Carl Jules Weyl studied at the École des Beaux-Arts in Paris after architectural training in Berlin, Strasbourg, and Munich.
He was also nominated in the same category for the film Mission to Moscow. He served as a first lieutenant of infantry in the German Reichswehr, according to his World War I draft registration card. Weyl immigrated to the United States on 31 March 1912, according to his 1933 petition for citizenship, on the Steamship Königin Luise (1896).
He worked as an architect in California, first in San Francisco for the architect John Reid, Junior, a designer of the San Francisco Civic Center and many schools.
Weyl moved to Los Angeles in 1923, where he designed the Brown Derby Restaurant #2, the Hollywood Playhouse, the Gaylord Apartments, as well as many other buildings and Hollywood estates. Weyl was best man at the Beverly Hills wedding of film comedian Harry Langdon in 1929.
When the Depression hit and building commissions dried up, Weyl joined Cecil B. DeMille Productions, then Warner Brothers as an art director Weyl initially worked as an assistant to Anton Grot and Robert M. Haas.
His first set for Warner Bros was the fountain in Footlight Parade.
Weyl died in Los Angeles, California. He is interred in Forest Lawn Memorial Park, Glendale.