Professor Sitaraman teaches and writes about constitutional law, regulation, economic policy, and democracy. He is the author of The Great Democracy: How to Fix Our Politics, Unrig the Economy, and Unite America (2019), The Public Option (2019) (with Anne Alstott), The Crisis of the Middle-Class Constitution: Why Economic Inequality Threatens Our Republic (2017), which was one of The New York Times’ 100 notable books of 2017, and The Counterinsurgent's Constitution: Law in the Age of Small Wars (2012), which won the 2013 Palmer Civil Liberties Prize.

Professor Sitaraman is a public member of the Administrative Conference of the United States, and was a longtime advisor to Elizabeth Warren, including serving as a senior advisor on her 2020 presidential campaign, her senior counsel in the Senate, and her policy director during her 2012 Senate campaign. His work with Dan Epps on reforms to the Supreme Court is considered one of the leading accounts on the topic. He has been profiled in The New York Times and Politico for his work at the nexus of politics and ideas.

An Eagle Scout and a Truman Scholar, he earned his A.B. in government magna cum laude from Harvard College, a master’s degree in political thought from Emmanuel College, Cambridge, where he was the Lionel de Jersey Harvard Scholar, and his J.D. magna cum laude from Harvard Law School, where he was an editor of the Harvard Law Review.