The team
Boutique law firm, WJ Avocats is made up of lawyers and legal experts practicing in several languages, as consultants and litigators.
The team’s skills are cross-disciplinary and complementary, enabling a global grasp of the most complex situations and the ability to intervene before all national, foreign and international jurisdictions.
Thanks to its 20 years’ experience in international litigation, the firm can guarantee its clients, be they natural persons, legal persons or institutions, its absolute availability as well as the highest quality of tailored support.
William Julié
Founding Partner
Paris Bar
Works in French and English
- INTERNATIONAL CRIMINAL LAW
- Criminal Law
- WHITE COLLAR CRIME
- Sanctions
- INTERPOL
- Human Rights
- COMPLEX CROSS-BORDER LITIGATION
Memberships
- International Criminal Law Officer of the International Bar Association (IBA)
- European Bar Association (ECBA)
- President of the Commission Pénale de l’Association des Avocats Conseils d’Entreprises (ACE)
- Forum des Avocats Spécialistes de l’Extradition (DELF)
- Association des Juristes Franco-Britanniques (LBLS)
Member of the Paris Bar since 2000, William JULIÉ is a Franco-British lawyer, who worked mainly in criminal law, before focusing his practice on International and European Criminal Law.
After studying International Law at the University of Paris-Sorbonne (Paris I), William JULIÉ turned to Criminal Law, obtaining a doctoral certification (Doctorat d’études approfondies) in European Criminal Justice Policy directed by Professor Mireille Delmas-Marty while also attending the Institute of Criminology at the University of Paris-Assas (Paris II).
His first years fine-tuning his skills as a criminal and fundamental rights lawyer were spent working alongside renowned professionals, amongst whom Maître Henri Leclerc (President of the Human Rights League).
He has developed a strong practice in International and European criminal litigation, especially in extradition proceedings, international and European arrest warrants, and withdrawal of INTERPOL Red Notices.
He has since extended his practice to complex and technical international and transnational litigation cases, in particular international and European sanctions, including before the Court of Justice of the European Union, and the recovery of frozen assets.
He regularly intervenes as a legal expert in criminal law and human rights law before foreign courts.
William JULIÉ is on the List of Counsel to the International Criminal Court.
Amélie BEAUCHEMIN is an attorney at the New York Bar and Paris Bar.
Before joining WJ Avocats, she taught an introduction to International Criminal Law within the International Law program for Arabic speakers at the Washington College of Law and worked for the international co-prosecutor’s office in the Extraordinary Chambers in the Courts of Cambodia (ECCC). She also collaborated with several Syrian NGOs, coordinating the work of the teams on the ground and co-teaching the principles of International Criminal Law and Crime Documentation to Syrian lawyers and activists.
She holds a bilingual Master’s degree in International and European Law from the University Paris-Ouest Nanterre La Défense and an LL.M in Human Rights and Humanitarian Law from the American University Washington College of Law.
At WJ Avocats, she developed a strong expertise on international sanctions matters and assisted multiple clients in the context of annulment proceedings.
She also regularly works on cross-border criminal cases.
Associate
Paris Bar
Works in French, English and Spanish
Elena MORENO is an attorney at the Paris Bar.
She completed a double degree in Franco-English law, obtaining an LLB in English law and a Maîtrise in international and European law. She also holds a Master II in International Law and Organizations from the Université Paris I Panthéon-Sorbonne.
After various experiences in international criminal law and human rights (Council of Europe, United Nations High Commissioner for Refugees and the European Parliament), she worked on European sanctions litigation as an associate at Acquis EU Law & Policy.
Elena MORENO joined WJ Avocats in 2024, and mostly covers INTERPOL, extradition and European sanctions cases.
Camille GOSSON is an attorney at the Paris Bar.
She graduated with a Master 2 in International Criminal Justice and a Master 1 in Criminal Law and Criminal Sciences from the University of Paris-Panthéon-Assas. She also has a background in Common Law from the same university and an exchange year at McGill University.
