As a founder of PUSH, Glenn leads the landscape design and marketing aspects of the studio with a focus on cultural landscapes and urban design. Smith has established a career in urbanism inspired by the intersection of landscape and architecture. He continually pushes the practice toward a sculptural expression in design form and high experiential quality.

Smith has taught landscape architecture and urban design at The University of Michigan, The City College of New York, Rutgers University, Columbia University, and Florida A&M University. Prior to founding PUSH studio, he chaired the department of landscape architecture at Morgan State University.

Glenn has published articles and book reviews in numerous publications and is founder of the Black Landscape Architects Network (BlackLAN), which is dedicated to increasing the number of Black landscape architects. He holds a Bachelor of Landscape Architecture from Mississippi State University, a Master of Landscape Architecture from The University of Michigan and is a 1997 Loeb Fellow-Harvard Graduate School of Design.