He worked briefly as a field service engineer and trainer on Liquid Chromatography coupled to Mass Spectrometry (LC-MS) systems for Finnigan MassLab before joining the Centre for Surface and Materials Analysis (CSMA) to pursue a career in analytical services, focusing particularly on the Secondary Ion Mass Spectrometry (SIMS) and X-ray Photoelectron Spectroscopy (XPS) techniques. CSMA was acquired by Lucideon in 2002 and eventually evolved into the Surface Science group.

Jean-Claude, in his analyst role, has over 20 years experience in the use of the SIMS and XPS techniques for characterizing the surface of materials and solving industrial problems and product failures. The range of industrial areas he has served is wide and includes medical devices, pharmaceuticals, packaging, polymers, coatings, electronic & semiconductor devices, automotive & aeronautical components, personal hygiene & household products, and lubricants.