David Roy-Guay is a postdoctoral student at Institut quantique and client of the payload team for mission QMSat, to be launched in 2021. Following his PhD in diamond based magnetometry, he has prototyped the magnetometer over the last two years together with a team of electrical engineers. He is also the inventor of a patented novel vectorial magnetometry technique for quantum sensors. Currently, part of his research is focused on the development of new tools to characterize new quantum materials for tomorrow's sensors.