Leslie joined Pagaya in 2021 from JPMorgan Chase, where she served as Chief Marketing Officer of the firm, and prior to that was President of Chase's CoBrand Cards Services. She has also held senior executive leadership positions at Bank of America, Citi and MBNA, including leadership roles in Canada and Europe.

Leslie has been recognized as one of American Banker's 2024 Most Influential Women in Fintech, a Top 50 Women Leaders by Women We Admire in 2022, as one of 2022's Top 25 Women Leaders in Financial Technology by The Financial Technology Report, honored as a Woman of the Year 2022 by The Stevie Awards' Women in Business and a Top 25 CMO to Watch by Business Insider in 2020, and received a 2024 Women in Payments Innovation Award.

She serves on the board of directors of Establishment Labs, a Nasdaq-listed women's biotech company, and has served on the board of The Ad Council, MasterCard UK Forum, the Philadelphia International Council of the Arts, The Please Touch Museum and the Delaware Bankers Association. She holds a degree in international relations and Spanish from the University of Delaware, where she was the captain of the Division I Women’s Tennis Team, and also attended the University of Salamanca.