Before joining Protect Democracy, Cerin served as a trial attorney in the Department of Justice Antitrust Division where she investigated mergers and litigated cases enforcing the antitrust laws. Prior to law school she worked as a Senior Legislative Assistant for Senator Barbara Boxer on health care and other issues. Cerin served as a law clerk to Senior Judge Douglas H. Ginsburg on the U.S. Court of Appeals for the District of Columbia Circuit. She received her B.A. in economics and anthropology from Yale University, and her J.D. from the New York University School of Law.