Claire Bretton is a founder and operator blending product, data and sustainability expertise across circular-economy ventures and tech-enabled retail. With four years in product/engineering-adjacent roles and a longer track record in pricing, AI-driven retail analytics (daco.io) and crisis-driven civic tech, she now runs Underdog—a Nantes-based refurbished appliances business—and co-leads Climate House to accelerate ecological transition. Claire has hands-on backend experience contributing Python fixes to the widely used Odoo ERP accounting module, demonstrating practical technical fluency alongside CEO responsibilities. A Cambridge executive alumnus in Circular Economy and an ESCP Master in Management graduate, she uniquely pairs startup execution with systems-level thinking about reuse and climate investment.
3 years of coding experience
5 years of employment as a software developer
Executive program | Circular Economy & Sustainability Strategies, Executive program | Circular Economy & Sustainability Strategies at University of Cambridge
Master in Management, Master in Management at ESCP Business School
Contributions:581 reviews, 33 commits, 194 PRs in 2 months
Contributions summary:Claire primarily contributed to the back-end functionality of the Odoo ERP system, focusing on the "account" module. Their work involved fixing bugs related to formula parsing in reports, addressing issues with syntactic sugar formulas in account report lines, and incorporating tax updates for various regions like Luxembourg and France. They demonstrated expertise in Python, the Odoo framework, and the core accounting features of the system.
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Claire Bretton - Co-Founder at Mouvement Impact France