Admitted to the bar in Germany, New York and registered in Japan (Gaikokuho-Jimu-Bengoshi). Since 2018 partner in the international arbitration team at Nishimura & Asahi in Tokyo. Experience as counsel for investors and states in investment arbitration proceedings under ICSID and UNCITRAL rules of procedure in Central America, Europe, Central Asia and Asia. PhD on ‘Dispute Settlement Clauses in Investment Protection Treaties’. LL.M. at Georgetown (2006), specialising in investment law and arbitration, followed by one year in the dispute resolution department of Simpson Thacher & Bartlett LLP in New York. Numerous publications and presentations on current topics of investment law. Since 2008 academic advisor to and visiting lecturer at the International Investment Law Centre Cologne at the University of Cologne, since 2024 honorary professor.