[1] Citroen took an architectural education at the State Normal School in Amsterdam and obtained his degree for teacher MO engineering.

In 1907, he helped with the design of the NIS headquarters and worked as the company's bureau chief.

In 1916, he made the first plans for a new town hall and designed the building for the Darmo Hospital.

He was a member of several committees, such as the construction restrictions commission and the Archaeological Advisory Service.

In his role as an architect, he was commissioned a plan for the renovation of the old society Concordia for British Petroleum Company.