My name is Bruno Dubois and I live in Nailloux, France, near Toulouse. I am a mechanical engineer and I lead the mechanical design of ChemCam. For six years, I drew each mechanical part of the instument, including CAD drawings. I also designed a Martian environmental chamber used for the of ChemCam Mast Unit calibrations. Now that ChemCam is on its way to Mars, I am involved in the mechanical design and architecture of other instruments for other astronomy projects, especially those searching for exoplanets. When I was young, I wanted to work for "LEGO." Stars and the Universe became my interest when I grew up. One of the most exciting experiences in my career as an engineer was being present when the ChemCam Mast Unit was added to the top of Curiosity's mast.