Guillaume pursued a Master’s Degree at WPI after finishing 2 of the 3 years at ENSIC Nancy (Ecole Nationale Supérieure des Industries Chimiques). The MS degree at WPI is like a third year in France. He graduated in 2005 both with a MS in Chemical Engineering at WPI and as an ingénieur at ENSIC, in France. His MS thesis is entitled "Radial Heat Transfer Studies in Low Tube to Particle Diameter Ratio Fixed Bed Reactors".

Guillaume is currently working in the USA at CYTEC Industries Inc., in Connecticutt.