After graduating, Juhl worked for ten years at Vilhelm Lauritzen's architectural firm, where he had also apprenticed as a student. In close collaboration with Viggo Boesen, Lauritzen's closest, Juhl was responsible for much of the interior design of the national Danish broadcaster Danmarks Radio's Radio Building, one of the firm's most high-profile assignments during those years.[2] In 1943 he received the C.F. Hansen prize for young architects.