Dylan Lessel began his career in 2010 at Kamel Mennour gallery, of which he became the director until 2018. For the past decade, he has accompanied the development of private collections and worked on a large number of artistic and museum projects. In 2019 the two of them teamed up to manage estates, among others those of Georges Mathieu and Alain Jacquet. Together they further grew their secondary market and art advising activities.