Our Story

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Meeting between Guillaume, Gilles and Romain

Guillaume, Gilles, and Romain met to prepare a bid for a naval tender in Australia.

Proponant foundation

Guillaume created Proponant after 10 years working for a major player in the naval defense sector. He developed his know-how working for major players in the naval and offshore energy sectors.

Oppy International co-foundation

Romain and Gilles co-founded Oppy International to offer their expertise in international development and security.

Semeurs d'Impact co-foundation

Guillaume co-founded Semeurs d'Impact to offer a structuring and development service for positive-impact companies. The adventure comes to an end but was a rich experience.

Proponant and Oppy International merge

Proponant and Oppy International have come together to provide a variety of services dedicated to advancing maritime innovations and managing complex international projects. Their collaboration aims to bring innovative solutions and expert support to clients worldwide.