Julien Le Signor is an experienced sustainability professional currently serving as the Head of Environment at Geopost since March 2020, where responsibilities include leading sustainability programs across Europe focused on climate change, urban air quality, circular economy, and biodiversity. Previous roles include Sustainability Manager at Geopost, where Julien implemented significant greenhouse gas emissions reduction strategies and alternative vehicle deployments, and Sustainability Consultant at Mazars, managing CSR strategy projects. Prior experience includes positions at DHL managing sustainable logistics initiatives, an internship focused on continuous improvement at Amazon, and early roles in project management and research. Julien holds a Master's degree in Industrial Engineering & Management from INSA Lyon and participated in an academic exchange program in Environmental Sustainability & Business Management at Nanyang Technological University Singapore.