Sean clerked for Judge Guido Calabresi of the Second Circuit Court of Appeals and served as Legal Adviser to Judge O. Thomas Johnson of the Iran-United States Claims Tribunal in The Hague. Sean also advised on international commercial arbitrations and investor-State disputes in which Judge Johnson served on the arbitral tribunal. Early in his career, Sean was a management consultant at McKinsey & Company. Sean earned a J.D. from Yale Law School, an M.A. from New York University, and a B.A. from Columbia University. He is currently licensed to practice law in the State of New York.