Sell holds a Master in Business Law and Taxation from Université of Bretagne Sud and the CAPA (post-graduate legal qualification required to practice as a solicitor or barrister in France). In 2018, Sell joined Fidal’s tax team in La Roche sur Yon.

Sell deals with tax matters concerning French or international groups, as well as local SMEs in various sectors (transport, industry, agrifood, construction, etc.). In addition, Sell deals with tax matters relating to individuals.