Since January 2013, President, PIIE. Adviser to central banks, governments and global investors and MNCs on macroeconomic challenges and forecasts. Former Member, Monetary Policy Committee, Bank of England. Member: Council on Foreign Relations; Bellagio Group; CEPR. Author or editor of eight books. CBE, United Kingdom; Order of the Rising Sun, Japan. AB and PhD, Harvard University.

Over his career, Posen has contributed to research and public policy regarding monetary and fiscal policies in the G-20, the challenges of European integration since the adoption of the euro, China-US economic relations, and managing the corrosion of globalization. He was one of the first economists to seriously address the political foundations of central bank independence and to analyze Japan's Great Recession as a failure of macroeconomic policy. While at the Federal Reserve Bank of New York during 1994–97, he coauthored Inflation Targeting: Lessons from the International Experience with Ben Bernanke, Thomas Laubach, and Frederic Mishkin.

Posen has been widely cited and published commentary in leading news and policy publications, including Axios, Financial Times, Foreign Affairs, Foreign Policy, The Guardian, New York Times, Wall Street Journal, Washington Post, Nihon Keizai Shimbun, Asahi Shimbun, Handelsblatt, Die Welt, Chosun Ilbo, and Seoul Economic Daily. He appears frequently on Bloomberg television and radio, among other media programming.