member of the Constraints research group of Laboratoire Informatique Nantes-Atlantique (LINA)
head of GIPAD (Computer Science for Decision Support/ Génie Pour l'Aide à la Décision) graduate specialty of the engineer school of École des Mines de Nantes.
PhD scientific advisor of Julien Menana (automata and constraint programming 2007-2010) and of Aurélien Merel (flexibility in railway optimisation problems 2008-2011)
maintainer of the global constraint catalog authored by Nicolas Beldiceanu
organizer of CP&OR, the french working group on integrating constraint programming and operations research, with Fabien Le Huédé
member of the french associations of constraint programming (AFPC) and of operations research (Roadef).
participant to the Gotha french working group on theoretic and applied scheduling, and to the RCPSP theme.
program comitee member: JFPC'09 (june 3-5, 2009, Orléans), JDIR'09 (february 2-4, 2009, Belfort), JFPC'08 (june 4-6, 2008, Nantes), JFPC'07 (june 4-6, 2007, Rocquencourt), MLS+CP (november 28-29, 2005, Nantes).
organization comitee member: JFPC'08 (june 4-6, 2008, Nantes), CP'06 (september 25-29, 2006, Nantes), MLS+CP (november 28-29, 2005, Nantes), ROADEF'03 (february 26-28, 2003, Avignon).
reviewer for Mathematical Programming, Discrete Optimization, INFORMS Journal on Computing, Journal of Scheduling, European Journal of Operational Research, Journal of Heuristics, Annals of Operations Research, Rairo-RO and for CPAIOR and CP conferences.