Portrait of Sarah Miller

Sarah Miller is Chief Executive at Principia. She has twenty years’ experience in global leadership roles in complex international settings, including significant strategy, people leadership and operational management responsibilities. Much of her career and expertise lies in designing and facilitating organizational change processes, focusing on the intersection of culture and conduct, political dynamics and systems and structures. Her areas of expertise include organizational development, strategy and governance, ethical decision making, diversity and inclusion and speak-up culture. Sarah has led much of Principia’s work across these domains since joining the firm in 2020.

Sarah holds an M.S. in International Affairs and has spent most of her career working extensively across the Americas, Asia, Africa, Europe, and the Middle East. She began her career working on immigration, refugee resettlement, mental health and housing and homelessness issues in the United States, and continues to be actively engaged in these issues as a Board member. She is now based in Edinburgh, U.K. with her husband and two daughters.