Allen L. Sehn received his Ph.D. in civil engineering form Virginia Tech in 1990. He is the Chief Engineer at Keller North American, Inc. He has also served in roles such as Senior Vice President of Engineering at Keller Foundations and Senior Vice President of Engineering at Hayward Baker, Inc. He has also served as an instructor for civil engineering courses at Virginia Tech and Akron University. Sehn serves on the ASCE Soil Improvement Committee and is a member of many professional societies in geotechnical engineering.