Prof. Henseler began his training as a senior civil servant at the Rhineland-Palatinate tax authorities after his Abitur (higher school leaving certificate). After graduating as Diplom-Finanzwirt (graduate degree in financial studies), he studied law at the Johannes Gutenberg University in Mainz. Following his legal clerkship in Rhineland-Palatinate (focus on tax law with positions at the Neustadt an der Weinstraße Finance Court and a law firm for tax law and criminal tax law), he was called to the bar and has since worked as a criminal defence lawyer.
During his time as a research assistant at the Johannes Gutenberg-University Mainz (chair Prof. Erb and chair Prof. Zopfs) he wrote his dissertation (“§ 142 IV - Is active repentance of the legislator necessary?”). The dissertation was awarded the Johannes Gutenberg University prize.
After completing his doctorate, Prof. Henseler worked as a criminal defence lawyer and was a lecturer at the EBS Universität für Wirtschaft und Recht, the Hessian University for Police and Public Administration and the Johannes Gutenberg Universität in Mainz. There he took over a position as a teacher for special tasks. Prof. Henseler has been teaching and researching at EBS Universität since autumn 2017.