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Our Firm

Every day, we apply scientific & engineering principles to solve the world's challenges - starting with yours.

What We Do
World's Tallest Buildings 6 in top 15
Embassies for which we have provided protective design 100+
Navies that rely on our testing and analysis 5

Thornton Tomasetti optimizes the design and performance of structures, materials and systems for projects of every size and level of complexity. We are an independent organization of engineers, scientists, architects and other professionals who collaborate from offices worldwide to help you achieve your goals. We are committed to being a sustainable, diverse and enduring organization and the global driver of change and innovation in our industry.


We tend to grow our own: Most of our top executives have been with the firm for decades and have deep ties with our clients and the professional community. Our leaders are employee-shareholders of the firm and no shareholder holds more than 6% of outstanding shares. To ensure an infusion of diverse experience and fresh thinking, we also hire many mid-career professionals, and seek and cultivate young candidates from across the globe.

Click here to view our executive leadership.

Community Commitment

We believe that making an impact tomorrow means being a leader of change and innovation not just for our company, but for our entire industry and the communities where we live and work.

Our commitment spans a wide range of pro bono and philanthropic work -- from our founding of the ACE Mentor program, to supporting a local food bank, the STEM education of young girls, or sharing our expertise with disadvantaged communities.


To help shape the rules that make our world safer, more effective, and healthier, we play a critical role in working and standards groups in our industry and at the industry-academia-government interface. Some of our main affiliations include: