Christopher Lentz has worked for 15 years in the field of international justice, where he has gained practical experience in international criminal law and procedure, public international law and diplomacy, and related fields of international law.

He is currently based in The Hague, where he serves as a Legal Advisor in the Register of Damage for Ukraine. Prior to that, he contributed to international tribunals forming part of or otherwise affiliated with the United Nations, namely the International Residual Mechanism for Criminal Tribunals, the International Criminal Tribunal for the former Yugoslavia, the International Criminal Tribunal for Rwanda, and the Special Tribunal for Lebanon. He held a variety of roles in these judicial institutions, including with multiple Offices of the President (2017, 2019–2024), Appeals Chambers (2013–2014), Trial Chambers (2009–2013), Offices of the Registrar (2012, 2014–2017), and an Office of the Prosecutor (2018–2019).

Over the course of his career, Christopher has drawn upon his experiences residing in Chile, the Netherlands, Tanzania, Thailand, and the United States. He holds a Doctor of Law degree from the University of Chicago Law School, where he was a member of both The University of Chicago Law Review and the Chicago Journal of International Law.