Head of Research, Soltis – Thierry is an engineer of the ENSH Versailles, with a specialty in plant improvement. From 1990 to 1998 he was first sunflower breeder, then program manager, at Limagrain Genetics. From 1999 to 2004, he was Sunflower Breeder at Soltis. Since 2004, he has been the head of research at Soltis. He is also facilitator of the group of French Sunflower breeders (UFS) .