Hi! I'm Guillaume, a CTO turned entrepreneur. Welcome to my corner of the Internet, where I showcase my work, craft, unfinished or imperfect projects, and the many other things I'm exploring.

Throughout the past decade, I have led 27+ engineering teams and built a €1M+ agency from the ground up. During this time, I continuously refined my craft by sharpening my eye through the inspiring work of many other builders, founders, and engineers, and working hard on my own skills to meet my ever-evolving taste for products that ship, scale, and last.

My appetite for sharing recently led me to focus on what I believe is the most underrated leverage in tech: teaching. Through @codewithguillaume and its 180k+ subscribers, I've taught 5M+ students and now help founders scale with the systems, code, and mindset it took me a decade to figure out.

When not building, I like sharing what I learned on my channel, through tutorials and live coding sessions. You can also find me sketching new ideas on a whiteboard or just walking around enjoying a nice cup of coffee.