Xavier spent four years in Silicon Valley, where he co-founded GoodTime Labs, raised capital from Silicon Valley investors and shipped web & mobile products, and was tech lead for the Blackbox start-up accelerator. Back in Europe, he was CTO in different companies such as D'Ieteren's MyWay platform.

He holds a Master's in Software Engineering from UCLouvain, where he also taught, and a recent postgraduate degree in Generative AI and Machine Learning from the University of Texas at Austin completed in 2025. He is now senior agentic engineer in a Fintech and works in French and English.