Guillaume Roussange is a journalist and correspondent for Les Échos, currently based in Brittany. After joining the newspaper in 2008 as a regional correspondent in Picardy, he gradually expanded his coverage to Champagne‑Ardenne and Côte‑d’Or, while also working as a copy editor two days a weekclubpresse-bretagne.com. In 2023, he accepted the role of Brittany correspondent, where he now covers the region’s economic, social, and political dynamics with a particular focus on blue economy, agriculture, and innovation.

His reporting highlights the diversity and decentralization of the Breton economy, from agro‑industry and agro‑ecology to maritime sectors, defense, and family‑owned businesses that shape the region’s identity and resilience. Roussange’s work for Les Échos regularly explores how local enterprises—whether TPE, PME, or larger groups—reflect broader national issues such as employment, inclusion, environmental transition, and territorial development. His articles often illuminate how regional actors navigate global challenges while anchoring economic life in local communities.

Alongside his journalism, Guillaume Roussange is also involved in teaching at the Université de Picardie Jules Verne, contributing to the training of future media professionals. His dual role as reporter and educator reflects a career rooted in both field expertise and transmission of knowledge. Today, as one of the key economic observers in Brittany for Les Échos, he continues to provide in‑depth, human‑centered coverage of the region’s transformations and strategic sectors.