From 2002 to 2006, he became photo editor of the Dutch photo magazine Foto. after that he started his career as a full-time freelance photographer. In 1993, he founded his own photo studio Guarda La Fotografia in Lochristi, where he developed his own poetic style, often referring to the portrait paintings of the Flemish primitives.
In 2000, the National Technical Museum in Prague held a solo exhibition of his work. This show resulted in the development and publication of his first book Auromatic.
His work gets published weekly in several magazines in Belgium: P-Magazine, Knack and Ché.
On the twentieth anniversary of his studio Guarda La Fotografia in 2013 an eponymous book was published, in which photographic portraits of Belgian celebrities, female nudity and humor play an important role.
In 2014 and 2017 in the city center of Ghent, Naudts founded Studio Guarda La Fotografia and Paparazzo, two tourist guesthouses inspired by photography, and wherein some of his photographs are shown.
In 2018 on the occasion of the 25th anniversary of Guarda La Fotografia, Stadsmuseum Lokeren brought a retrospective exhibition of Naudts' photographic work.