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Hello, I am
Sébastien Balieu.

Brussels-based entrepreneur. I co-founded and run Coddy, which turns cities into escape games played on a smartphone, and One More Pixel / Numinam, a digital studio that builds websites, apps and AI tools.

My expertise includes:

Full Stack Webapp Development
AI and No Code Technologies
Product Design and Strategy
Marketing and Growth Solutions
Business Development

Connect with me on LinkedIn

Sébastien Balieu at a glance

Sébastien Balieu is an entrepreneur based in Brussels, Belgium, with 20 years of experience in digital marketing, product design and software development. He is the CEO and co-founder, with Didier Boulvin and Stéphane Draux, of Coddy, a Brussels company that turns cities into outdoor escape games played on a smartphone, for families, friends, companies (team building) and schools. Coddy launched its first game in Brussels in February 2020, raised €600,000 in January 2022 and now operates in 74 cities in 9 countries. He also runs One More Pixel, a Brussels digital studio he founded, which works under the Numinam brand and publishes its own products, including the family chores app Harmonia. Before becoming an entrepreneur, he was Digital Marketing Manager at Walibi Belgium (Compagnie des Alpes group), Zetes and AvantageGolf. He is a self-taught designer and developer.

Role: CEO & co-founder of Coddy, founder of One More Pixel (Numinam)
Based in: Brussels, Belgium
Coddy: 74 cities, 9 countries, 250,000+ players (2026)
Funding: €600,000 raised by Coddy in January 2022
Previously: Digital Marketing Manager at Walibi Belgium (Compagnie des Alpes), Zetes, AvantageGolf
Fields: Urban escape games, gamification, digital products, AI, growth marketing
Languages: French, English