I am Editor of  Journal de Théorie des Nombres de Bordeaux.

I'm in the program committee of the following conferences:

• ANTS-X, Tenth Algorithmic Number Theory Symposium, University of California, San Diego, July 9th - 13th, 2012
• DMV-Tagung, Saarbrücken, Germany, September 17th, 2012 (Member of the Program Committee, Section Number Theory)

I was in the program committee of the following conferences:

• ANTS VIII Banff, Canada, May 17th - May 22nd, 2008 (Member of the Program Committee)
• ISSAC 2008 Hagenberg, Austria, July 20th - July 23rd, 2008 (Member of the Program Committee)