Steven G. Mandis is an adjunct professor at Columbia Business School. He teaches classes of MBA and executive MBA students on strategic issues facing investment banks and the European financial crisis. Mandis received his PhD as an honorary Paul F. Lazarsfeld Fellow in the Department of Sociology at Columbia University. He focuses on economic sociology as well as organizational culture and innovation. His book, What Happened to Goldman Sachs: An Insider's Story of Organizational Drift and its Unintended Consequences published by Harvard Business Review Press, is based on work for his PhD dissertation. Currently, he is working on CBS Case Studies and a book about Real Madrid Football Club. He teaches a class at Columbia’s Masters of Sports Management Program about aligning strategy and culture both on and off the field. Mandis worked at Goldman Sachs in the investment banking, private equity, and proprietary trading areas. He assisted Hank Paulson and other senior executives on special projects and was a portfolio manager in one of the largest and most successful proprietary trading areas at Goldman. After leaving Goldman, he cofounded a multibillion-dollar global alternative asset management firm that was a trading and investment banking client of Goldman's. During the financial crisis, Mandis was a senior adviser to McKinsey & Company before becoming chief of staff to the president and COO of Citigroup and serving on executive, management, and risk committees at the firm. Mandis is Chairman and Senior Partner of Kalamata Capital, a provider of on-line small business financing. Mandis holds an AB from The University of Chicago and an MA, MPhil and PhD from Columbia University. He was awarded the Ellis Island Medal of Honor, given to children of immigrants who exemplify a life dedicated to community service. Mandis was a two sport varsity athlete in college and currently competes in triathlons, including having competed in the Ironman World Championships in Kailua-Kona, Hawaii; Ironman 70.3 World Championships in Zell Am See-Kaprun, Austria; and Escape from Alcatraz in San Francisco, California.