I’ve been building alongside Louis, my best friend and cofounder, since we were 12. At 21, I took a €50k student loan, went all in on crypto, and turned it into a few million. I turned down an offer from BlackRock, dropped out of École Polytechnique, France’s top engineering school, and started Zefir.

When the real estate market turned and rates spiked, we pivoted fast and used everything we’d built to create an AI transaction layer for home sales. Since then, we’ve scaled to hundreds of millions in GMV and tens of millions in revenue, growing ~3× YoY, and raised ~$55M from top investors like Sequoia Capital to build the AI OS for European housing.