Jennifer Wei is the organizational effectiveness officer in the William and Flora Hewlett Foundation's Effective Philanthropy Group. She oversees capacity-building grantmaking that provides support for grantees across the foundation to be high-performing, healthy, and sustainable organizations. She also manages the foundation's pilot fund to help build grantees' capacity for diversity, equity, and inclusion work. Previously, Jennifer was the founding chief operating officer of Techbridge Girls, a nonprofit based in the San Francisco Bay Area dedicated to empowering girls through science, technology, and engineering. Prior to transitioning to the nonprofit sector, she worked in business development at Turner Broadcasting Systems, principal investing at Goldman Sachs, and investment banking at Merrill Lynch. Jennifer holds dual bachelor's degrees in engineering and business from the Management and Technology program at the University of Pennsylvania and an MBA from Stanford Graduate School of Business.