Jules Bourgeois was initially associated with his father and brother in Rouen, as the Paris representative of the family weaving business (1881-1889) and later worked at the spinning mills of H. Schwartz in Sainte Marie-aux-Mines from 1893.
Bourgeois studied coleoptera then included in the then group Malacodermata, now unranked (Elateroidea (in part), Lymexyloidea, Cleroidea, Tenebrionoidea).
He described several hundreds of new species in many scientific publications especially in the Bulletin and Annales of the Société entomologique de France of which he was a very active member.
The author thus showed the great richness of the entomological fauna of the Alsace, the richest of France, after the Provence and Côte d'Azur.
His ore and mineral collection of the Rouen valley is one of the treasures of the museum of natural history in Paris.