She studied at the École nationale supérieure d'Arts de Paris-Cergy, then at the École nationale supérieure des Arts Décoratifs in Paris.

From 1983 to 1985, artistic director at Topologies – Publicis Conseil, she designed identities and institutional campaigns for ministries (women's rights, national education, professional training). In 1985, she founded the Polymago agency.

Juliette claims her practice as an attitude, which is manifested by the singularity of listening, of response and by the always questioned experience of the professions and techniques of graphic design. Her creations strive to compose words, images and signs to enrich the imaginary scope of the messages. Her approach tends to prove that the reality of an image is not only estimated by aesthetic parameters, but that it also comes from a social demand, a plastic thought and an ethics.

In 1991, after having created the identity of the national domain of Versailles, in 1999 she created that of the Musée du Quai Branly, then, the identity and signage of the Musée des Beaux-Arts de Dijon, the graphics of the “Dalí” exhibitions. Center Georges Pompidou and “Cosa Mentale” at the Center Beaubourg Metz.

Since 2016, she has headed the LMpolymago agency, continuing her faithful collaborations with the national estate of Versailles, the Quai Branly museum, and urban development establishments. In 2020, she designed the signage and identity of the Auvergne Metropolitan Library and in 2022, the communication identity of “Nice 2028, European capital of culture”. The same year, the Louvre called her to design information around the Carousel restoration project in the Tuileries. In 2023, the national domain of Versailles entrusted him with the cladding of the palisade of the site of the gate of honor.

With her team, she offers a complete reflection on identities, editions, communication and signage. She designs graphic and semantic universes, adapted to each new subject. Her approach is based on his experience and expertise in graphic design professions, around consulting, artistic direction, creation and coordination of multidisciplinary teams.