Da yake yanke shawarar cewa yana son canji, Stéphane ya fara neman aiki a wata ƙungiya mai alaƙa. Ba da daɗewa ba ya shiga ƙungiyar agaji, Télécoms Sans Frontières, a lokacin Yaƙin Kosovo. Stéphane ya yi aiki a can kusan shekaru 5, yana gudanar da ayyukan gaggawa sama da 30 a matsayin Shugaban Ayyuka da Ci gaba.
A cikin 2003, ya bar TSF kuma ya shiga Surfrider Foundation Turai a matsayin Shugaba. A cikin shekarun Stéphane a matsayin shugaban kungiyar Surfrider ya zama jagora mai zaman kanta mai zaman kanta a Turai, ta lashe manyan nasarori a kiyaye teku. A lokaci guda, Stéphane ya ba da gudummawa sosai ga ƙirƙirar Teku da Platform na yanayi, wanda ya yi nasarar samun karo na farko da haɗin gwiwar teku a cikin rubutun yarjejeniyar yanayi a COP21 a Paris. Tun daga 2018, Stéphane ya yi aiki a matsayin mai ba da shawara mai zaman kansa wanda ke tallafawa ayyukan da suka danganci dalilai da yawa. Stéphane kuma har yanzu memba ne na Majalisar Tattalin Arziki, Zamantakewa da Muhalli zuwa yankin Aquitaine a Faransa kuma yana zaune a kan kwamitin kungiyoyi masu zaman kansu da kuma kudade da ke aiki a fagen kiyaye teku, kariyar muhalli, da tattalin arzikin zamantakewa, gami da: DAYA da Rip. Asusun Curl Planet, Majalisar hangen nesa ta Duniya, da 1% don Planet, Faransa.