Mr. Gresty has worked extensively as an advisor on sustainability to executives at leading companies such as Praxair, Schering-Plough, Gillette, PPG Industries, ThermoFisher Scientific, and Brown-Forman.

His other clients include institutions such as The World Bank, New York University, and the California Academy of Sciences, and real estate developers such as TriarcCatalyst, Douglaston Development, F&T Group, Russo Development, and RXR Realty.

As a facilitator, he works directly with management teams and outside stakeholders to develop sustainable solutions. He is also a high performance building design expert, and has worked on numerous LEED projects. He is a frequent speaker on sustainability and related topics at industry conferences and events. Mr. Gresty previously worked on large infrastructure and design projects in the USA and France, and on development of civil engineering design software in South Africa.

Mr. Gresty received his Architecte DPLG from the Ecole d'Architecture de Paris-Belleville. He also holds a Bachelor of Architectural Studies from the University of Cape Town.