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Core Studio

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 Leadership

As an independent firm, our leaders are employee-shareholders of the firm, with no shareholder holding more than 4% of outstanding shares. We follow a matrix structure, in which our technical staff belong to both a practice and a region. Project teams are assembled to match client requirements, and may draw from across both regions and practices.

Executive Leaders

Gary Panariello
Gary Panariello
Managing Director
GPanariello@thorntontomasetti.com +1.415.365.6900 San Francisco Click to Download CV
Mark Tamaro
Mark Tamaro
Managing Director
MTamaro@thorntontomasetti.com +1.202.580.6348 Washington
Scott Lomax
Scott Lomax
Managing Director
slomax@thorntontomasetti.com +1.917.661.8026 New York

Practice Leaders

Najib Abboud
Najib Abboud
Managing Principal & Applied Science Practice Co-Leader
NAbboud@ThorntonTomasetti.com +1.212.367.3074 New York
Deerkoski, John 1
John Deerkoski
Senior Principal & Transportation Practice Leader
jdeerkoski@thorntontomasetti.com +1.917.416.7430 New York
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
Matthew Farber
Matthew Farber
Senior Principal & Structural Engineering Practice Co-Leader
mfarber@thorntontomasetti.com +1.816.833.6873 Kansas City
Elisabeth Malsch
Elisabeth Malsch
Managing Principal & Forensics Practice Co-Leader
emalsch@thorntontomasetti.com +1.212.367.3076 New York Click to Download CV
mancini
Gary Mancini
Managing Principal & Renewal Practice Leader
gmancini@thorntontomasetti.com +1.917.661.8170 New York Click to Download CV
Matthew Olender
Matthew Olender
Senior Principal & Forensics Practice Co-Leader
MOlender@thorntontomasetti.com +1.954.903.9310 Fort Lauderdale Click to Download CV
van_eepoel
Peggy Phillips
Managing Principal and Protective Design & Security Practice Leader
pphillips@thorntontomasetti.com +1.202.580.6388 Washington
Julie Pietrzak
Julie Pietrzak
Senior Principal & Sustainability and Resilience Practice Leader
jpietrzak@thorntontomasetti.com +1.917.661.7972 New York
Scott Schneider
Scott Schneider
Senior Principal & Structural Engineering Practice Co-Leader
sschneider@thorntontomasetti.com +1.212.367.2882 New York
woelke
Pawel Woelke
Senior Principal, Applied Science Practice Co-Leader and UK & Australia Region Co-Leader
pwoelke@thorntontomasetti.com +1.212.367.2983 New York

Regional Leaders

curtis
Theresa Curtis
Senior Principal & West Region Leader
tcurtis@thorntontomasetti.com +1.415.365.6928 San Francisco
Sergio De Gaetano
Sergio De Gaetano
Managing Principal & UK and Australia Region Co-Leader
sdegaetano@thorntontomasetti.com +44.(0)20.7014.4400 London
Jeff Elliott
Jeffery Elliott
Senior Principal & Mid-Atlantic South Region Leader
JElliott@thorntontomasetti.com +1.972.764.6254 Dallas Click to Download CV
James Feuerborn
James Feuerborn
Managing Principal & New York Metropolitan Region Co-Leader
jfeuerborn@thorntontomasetti.com +1.212.367.2932 New York Click to Download CV
Eli Gottlieb
Eli Gottlieb
Managing Principal & New York Metropolitan Region Co-Leader
egottlieb@thorntontomasetti.com +1.917.661.7840 New York
szycher
Stephen Szycher
Managing Principal & Northeast Region Leader
sszycher@thorntontomasetti.com +1.917.661.7962 New York
Robert Treece
Robert Treece
Managing Principal & Midwest Region Leader
rtreece@thorntontomasetti.com +1.816.412.1838 Kansas City
woelke
Pawel Woelke
Senior Principal, Applied Science Practice Co-Leader and UK & Australia Region Co-Leader
pwoelke@thorntontomasetti.com +1.212.367.2983 New York