The strength of a firm can be measured by the professional performance and personal satisfaction of the people it employs. At Kohler Ronan, we are committed to maintaining a positive, supportive working environment that fosters creativity, innovation and excellence in design and engineering. We encourage independent thought while providing the support of a strong collaborative team and all its members. We continually seek to educate and challenge our staff on each and every project.

The firm is led by five partners, representing over 100 years of combined industry experience, three principals, and several senior associates.

Rory S. Ronan, PE, LEED AP BD+C

Partner

Steven V. Lembo, PE, LEED AP BD+C

Partner

Talya Santillan, PE, LEED AP BD+C

Principal

David J. MacKay, LEED AP, CPMP, BEMP

Senior Associate

Craig F. Razza, PE

Partner

Erik Bodelsen, PE, LEED AP BD+C

Partner

Christopher M. Vahlsing, PE, LEED AP

Principal

John O'Connell, PE, LEED AP

Senior Associate

Joseph Lembo, PE

Partner

Robert V. Hedman, PE, LEED AP BD+C

Principal

Joseph A. Amato

Senior Associate

Edward A. Ruggiero, RCDD, TLT

Senior Associate