Mr. Johnson serves as a Certified Safety Professional, Industrial Engineer, and Human Factors Expert on behalf of Donan. He began his engineering career in 1988 and has worked in the following industries: environmental, health, safety and ergonomic consulting, and construction industries. David has substantial experience with industrial accidents, safety-related projects such as slips, trips and falls, among others. His areas of expertise are human factors engineering as well as industrial engineering/hygiene, among others.

David is a licensed professional engineer in Tennessee and a Certified Safety Professional. He holds a Master of Science degree with a focus in Human Factors Engineering and a Bachelor of Science degree in Industrial Engineering from the University of Tennessee.