Guillaume Derivery
CTO / Fullstack dev / CPO. On Scope, on Time, on Budget.
- 5.00
- Rating
- 6
- Followers
Signed an MSA w/ Guillaume on a full-stack legal tech build and he was EXCELLENT. Guillaume understood our vision and turned that into clean, scalable architecture. He communicates frequently and hits timelines (even beats deadlines). He is also commercially savvy and has great insight on strategy decisions. I plan to continue working with Guillaume, Lawpair.com wouldn’t be where we are today without him!
Working with Guillaume for over a year has been exceptional. As CTO of Chivy, he has consistently demonstrated high technical rigor, clear judgment, and strong ownership. He is professional, reliable, and always on time with deadlines. His execution quality and leadership on the technical side have been a major asset to the company.
I’ve collaborated with Guillaume on multiple projects, ranging from AI-powered legal tools to consumer apps and Web3 products. He consistently operates at a very high standard, both in technical execution and product strategy. Guillaume is not just an executor but a true CTO-level partner you can trust to design reliable, scalable technical foundations and make the right product decisions. He brings rigor, clarity, and reliability, even under complex constraints and tight timelines.
Collaborator•Jan 14, 2026
We’ve worked with Guillaume for over two and a half years, and he’s been absolutely critical to the evolution of our core architecture. He played a major role in setting up, upgrading, and refactoring our main infrastructure framework, and consistently demonstrated deep expertise in the infra space. Guillaume is incredibly responsive, follows through reliably, and communicates clearly throughout every phase of a project. He’s proactive, thoughtful in his technical decisions, and a trusted partne
I had the chance to work with Guillaume at Pety, and he’s one of the rare CTOs who truly combines product vision, business sense, and technical excellence. He turns strategy into fast, structured execution and built a scalable insurtech platform in just months. Demanding on quality, pragmatic in decisions, and always impact-driven, Guillaume is a tech leader you can fully trust to deliver real business value.
Client•Jan 16, 2026