After studying at the college "Suzanne Deustch" of Moÿ-de-l'Aisne, then "Josquin-Dès-Près" of Beaurevoir, Dive entered the school "Saint-Jean" in Saint-Quentin.

After obtaining the Baccalauréat, he entered the Prytanée National Militaire of La Flèche in 2003 to prepare the competition of ESM Saint-Cyr to become an officer in the French Army.

At the same time, following the economic dismissal of his commercial father, Dive created with him a SARL in 2013 specialized in the sale of tools and maintenance of agricultural equipment for farmers in Aisne.

Born into a family of itinerant traders in the Saint-Quentin market in fruit and vegetables and whose grandfather had worked for 50 years, Julien Dive was always attached to the defense of local businesses.

[4] Following the 2015 French regional elections, the deputy for the 2nd constituency of Aisne, Xavier Bertrand resigned, to devote himself to the presidency of the Hauts-de-France.