Dr Casas is an Associate Professor of Politics, Technology, and Computational Social Science at the Department of Politics and International Relations and the Oxford Internet Institute, and a Governing Body Fellow at Reuben College. He is a UKRI Future Leaders Fellow and Director of the Oxford Social Media Observatory. He received his PhD in Political Science from the University of Washington.

Noah specialises in experimental and behavioural economics with a focus on the importance of identity in forming behaviour. He uses experimental methods to study how these behavioural differences manifest and contribute to disparity in economic outcomes across social groups.