Sébastien Lefebvre began his career at Videotron in Montreal as an architect for strategic planning before becoming a serial entrepreneur. He founded two companies, both of which exited successfully, including Mesagraph, an AI company acquired by Twitter in 2014. Following this, Sébastien relocated to London and served as Director of Growth, EMEA at Twitter for three years.

Deeply engaged in the startup ecosystem, Sébastien is recognized as a mentor and business angel, supporting founders and early-stage ventures. He is particularly interested in the transformative potential of Generative AI, exploring its opportunities and challenges for enterprises and entrepreneurs alike.

Today, Sébastien is a Partner at Elaia, a leading early-stage deep tech venture capital firm. Drawing on his experience as an entrepreneur and operator, he helps founders navigate the evolving landscape, offering practical insights and strategic guidance to foster innovation and growth.