Graduated from the California Institute of Technology with a Ph. D. in Aeronautics (93), Guillaume started his career in Engineering and R&D in the Transport sector, from aerospace as R&D engineer in Composite material at Aerospatiale (94-98), to Advanced project Director at Valeo Electrical System (98-06) to various position in Engineering and R&D at Alstom Transport. In 2010, still in Alstom Transport, Guillaume entered the Manufacturing world as VP industrial In 2016, Guillaume joined DS to lead the DELMIA Brand, DS industrial solutions portfolio to continue supporting all industries in the digital revolution to come.