Christoffer was a PhD visiting student in behavioral science at Princeton University. During his time at the BSPL lab, he focused on researching different dimensions of fiscal citizenship and incorporates, for example, contributions in the field of tax compliance.

After finishing his BA in business administration at Westfälische Wilhelms-Universität Münster, and his MA in finance and accounting at Freie Universität Berlin, including an exchange semester at HEC Paris, Christoffer started his PhD in behavioral science at Freie Universität Berlin.

Since his time at Priceton, Bruns has received his doctorate in Behavioral Economics from Freie Universität Berlin. and also received an M.S.c in Philosophy ad Public Policy from the London School of Economics and Political Science (LSE).  Currently, he works as an interdisciplinary researcher at the Fiscal Citizenship Project.