Paris, Île-de-France, France
Guillaume is an entrepreneur and private investor in early-stage startups, and was recently Managing Partner at BXVentures, a climate tech fund. Prior to BXVentures, in 2016 Guillaume cofounded Nalo, the top two robo-advisor in France, sold to Apicil Group after seven years with 400m€ in assets under management and 20k clients. This entrepreneurial experience followed a 10-year career in fixed income capital markets, beginning with Lehman Brothers in London in 2003 as a credit structurer developing esoteric investment products for institutional investors. From 2008 Guillaume became a credit risk and Basel III regulatory standards expert for major international bank clients. In 2009 he moved with Nomura to Paris, where he managed client relationships with the larger French banks' credit portfolio and liquidity management functions. Guillaume is and has been an elected board member of the Glénans sailing school, General Secretary of the Glénans Avenir foundation, and Treasurer of the Chicago Booth French Alumni Club. He is a 2015 MBA graduate from the University of Chicago Booth School of Business. He is a CFA charterholder since 2010. He received his Master in Physics with First Class Honours from Imperial College London in 2003, with a year abroad at the Karlsruhe Institute of Technology in Germany. Multi-lingual and a French/American dual-national, Guillaume grew up in New York, Chicago, Tokyo and Paris. He is a seasoned world traveller (first unaccompanied flight at age 4), is passionate about sailing in all its forms, and holds French federal instructor licenses for both dinghies and cruise yachts. He hopes one day to sail around the world.
• 08/2025 Leano • 07/2025 Cactile • 03/2025 Load Stations • 09/2024 National Cyber Shield • 06/2024 Alatyr • 02/2024 HABS • 12/2023 Paradigme • 12/2023 Dealt • 06/2023 TRAXxs • 04/2023 Aldebaran • 04/2023 Youzd (failed 10/2025 x0) • 03/2023 Toog / PlayPro (10/2025 MTM x0.5) • 01/2023 OneFlash • 12/2022 Unipile • 12/2021 Money Walkie • 11/2021 Juste Pressé (failed 03/2023, x0) • 06/2021 Blockpulse (failed 01/2025, x0) • 04/2021 Buldi (failed 08/2024, x0) • 03/2021 Quantiq (failed 05/2026, x0) • 01/2021 Quartz • 12/2020 BuyBox • 05/2020 Check & Visit (exit 12/2022, x4.3) • 10/2019 Silkpay • 07/2019 Panopli • 04/2019 Axonaut (MTM 12/2025, x15) • 09/2018 Shapr (write off 01/2023, x0.25)
Investing in globally sourced tech infrastructure ventures (blockchain, AI...) with cutting edge real world applications (financial services, cyber security, entertainment...)
Climate tech venture studio
Climate tech fund
• Grew business from zero to 400m€ AUM and 20k clients • Leading French roboadvisor with highest AUM/(Spent Captial) ratio • Top 2 investment broker in Generali France's online segment after Boursorama bank • Sold to Apicil Group
Vice President - Head of Bank Structured Solutions Sales France (credit risk and capital advisory) • Top 5 producer in 2011 across all European fixed income sales force (30% of 15 person team) • Established Nomura over 3 years as market leading Solutions brand with client senior executives • Earned and honed top tier client trust over 15 months to successfully negotiate $8bn risk structure Vice President - Solutions Structuring • Marketed capital solutions to institutions across Europe, introducing Nomura Solutions brand • Taught mechanics of risk transfer and structured funding to internal European sales force • Executed $20bn with team in risk transactions and other structures for client banks