Serial entrepreneur. Cofounder/COO/CTO at Sittercity. Director of Development at Obama for America. Social enterprise investor.Serial entrepreneur, author, engineer, and life tourist. He has started companies in IT consulting, telecoms, and online automotive sales. Dan founded and operated Sittercity, the nation's first and largest site for matching parents and babysitters, petsitters, elder care, tutors, and housesitters, and still serves on the board. More recently he served as Director of Development at Obama for America.

Specialties: Startup entrepreneurship, management and operations; technology and e-commerce; nanotechnology; Chicago tour guide; and public policy.