Guillaume Leti

Guillaume Leti is CEO and Co-founder at Carbonable, a carbon portfolio management platform he co-founded in November 2021. At Carbonable, he leads the development of technology for planning, managing, and reporting carbon contributions, with a focus on transparency and auditability in nature-based decarbonization projects. He has spoken at the Corporate Investments into Forestry and Biodiversity (CIFB) conference in London, addressing topics including technology applications in quantifying carbon results and the role of nature in net zero. He is also a Partner at 50 Partners, a venture capital firm, a role he has held since March 2024, and an Advisor at Cauri Money since February 2025. He was a finalist for the EY Entrepreneur of the Year award.

Prior to Carbonable, Leti served as a Senior Product Consultant for a technology and media company from January 2019 to May 2022, covering market research, competitive analysis, and product definition. He was Head of Product at BroadbandTV (BBTV) from November 2016 to January 2019, leading the company's flagship product. Before that, he worked as a Producer and Product Owner at Stradigi AI from March 2015 to October 2016, and as a Key Account and Project Manager at Triton Digital from March 2013 to March 2015. He co-founded SEXTAN GROUP in May 2020, where he helped develop IMPACTr, a management platform for non-profits, and co-founded Art4Humans in February 2019, an organisation focused on promoting human rights through art. He holds an MBA from HEC Montréal and an engineering degree from Grenoble INP - UGA.