Bertrand began his career with Mitsubishi Electric where he implements a manufacturing microelectronic components. He then joined the DFO group, world leader in the manufacture of optical discs, for which he initiates and directs their Asian subsidiary. He then became head of the French factory and industrial developments coordinates U.S. subsidiaries.
Bertrand then became head of the Venture Capital Company "Britain Junior" and more than 30 investments in Brittany innovative companies.
Bertrand is a graduate engineer SUPELEC and has a postgraduate degree in Business Finance from the University of Rennes 1.