Tammi Harrison is the vice president of customer experience marketing at Grubhub, the nation’s leading online and mobile food ordering company. In this role, she leads the company’s go-to-market strategy for diner, restaurant and delivery products, as well as the company’s customer experience insights function. Previously, Tammi held leadership positions at American Express and two advertising agencies, Deutsch and Lowe. At American Express, she spearheaded the product marketing efforts for the company’s mobile app products, launched their first mobile payments effort and developed a global brand strategy to improve card usage in key industry verticals. Tammi’s breadth of experience includes brand marketing, customer engagement, product development and product marketing. Tammi received an MBA from New York University’s Stern School of Business, where she was co-president of the Graduate Marketing Association, and a bachelor’s degree in psychology from Binghamton University.