In 2013, Jelle Saint-Germain earned his degree in chemical engineering from the University of Ghent and immediately embarked on his career as a project engineer at Valvan. Shortly after completing his studies, he embarked on a professional journey as a project engineer at Valvan, the leading company within the Valtech Group. Valvan specializes in designing and manufacturing baling presses and textile sorting machines.

After accumulating three years of technical experience, he was offered a transfer to Ad Rem, a subsidiary of the Valtech Group, where he began his role as a sales engineer in 2016. As part of his responsibilities, he had the opportunity to travel to Sweden for an 8-week period. During this time, he played a vital role in the launch of Europe's largest flotation plant, overseeing the installation's various tests and commissioning processes.

Furthermore, he actively participated in a study to optimise material flows in recycling procedures. His expertise was valuable in developing new plants to separate aluminium and other non-ferrous metals from automotive shredder residues and incinerated bottom ash. These initiatives demonstrated his strong commitment to advancing sustainable practices within the industry.