I am a Departmental Lecturer in International Relations and an Associate Member at St Antony’s College. My research examines how access to finance shapes politics, across the field of political economy. I study this through two lines of work: how citizens navigate economic security amid growing financial exposure, through pensions, housing, and government transfers, and how governments and firms navigate global capital markets to pursue political goals, from sovereign green bonds to restrictions on foreign investment.

I am a Departmental Lecturer in International Relations in the Department of Politics and International Relations (DPIR) and at Somerville College. Prior to joining DPIR in 2026, I was an LSE Postdoctoral Fellow in the Department of International Relations at the London School of Economics and Political Science (LSE). I received my PhD in International Relations from Queen Mary, University of London in 2023.

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.