Arithmetic-Geometry Seminar, LIV Bayreuth, Germany.

Since 2015, I am the organizer of the Arithmetic-Geometry seminar which is a joint weekly seminar with Prof. Dettweiler and Prof. Stoll.

Leray Seminar, WWU Muenster, Germany.

From 2012 to 2014, I have been the organizer of the Leray Algebraic Topology seminar for Michael Weiss. I also organized some specials sessions around the topic of Operads.

Bureau des doctorants de l'IMJ, Institut of Mathematics of Jussieu-PRG, France

From 2007 to 2009, I have been a Phd representative at the Institut de Mathématiques de Jussieu in charge of the daily life of the PhD students (offices, IT service, etc).

The daily (mathematical) life at the Institut according to the PhD students website, with informations on the first steps at the Institut, the submission of the thesis and other amenities.

IMS'06, Avignon, France

From 2003 to 2006, I participated to the organizing committee of the International Mathematica Symposium 06. This symposium took place for 1 week at the Palais des papes in Avignon France and gathered around 150 users of the computer algebra system Mathematica coming from various scientifical areas (physicist of the CERN, computer scientists, biologists, mathematicians, architects,...).
I also gave a hand for the afternoon meeting on Teaching with Mathematica, organized by Jean-François Gouyet.

Support of INRIA, AMD and Apple.
Around 150 participants.

Update:January 2017