After working with a defense lawyer in Montreal, she joined the International Law Clinic of Assas to work on the qualification of international crimes committed during the conflict in Tigray, Ethiopia. In 2023, she was part of the Defense Team for Mr Pjetër Shala at the Kosovo Specialist Chambers in The Hague.
At WJ Avocats, she mainly works on cases related to INTERPOL (red notices) and International and European Criminal Law (sanctions).
Associate
Paris Bar
Works in French and English
Sophia BIDINE is an attorney at the Paris Bar.
She holds a Master’s degree in Public International Law and a University Diploma in Comparative Legal Studies from the University of Aix-Marseille.
She has developed solid experience in transnational litigation involving complex issues related to human rights, migration, asylum, and extradition, with particular expertise in matters of international cooperation and public policy.
She has also worked at the heart of international institutions, serving as a lawyer for the United Nations internal justice system, the Defense Office of the Special Tribunal for Lebanon, and the Victims Participation and Reparations Section of the International Criminal Court, which has provided her with a practical mastery of international criminal law, humanitarian law, and the functioning of international organizations.
Enriched by her experience at the International Prison Observatory, she also regularly handles cases involving penitentiary issues.
A trainee lawyer since January 2026, Inès ARIBI holds a trilingual Bachelor’s degree in European Law from the Université Catholique de Lille (Parisian campus) and a Master’s degree in General International Law from Université Paris Cité. Her path has focused on human rights and criminal law. She has completed an internship in the children’s rights department of the Défenseur des droits, civic service with the NGO Grandir Dignement working with detained minors, and has gained experience in criminal law firms.
These experiences have enabled her to develop a committed approach, both nationally and internationally. At the same time, she co-chairs the association Droit dans les yeux, whose aim is to make the law accessible to young people from underprivileged neighbourhood.
Inès joined the firm as a trainee lawyer in January 2026.
Trainee Lawyer
Works in French, English, and German
Tiphaine HERVÉ graduated from the University of Aix Marseille, where she obtained a Master’s degree in Public International Law.
She worked at the United Nations Office on Drugs and Crime in Vienna, where she attended several conferences and expert meetings on international criminal cooperation issues and helped organise the 2023 Commission on Narcotic Drugs.
Her experience in various law firms and in the investigation department of the Bobigny Judicial Court has enabled her to develop her knowledge of criminal law.
Tiphaine joined the firm as a trainee lawyer in January 2026.
Laure SAINTIGNY is a trainee lawyer with a double bachelor’s degree from University College London and Sciences Po Paris, as well as a master’s degree from the Sciences Po Law School.
She gained her first professional experience in humanitarian law and international criminal justice at the Colombian Red Cross and the Human Rights and Humanitarian Affairs Sub-Directorate of the French Ministry of Foreign Affairs. She then worked for several criminal law firms and spent several years as a judicial attaché in the economic and financial division of the Paris Court of Justice.
She joined the firm as a trainee lawyer in January 2026.
Trainee Lawyer
Works in French, English and Spanish
Trainee Lawyer
Works in French and English
Laura VILHET graduated from Leiden University (The Netherlands) with an LL.M. in Public International Law and from the University of Paris-Panthéon-Assas with a Master’s degree in International Criminal Justice.
Following a first experience in an English court, she worked on the qualification of international crimes for Leiden University International Humanitarian Law Clinic and Assas International Law Clinic. She worked for the Crimes Against Humanity and War Crimes Section of the Canadian Department of Justice and the pre-trial judge of the Kosovo Specialist Chambers. She also developped an expertise in the field of european arrest warrants and extradition at the Office of the Prosecutor-General of the Paris Court of Appeal.
She joined the firm as a trainee lawyer in January 2026.
Stéphanie ensures the administrative and organizational functioning of the Firm and supports the team in all of its operational needs.
Before joining WJ Avocats, she worked within the international law firm Orrick, Herrington & Sutcliffe, where she progressed from the position of reception hostess to that of Office Manager.
She also held the positions of Office Manager and Onboarding Officer within the multinational company D-EDGE, and worked within Walt Disney World Resort in Florida, United States.
