Romain Sestier

Romain Sestier is a co-founder of StackOne, a company operating in the software development sector. StackOne power-up your AI apps. Based in London, England, United Kingdom, Romain leads the company's strategic vision and day-to-day operations.

Under Romain's leadership, StackOne recently secured $20M in Series A funding on May 6, 2025, backed by investors including GV. This funding milestone reflects strong investor confidence in both the founding team's execution capabilities and the company's market opportunity.

With fresh capital, Romain and the team are focused on scaling operations, expanding the product roadmap, and building out a world-class team. The software development market continues to see significant investment activity, positioning StackOne to capitalize on growing demand.For vendors and partners, this represents an ideal window to engage.