Marselle is a program officer in Hewlett’s Effective Philanthropy Group, managing the foundation’s philanthropy sector grantmaking. Most recently, she was a consultant to philanthropic and nonprofit organizations, supporting funder collaboration and building capacity to integrate racial equity into strategy and operations. Prior to that, she was a grantmaker at the S.D. Bechtel, Jr. Foundation, supporting development of the infrastructure California needs to sustainably and equitably manage its water and land, including resilient and interconnected leaders and institutions. She had also worked for the sustainability advocacy organization Ceres and served as a NOAA Sea Grant Fellow in Congress.