Wuellner acted or directed in several German silent films early in his career, such as The Golden Bullet.

[1] From 1928 onwards he concentrated on production and continued to work through the Weimar, Nazi and Post-war periods.

After this company had to be dissolved in 1937, Wuellner teamed up with fellow producer Hans-Herbert Ulrich and formed a joint production group with him until the beginning of 1938.

Wuellner was subsequently given his own production group and in this capacity supervised films for the Tobis production company from 1939 until the end of the war in 1945, most recently in collaboration with the director Karl Anton.

This article about a Swiss film director is a stub.