Johann Grandvuillemin has been a project manager at PSA Peugeot Citroen for the harness 2D design tools (including the CHS tool suite) since 2009. From 1999 to 2004, Johann studied at Neuchatel Engineering University, Switzerland, where he received a B.S. degree in Electric Engineering. From 2004 to 2005, he prepared a Master of Science in "Processes and Proceedings of Electric Energy" at Louis Néel University in Belfort, France. Between 2006 and 2009, Johann was a Ph.D. candidate for PSA Peugeot Citroën and the University of Franche-Comté, France. He studied electro-thermal effects in automotive power networks, which led to the development of internal harness simulation software, the registration of four patents, and participation at several international conferences.