Leslie is Chief Marketing Officer, responsible for Twitter’s marketing and communications globally.

Prior to joining the company in 2016, she was Executive Vice President, Global Advertising, Marketing & Digital Partnerships at American Express. Having joined American Express in 2005, Leslie led a global team responsible for creating marketplace demand and driving commerce through differentiated products, marketing, and customer experiences globally. As a member of the company’s global management team, Leslie oversaw advertising, media, sponsorships, content, brand identity, and digital partnerships. Earlier in her career, Leslie led PR and online communications strategies for global brands on the agency side. She earned a B.S. from Boston University’s College of Communications, and is @leslieberland on Twitter. She currently serves on the National Board of Directors at Make A Wish Foundation and Ad Council.