[1] He worked for Foster & Partners for seven years, and joined the Iowa State University faculty in 2000.
[2] Leslie was a 2004 awardee of Association of Collegiate Schools of Architecture's Creative Achievement Award.
[3] He was named to the Pickard Chilton Professorship in Architecture within the Iowa State University College of Design in 2011.
[4] In 2013, Leslie was awarded the Booth Family Rome Prize in Historic Preservation and Conservation.
[5][6] Leslie received the 2015 Educator Award from the Iowa chapter of the American Institute of Architects.