After graduating from the Georgianum high school in Vreden Terhechte studied jurisprudence and philosophy at the University of Bielefeld from 1995 to 2000.
From 2003 to 2005 he completed his legal clerkship, inter alia at the Federal Cartel Office in Bonn, the law firm Coudert Brothers LLP US in Brussels and the US Federal Trade Commission in Washington, D.C.
In his dissertation Terhechte studied "The unwritten constituent elements of European competition law."
In 2018 he was appointed Professor of European and International Business Law at the University of Glasgow.
as part of a dual-master program with the School of Law at the University of Glasgow.
This program was supplemented by other partners in later years, such as the University of the West Indies (Jamaica, Barbados, Trinidad and Tobago).
In 2016, he was elected vice president of Leuphana University Lüneburg and was responsible for the following business units: Professional School, Internationalization and Fundraising.
From 2018, he was one of the editors of a leading major commentary on the law of the EU (Groben / Hatje / Schwarze / Terhechte), which was published by Nomos Verlag from 1958.
In 2005 Terhechte was honored for his doctoral thesis with the dissertation prize of the Westphalia-Lippe University Society.