Jonathan Bertfield is a Senior Faculty member at Lean Startup Co, the co-founder of Spinnaker Consulting, and an instructor with General Assembly Enterprise. While working with Lean Startup Co Jonathan’s consulting and coaching clients include Mastercard, Merck, LegalZoom, Shell, Microsoft, the National Security Agency, the National Geospatial Intelligence Agency and the UK Government. He has been leading product teams, strategy and change management at large enterprises and startups for over two decades in a career spanning the UK, Israel, Silicon Valley and New York at companies such as Pearson, Scholastic, News Corp, Mattel, Business Insider and Sesame Workshop. Jonathan is the co-author of the upcoming book: The Case for Change—Demystifying Lean Enterprise Transformation. Jonathan has a Bachelors of Law (LLB) from the University of Leeds, UK.