1. Founder and President of Core Professional Group for the Brahmaputra; Consulting Engineer and Former Professor of Civil Engineering, Univ. of Alaska, Anchorage, AK.
2. Consulting Hydraulic Engineer, Lago Consulting and Services, Tampa, FL.
3. President, David T. Williams and Associates, Commerce City, CO.
4. Senior Engineer, City of Chesapeake, Dept. of Public Works, Chesapeake, VA.
5. Legacy Professor and Professor Emeritus, Louisiana State Univ., Baton Rouge, LA.