


Operations • Systems • AI • Finance
I design and scale operational, pricing and automation systems for fast-growing companies operating in messy, complex environments.
Operator · Systems Builder · Founder
Track record
Built in the field. Measured in real numbers.
I step in when operations are breaking under growth. Scattered workflows, manual chaos, weak visibility, no systems. My role is to build the operating infrastructure that makes scale manageable.
Fast diagnostic. Focused plan. Hands-on execution. Durable systems.
Within 24–48h, I map the financial, operational and organizational constraints to identify the highest-leverage actions.
I define a focused action plan with clear owners, priorities, metrics and deadlines.
I take direct ownership where needed: systems, reporting, processes, team structure, crisis stabilization.
I turn emergency fixes into durable systems that scale beyond my intervention.
Case studies
Direct feedback from the people I have worked with
"Thanks to Guillaume, we structured our finance in 3 months and raised €2M. His expertise allowed us to maintain control while accelerating our growth. A trusted partner."
"We mandated Guillaume during the sale of Glossybox (€70M revenue). The sale was blocked due to data quality. Guillaume restructured the entire group across 5 countries, brought everything into IFRS compliance and managed a tax audit on our holding. The sale was finalized 8 months after his arrival."
"His scaling expertise allowed us to grow from 10 to 100 employees without losing control. Guillaume knows how to anticipate growth challenges and implement the right systems."
"Guillaume and I worked together in Africa Internet Group for about 9 months. Guillaume has a very professional mindset, sharp, diligent, never the one to sweep issues under the carpet. He's well versed in financial management and is very good at applying it and coaching the team. He'll be a valuable addition to any team."
"Since the beginning of his journey at Rocket Internet, Guillaume has proven many times he is able to understand problems quickly and provide pragmatic solutions in many aspects of the business: cost control, contracts, people management and many others. He is able to have a 360 view of the business and provide the right solutions to sustain healthy growth."