Florrie Darwin has been teaching negotiation and mediation since 2000, as a Lecturer on Law at the Harvard Law School in the core negotiation workshop, and training mediators through the Harvard Mediation Program. On the faculty of the Harvard Program on Negotiation, she teaches professionals around the world through the PON Global program. She is also an Adjunct Professor of Law at the Georgetown University Law Center and a Senior Fellow at the University of Melbourne Law Masters Program, as well as a Senior Research Associate in the Harvard Labor and Worklife Program.

Florrie teaches negotiation at the Faculty of Law at the University of Freiburg in Germany and has taught in Switzerland at the University of St. Gallen and the University of Lucerne, and in Tokyo at the Sophia University Faculty of Law. She was a Visiting Professor at ESSEC in France, and has also taught at the University of Toronto Faculty of Law, the French Ecole Nationale d’Administration in Strasbourg, and at the Ecole de Management in  Bordeaux. She has trained lawyers and judges in mediation at the Institut Catholique in Paris.

 Florrie has facilitated workshops for professionals at various corporations, including Coca Cola, General Motors, Johnson & Johnson, First Data, Suncor, Health Net, Lux Research and Exelon; for healthcare professionals at institutions including the Massachusetts General Hospital, Harvard Catalyst, Partners Healthcare, and the Dartmouth-Hitchcock Clinics; for real estate professionals at the Harvard Graduate School of Design; and for trade union leaders in the Harvard Trade Union Program. She has also taught in workshops for lawyers around the world, in the Harvard Negotiation Institute, at firms including Clifford Chance, Shearman & Sterling, Steptoe & Johnson, Milbank, Kim & Chang, and Heenan Blaikie, and through organizations including the International Bar Association and the American Academy of Matrimonial Lawyers. 

 She created and facilitated advanced negotiation workshops for the European Commission in Brussels, the U.S. Department of Commerce, the European Central Bank, and the United Nations; trained government and civic leaders in conflict resolution in the Democratic Republic of the Congo; and, through Project Common Bond, provided conflict resolution training to an international group of young people. In Israel/Palestine she trains young Palestinians and Israelis in conflict resolution skills through the organization Seeds of Peace.

 Florrie is former chair of the Cambridge Rent Control Board and of the Cambridge Planning Board. She is a trustee of the Cambridge Affordable Housing Trust, a Massachusetts-certified mediator, and a member of the Harvard Mediation Program Advisory Board. She practiced law with the firm of Hill & Barlow in Boston and has been a mediator in small claims courts. She graduated with honors from Columbia University and the Harvard Law School, where she was an editor of the Harvard Law Review.