Stephen Kaufer, president and CEO

Prior to co-founding TripAdvisor, Kaufer was president of CDS, Inc., a successful independent software vendor specializing in programming and testing tools. Previously, Kaufer was co-founder and vice president of engineering of CenterLine Software, where he led the development of several award-winning programming environments that fueled the company's growth to more than $20 million in revenue. Kaufer, winner of the 2005 Ernst & Young Entrepreneur of the Year Award, holds several software patents and has spoken at dozens of travel and high-tech conferences worldwide. He is a board member of the Caring For Carcinoid Foundation (http://www.caringforcarcinoid.org) a non-profit charity dedicated to finding a cure for Carcinoid and Neuroendocrine cancers. He has a B.S. in computer science from Harvard University.

Marc Charron, managing director, Europe

Marc Charron is responsible for leading TripAdvisor's rollout of local language sites and managing operations across Europe. Prior to joining TripAdvisor, Charron served as vice president of product marketing at SquareTrade, Inc. in San Francisco. Before SquareTrade, Charron served as managing director of QXL.com, Getz International Travel and Danube Travel, all based in London. Charron began his travel career in 1991 with Carlson Travel in Vienna. He received a bachelor's degree from Trinity University in Texas and spent a year abroad studying at the London School of Economics.

Robin Ingle, senior vice president, advertising sales

Robin Ingle is responsible for all graphical and cost-per-click advertising sales as well as ad operations for TripAdvisor. She joined TripAdvisor in 2001 and most recently led international development. Prior to that, Ingle handled all client relations for the company. Before joining TripAdvisor, Ingle served as vice president of advertising at Access Media, vice president of sales for MediaPassage, and director of display advertising at the Chicago Sun-Times.

Christine Petersen, senior vice president, marketing

Prior to joining TripAdvisor, Petersen was with Travelocity (formerly Preview Travel, Inc.), where she served as vice president of member services, and customer marketing since 1999. Petersen was responsible for the development, implementation and management of customer marketing strategies for the company, including "Travelocity Preferred," a premium membership program, and the development of additional services that enhanced overall Travelocity membership. Prior to Travelocity, Petersen held various senior level marketing positions at Charles Schwab & Co, American Express, and Fidelity Corporation. She holds an M.B.A from Columbia University and a bachelor's degree from Colby College.

Eric Rosenzweig, senior vice president, strategic development and sales

Before joining TripAdvisor, Rosenzweig spent two years as executive vice president at SideStep and prior to that he was at Travelocity for two-and-a-half years, most recently as vice president of business and corporate development. Before Travelocity, Rosenzweig was with Preview Travel. Rosenzweig earned M.B.A. and J.D. degrees from the University of California, Berkeley and a bachelor of arts degree from Harvard University.

Tyler Young, vice president, finance and administration

Prior to joining TripAdvisor in 2004 as the company’s controller, Young spent seven years in public accounting with Deloitte & Touche, most recently as audit manager. He is a certified public accountant and won the South Carolina Golden Quill award in 1999 for passing the CPA exam with the highest score in the state. Young holds a B.A. in government and economics from Dartmouth College and continued his accounting education at the University of California, Berkeley and the University of South Carolina.