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John F. Kastner, P.E.

Joins The Sigma Group as a Project Manager

John Kastner has joined The Sigma Group, Inc., Milwaukee, as a Project Manager with more than 15 years of experience in various engineering construction and design roles for private developers, WisDOT, and municipalities. He will manage civil site development projects and continue to grow the construction management and inspection services offered by Sigma.


Education: Kastner is a graduate of the University of Wisconsin – Madison, with a Bachelor Degree in Civil Engineering, and recently graduated from Marquette University, with a Masters of Business Administration.
The Sigma Group, Inc.
1300 West Canal Street

Milwaukee, WI 53233

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