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R&D and technology play an essential role in our firm. We invest in constant learning, testing and innovation. That uniquely positions us to solve our clients’ most difficult problems.
Innovation Engine Our CORE groups manage our research and development efforts, from incremental efficiency improvements to solving some of the most challenging engineering problems of our time. Learn More
Innovation Output We believe collaboration amplifies our innovation potential and creates connections that lead to better, more imaginative solutions for our clients. Learn More
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Thornton Tomasetti

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Darren Hartman
Darren Hartman
Managing Principal & Construction Engineering Practice Leader
dhartman@thorntontomasetti.com +1.816.412.1864 Kansas City
Walter Hartnett
Walter Hartnett
Senior Principal & Façade Engineering Practice Leader
whartnett@thorntontomasetti.com +1.917.661.7906 New York
Amy Hattan
Amy Hattan
Corporate Responsibility Officer
ahattan@thorntontomasetti.com +1.207.245.6072 Portland, ME
heinze
Douglas Heinze
Principal & Philadelphia Office Director
dheinze@thorntontomasetti.com +1.267.238.4034 Philadelphia
Melissa Hertel
Melissa Hertel
Vice President
MHertel@ThorntonTomasetti.com +1.206.336.7738 Seattle Click to download CV
Hess, Margie 1
Margie Hess
Vice President
mhess@thorntontomasetti.com +1.915.727.0009 Fort Lauderdale
heward
Gary Heward
Principal & Romsey Office Co-Director
gheward@thorntontomasetti.com +44.(0)1794.528.460 Romsey
Andrew Hill headshot
Andrew Hill
Parking & Mobility Consultant
AHill@ThorntonTomasetti.com +1.207.977.6505 Portland, ME
hong, jeong 1
Jeong Hong
Vice President
jhong@thorntontomasetti.com +1.614.937.1910 New York
howes
Benjamin Howes
Vice President & Director of Application Development
bhowes@thorntontomasetti.com 212.839.5280 New York
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