From 1916-20 he was Chief Draughtsman of Sopwith Aviation Company, then Chief Designer from 1920–1924 of Hawker Engineering Co. Ltd, working on the Heron and Hornbill fighter aircraft, and the Horsley bomber.
From 1916 to 1920, he was the lead draftsman at Sopwith Aviation Company; from 1920 to 1924, he served as the chief designer for Hawker Engineering Co. Ltd., where he worked on fighter aircraft like the Heron and Hornbill, and bombers such as the Horsley.