Since Feb 2014 Vice President, Transilien SNCF
2010 to 2013 Strategy, Innovation and regulation Director, SNCF
2005 to 2014 SNCF ERTMS Director
2004 to 2010 TGV Rhin Rhone project Director
2001 to 2004 Ermewa group, Wagon Branch Chief Executive officer
1998 to 2001 SNCF Regional Director, Paris South East Region
1994 to 1998 SNCF Regional infrastructure director, Paris rive Gauche

Pierre Messulam co-edited with Professor Finger of EPFL Lausanne« Rail Economics Policy and Regulation” in September 2015 published with Elgar Publishing, London