Julien has been appointed Director of the great Challenges (Directeur des Grands Défis) in the French Innovation Council. He was previously Director of Strategy and Programmes at List, the Institute for digital and artificial intelligence technologies, with more than 700 researchers located in Paris-Saclay and Grenoble.
He implemented the strategy for a wide scope of digital technologies, such as cybersecurity, AI or cyber physical system, for the institute and set partnerships between research and industry; in particular in regards to the thematic of trust in AI and its implementation in embedded systems.
Before this, he had operational positions at scientific level as well as management level at Leti, the institute for microelectronics and IT technologies. From 2008 to 2010, he coordinated the nanoscience and nanotechnology programme at the National Research Agency.