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Our Leadership Team

Lindsay Weis-Smith
Lindsay Weis-Smith is the President and majority-owner of Weis Design Group (WDG). Mrs. Weis-Smith directs and oversees all project management and business operations, including strategic planning, project management, and financial oversight. She has 16 years of experience working in the engineering industry.  Throughout her youth, Mrs. Weis-Smith worked for the family company assisting with proposals, conferences, and client interactions. She is a member of the St. Charles County Municipal League, St. Louis County Municipal League, and Missouri Parks & Recreation Association.

Tom Weis, P.E. 
Tom Weis is the Vice-President and co-owner of Weis Design Group (WDG). Mr. Weis directs and oversees all design functions within the firm. He has over 35 years of experience in designing roads, sewers, parks and recreation facilities throughout the Bi-State area. Throughout his youth, Mr. Weis worked for the family company as a civil engineer/surveyor. Mr. Weis is a member of the St. Louis County Municipal League, St. Charles County Municipal League and MPRA.

Michael J. Shillito, P.E.
Michael Shillito is Chief Engineer and oversees all civil design within the firm. He has over 30 years of experience in designing roads, sewers, bridges, municipal facilities, parks and recreation facilities throughout the Bi-State area. Mr. Shillito is currently managing grant preparation, project design and construction inspection for the company. Throughout his career, Mr. Shillito has worked as a land surveyor, materials testing agent, design engineer and project manager. Mr. Shillito is a member of the American Society of Civil Engineers and the National Society of Professional Engineers.