Julien Galtier



Julien, the CEO of the non-profit organization Mass Critique, has been an entrepreneur in marketing and technology for nearly 20 years. He co-founded three companies in the fields of e-commerce, digital marketing, and content creation before shifting his focus towards impact entrepreneurship.

Since 2019, Julien has dedicated himself to the socio-environmental transition of society through his personal and professional commitments. He is passionate about organizational adaptation and resilience strategies, particularly as a consultant for new business models inspired by the circular economy.

Julien also serves as a mentor for impact entrepreneurs, conducts workshops to raise awareness about climate issues, and frequently speaks as a lecturer.


  • Business development
  • Growth hacking
  • Sales - BtoB
  • Sales - SAAS
  • Web and digital marketing


  • Digital marketing & Telecommunication
  • Environment
  • Retail market
  • Sustainable development
  • Technology