Stefanie Barnes has joined the St. Louis office of architect-engineer HOK as a marketing professional. She previously was marketing coordinator with Mackey Mitchell Architects, St. Louis.
Paul Gauche has joined the Cleveland office of architect-engineer HDR as a senior instrumentation and control engineer for water-related projects. He previously was engineer of wastewater systems with the city of Detroit and an instrumentation and control engineer with Westin Engineering Inc. He has worked on projects in Detroit, Chicago, Cleveland and Ontario.