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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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Our People

Collaboration is the cornerstone of our success. Our people are its foundation.
Thornton Tomasetti

Thornton Tomasetti

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Michelin, Rachel 1
Rachel Michelin
Senior Principal & Chicago Office Co-Director
rmichelin@thorntontomasetti.com +1.312.596.2102 Chicago Click to download CV
Randall Rehfuss headshot
Randall Rehfuss
Associate Acoustic Consultant
RRehfuss@ThorntonTomasetti.com +1.213.330.7968 Los Angeles
daddazio
Raymond Daddazio
Chairman, Thornton Tomasetti Foundation
rdaddazio@thorntontomasetti.com +1.917.661.7800 New York
Rhys Centin
Rhys Centin
Project Engineer
rcentin@thorntontomasetti.com +61.3.9724.3705 Melbourne
Ricardo Medina
Ricardo Medina
Vice President
rmedina@thorntontomasetti.com +1.781.296.1598 Boston Click to download CV
richard_tomasetti
Richard Tomasetti
Consultant & Founding Principal, Chairman Emeritus, Thornton Tomasetti Foundation
RLT@ThorntonTomasetti.com +1.917.661.7820 New York
otani
Robert Otani
Managing Principal & Chief Technology Officer
rotani@thorntontomasetti.com +1.917.661.7818 New York
Robert Treece
Robert Treece
Managing Principal & Midwest Region Leader
rtreece@thorntontomasetti.com +1.816.412.1838 Kansas City
Weld, Roger 1
Roger Weld
Vice President
rweld@thorntontomasetti.com +1.917.661.8285 New York
Ross Cussen
Ross Cussen
Principal
rcussen@thorntontomasetti.com +1.213.330.3973 Los Angeles Click to download CV
kaur
Ruchika Kaur
Principal
rkaur@thorntontomasetti.com +1.415.365.6961 San Francisco Click to download CV
patel
Rupa Patel
Principal
rpatel@thorntontomasetti.com +1.202.580.6384 Washington Click to download CV
Ryan Daley headshot
Ryan Daley
Senior Associate
RDaley@ThorntonTomasetti.com +1.212.367.2881 New York
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