Xavier embarked on the Cython+ project as an intern at Nexedi. Before that, he was studying embedded systems at Telecom Paris University. He likes bare-metal embedded systems and loves discovering new things about language design and type systems. He shares his time between his hometown in the foothills of the Pyrenees mountains and his work life in northern Lille. Back when the world was still sane, he enjoyed acting and formal debating. This will be his first talk ever at a conference.