He became the Assistant Curator for the Chicago Museum of Science and Industry, Division of Power, in 1929.
In 1950 Kimbark moved to Brazil to help initiate an electrical engineering program at the Instituto Tecnológico de Aeronáutica São Paulo.
He taught electrical power systems engineering for the next five years, using his own English-language texts but lecturing and administering exams in self-taught Portuguese.
)[1] Kimbark returned to the United States in 1955 for a position at Seattle University as the Dean of the School of Engineering.
In 1962 Kimbark began working for the BPA full-time as the head of the Network Analog Group.