The official assistant for entrepreneurs in France. Over 20 socio-fiscal simulators, one million users per month.
A public digital service built by Urssaf as part of the beta.gouv.fr program, used by over one million users every month. The site offers around twenty simulators and assistants covering the legal, tax and social aspects of entrepreneurship: choosing a legal status, calculating contributions, hiring costs, comparing schemes, dividends, business cessation, collaborative economy…
The calculation engine partly relies on Publicodes, an open source declarative language that models French socio-fiscal rules and explains each result to the user. Simulators can be embedded on third-party sites via iframe or REST API.
I have been lead developer on the team since early 2024. Beyond code, I support the team on development practices, architecture decisions and software quality. On the development side, I designed the collaborative economy simulator (furnished rental) and I contribute to the legal status comparator, question orchestration in simulators, the design system…