With over 35 years of experience, Jon has worked on commercial and non-profit projects of all sizes and complexities, including major medical centers, university additions, and manufacturing headquarters. An experienced design engineer, project manager and owner’s representative, Jon has overseen Tonn and Blank’s growth into one of the Midwest’s most vital and sought-after firms spearheading more than $2.5 billion in projects.
With an MBA from the University of Notre Dame and a bachelors in civil engineering from Purdue University, Jon led Tonn and Blank as they won five Project of the Year awards from the Construction Advancement Foundation and twice as Contractor of the Year.

President and CEO
Executive Vice President
Vice President – Central Indiana Region
Vice President – Northeast Indiana Region
Vice President of Real Estate
VP Program Management


Director of Safety
Director of Field Operations
Director of Preconstruction
Director of Program Management
Senior Interiors Program Manager
Sr. Virtual Construction Manager
Senior Program Manager
Director of Program Management
Leasing Manager
Project Architect
Design Associate
Senior Real Estate Manager
Marketing Manager
Controller