Jeff is the Co-Founder of Summit, best known for hosting global ideas festivals and events, and is the co-owner, principal designer, and developer of Summit Powder Mountain and Powder Mountain ski resort in Eden, Utah. Jeff currently serves on the Leadership Council at Conservation International, and on the boards of Beyond Conflict and Street Soccer USA. He is a Founding Partner of the Drawdown Fund, and a member of the Council on Foreign Relations.

Jeff serves as a Senior Advisor to many for profit, and non-profit organizations, including Inspire Energy, Calm, Scopely, Seed Biosciences, Learn Capital, GivePower Foundation, Arabella Advisors, a leading philanthropy and impact investing consultancy, and Laurel Strategies, a global business advisory and strategy firm. Jeff is on the Leadership Circle of the Conservation Lands Foundation, the Advisory Board of Whistleblower Aid and Save the Waves Foundation, and a Senior Advisor to One Community Films. Jeff was a founding board member of the Summit Institute, the Summit Fellowship, Senior Advisor to TPG Rise and TPG Growth, former Director of the Summit Action Fund, and founding board member of the Anti-Recidivism Coalition. Jeff is the recipient of the Tribeca Disruptive Innovator Award, and is also the co-author of Make No Small Plans, coming out 2021 from the Crown Publishing Group.