Welcome to Gillioen Avocats
Law firm practicing in immigration law
-
Corporate clients
-
Private clients
Meet the team
Alexandre GILLIOEN
Partner & Founder
After having lived in foreign cities for many years and countries (Brussels, London, Washington, Douala), I decided to create my practice in Lyon because I consider this city as full of opportunities and ideal for a new start. Lyon, a city on a human scale located near Switzerland and Italy, is also a welcoming place for those of us who decide to come and put down roots here. After four years of experience in the field of immigration, I handle on all aspects immigration law.
Sarah STADLER
Senior Associate
After four yours working in Paris as an immigration lawyer, Sarah joined the Defenseur des droits. She worked there to help people who are facing difficulties facing the french administration and on cases where people’s rights were not respected. She then went on to work at the Court d’appel de Grenoble and also for the OFII. Following these experiences Sarah came back to the Bar association and joined our firm as a senior associate with more than ten years experience in the field of immigration law both with the administration and as a lawyer.
Testimonials
To live and work in France
After several years of practice, the firm has developed a unique set of skills in the field of immigration law. All the people and companies we advise have a common goal: to achieve a stable and sound situation on the long term concerning their immigration status and the right to work in France.
We are going to make it happen together
The firm is located in Lyon, a dynamic city full of opportunities, however we operate everywhere in France to assist our clients according to their needs, whatever they may be.

Last articles published
-
Multi-Year Talent Residence Permit: New Salary Requirement for Obtaining the Permit
Excerpt: The multi-year talent residence permit has undergone a change, as a new salary requirement came into effect on 29 August 2025. Since the decree of 13 June 2025, a new drafting had amended…
-
French nationality: the B2 language level
Excerpt: French nationality: the B2 language level is now mandatory. In the context of French nationality, the required language level was raised to B2 following the publication of the decree of June 13, 2025.…
-
The DRIETS Opinion for Entrepreneurs/Self-Employed Professionals – Now for Everyone
Excerpt: The DRIETS opinion for entrepreneurs/self-employed professionals in the service sector has now become mandatory. Foreign nationals engaged in a service-based professional activity must now obtain a DRIETS opinion before applying for the residence…