Senior Engineer Jelle Kuster is one of the group of five experts at the PCV Group with a particular focus on the subject of testing. After all, the value of a technical solution is measured by its practical viability. Since the company wants to create value for its customers, testing is the common thread running through all the work of these product developers based in Enschede, in the Netherlands. This testing is the only way to determine what works and where exactly further optimisation is needed. Continuous analysis is what makes outstanding engineers. The following interview gives a glimpse into this.