Sandrine started her career client-side before founding We Are Social France in 2010. As early as 2005, Sandrine got interested in social networks as a new way for brands to engage conversations with their consumers. This passion for social media, still in its infancy, led her to found We Are Social, a pioneering and multi-award winning agency in France and abroad, a reference in the field of social media and influence, which she chaired for over 11 years. During this time, she had the opportunity to work along many prestigious brands such as Renault, Netflix, Orange, RATP, BNP Paribas, PSG and Ubisoft. Driven by creativity and innovation at the service of brands, Sandrine was also Vice-President of the AACC digital branch.

Thomas became interested in the Internet and programming in 1994 in London and, in 1996, he founded with Edouard "5eme Gauche", one of the most awarded independent digital agencies in France. For 25 years, he participated in the creation of multiple digital innovations for the biggest players in the market (Darty, Auchan, Yves Rocher, Optic 2000, Toyota, Van Cleef & Arpels,...). He has shared his convictions in the digital communication masters of many schools (Science Po Paris, Paris Dauphine, La Sorbonne, Audencia). In parallel to his professional activities, he is a volunteer for several causes: the association "Vaincre l'Autisme" (Overcoming Autism) which works for an educational approach to the disease, the "Fondation Edgar Morin" which works for knowledge and thought capable of confronting the complexities of reality, and the "Fondation S. Rusconi" which fights against professional determinism.

For over 20 years, Olivier has co-directed some of the most creative creative and digital agencies on the market, including TBWA, BETC, Marcel, Dentsu Isobar, and others. He has accompanied CAC 40 clients in most sectors, as well as smaller companies and start-ups, in their transformation, innovation, and communication challenges. Creativity is at the heart of his approach and he and his teams have contributed to winning more than 30 Lions, 8 Effies awards and numerous prizes in all the world's creativity and efficiency festivals. His expertise spans branding, digital, content, experience design and innovation.

Matthieu started his career with an entrepreneurial adventure by creating a first web agency in parallel with his engineering studies.  The adventure lasted 4 years before joining FullSIX France in 2004 as an intern. He left 16 years later as General Manager within the Havas Group (acquisition of FullSIX Group in 2015). With his versatility, digital marketing, creativity and technology, Matthieu is driven by the desire to change the way brands consume by creating unique, useful content or services that create emotional and business value for both the user and the brand.

Edouard is one of the pioneers of digital in France with over 25 years of professional experience. Entrepreneur and expert in digital eco-systems for brands, he founded the digital agency 5eme Gauche in 1996, which was 3 times digital agency of the year and won numerous creative awards. Professor at Sciences-Po for 7 years, President of the digital AACC and Vice-President of the AACC, he accompanies major brands in their e-commerce or conversion issues such as DARTY, Yves Rocher, Quick, Système U, Van Cleef & Arpels, Ruinart, Chanel, BPI, La Région Ile de France...