At European level, Julien Serres has already coordinated two scientific collaborations: one involving the universities of Lund, Amsterdam, Montpellier, and Marine Scotland Science, and a second involving the universities of Southern Denmark, Catania, and Messina.

At the national level, Julien Serres has numerous joint publications with the CRCA-CBI in Toulouse, the ONERA in Salon-de-Provence, and the CMP-EMSE in Gardanne, partners with which he continues to collaborate.