Guillaume Dubray is the Managing Partner of Polytech Ventures, a venture capital firm based at EPFL in Lausanne. See sector focus and contact routes.
Guillaume Dubray is the Managing Partner of Polytech Ventures, a venture capital firm based at EPFL in Lausanne, with nearly 20 years of experience in private equity and corporate finance dating back to his start at Ernst & Young in Geneva and M&A advisory work in New York. He leads an early-stage investment thesis focused on technological startups in Switzerland and Silicon Valley, with a specific emphasis on the FinTech and HealthTech sectors. While specific check sizes and lead/follow behavior are not explicitly detailed in available sources, the firm manages the $40 million Polytech Ecosystem Ventures fund to bridge European startups to Silicon Valley. Notable portfolio companies include Neho, a prominent Swiss PropTech startup he co-founded, and Fusion, Switzerland’s first FinTech accelerator which he founded. Dubray also co-founded Active Niche Funds SA, an investment firm specialized in the CleanTech sector, reflecting a broader interest in technology-driven sustainability. His distinctive point of view centers on building a bridge between European technology ecosystems and Silicon Valley to accelerate startup growth.
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