Maria Bustamante-Zarate Executive Administrative Assistant Maria Bustamante-Zarate provides executive support in Finance & Grants Administration and Technology for the Ewing Marion Kauffman Foundation. She joined the Kauffman Foundation after 10 years with American Century Investments in Kansas City, Missouri, where she held several roles, including investment team associate, administrative coordinator to several vice presidents, and administrative manager. Previously, Bustamante-Zarate was a manager and administrative assistant at Hunkeler Eye Centers in Kansas City, Missouri.