Julien Marquis

Attorney at Law, Dr. iur., lecturer at the Geneva Police Academy

Ph.D. in Law (summa cum laude, winner of the Bellot award), University of Geneva

Certificate of Advanced Studies in Legal Professions, University of Geneva

Master in Public Law, University of Geneva

Bachelor of Laws, Universities of Geneva and Bern

French - German - English


Dr. Julien Marquis obtained a Ph.D. in Law in 2016 (summa cum laude), after his studies in Geneva and Bern. He worked as a research and teaching assistant at the Public Law Departement of the University of Geneva until 2015.

In parallel to his studies and academic activities, Julien Marquis had an experience as an intern at the Parliamentary Services of the Swiss Parliament in Bern and worked as the assistant of a group of deputies from the Grand Council, the Parliament of Geneva. In 2012-2013, he also went on to serve as an intern and for a short mission at the European Court of Human Rights in Strasbourg.

Julien Marquis joined the firm in March 2016 as a trainee lawyer under the direction of Me Lionel Halpérin and Me Anouchka Halpérin. He was admitted to the Geneva Bar in October 2017 and joined the firm as an associate in February 2018. As of 1 January 2021, he is practicing as a counsel.

Practice areas

Julien Marquis provides legal advice and acts as a litigation lawyer in various areas, notably in the areas of criminal law (criminal law in general and international mutual legal assistance in criminal matters) and public law (e.g. human rights law, constitutional law, administrative law), as well as in the field of civil litigation (e.g. contract law, family law).

Professional affiliations

Julien Marquis is a member of the Geneva Bar Association and of the Swiss Bar Association.

Political Activities

Julien Marquis is a Municipal Counselor of the city of Versoix, in Geneva.