Jeff is a Co-Founder and Co-CEO of Mammoth Brands, formerly Harry’s Inc. He is passionate about building brands that positively impact people’s lives. In his role, he supports the company’s portfolio of brands in achieving their full potential.

Before Harry's, Jeff co-founded Warby Parker in 2010. Earlier in his career, Jeff worked at Charlesbank Capital Partners and Bain & Company with co-founder Andy. He holds a BA in International Studies from The Johns Hopkins University, an MA in International Affairs from The Johns Hopkins School of Advanced International Studies, and an MBA from Wharton Business School. Jeff currently serves on the board of directors of Warby Parker.