At first, Schneider did an internship at the Hessischer Rundfunk. That is where he first tried doing cabaret.
In 1990, he was given his first stage job. His first programme was Gell, Sie sind spirituell? (You're Spiritual, Aren't You?).
Since 1992, Schneider has appeared in the Quatsch Comedy Club, which was still a theatre in Hamburg at that time. Later, he appeared in several television shows, including RTL Samstag Nacht and had guest appearances in 7 Tage, 7 Köpfe and Genial daneben.
He was a cast member of Comedy Factory (1996/97) on ProSieben.
Schneider is known for his Hessian dialect. "Aschebeschär" ("Aschenbecher" in Standard German, "ashtray" in English) has become a dictum by him. His characteristics are his quite distinctive face and his big mouth. His manager is Heidrun Buchmaier, companion of Bastian Pastewka.
Schneider has released several CDs (Aschebeschär, Sischär Is Sischär!, Raggae Mann, Best of Maddin) as well as the book Im Bett mit Maddin (In Bed with Maddin).