Designer and architect, he believes in the project as a tool to spread poetry in the world of things. Director of the Domus Academy Master in Design from 1990 to 1993, he was part of the Olivetti Design Studio, designing cash dispensers and personal computers. In 1999 he founded FRAGILE, a corporate identity studio that he led together with Frida Doveil, designing brands, identity systems and communication strategies for many international companies and institutions. He designs products for Alessi, Alias, Artemide, Caimi, Deborah Milano, De Castelli, Hansa, Numa, Pasabahçe, Salvatore Ferragamo, and Serafino Zani.

In 2016 he won the Compasso d’Oro with the Ossidiana coffee maker for Alessi. In 2019 he held his two solo exhibitions of drawings: “Mario Trimarchi: un romantique radical” at the Italian Cultural Institute in Paris, and “La cerca de la frontera entre l’útil i l’inútil” at the Design Hub in Barcelona.
He constantly continues his sculptural research on objects, creating Oggetti Smarriti, Strawberry Fields Forever and Close to the Edge, self-produced under the MT Artworks brand. His production includes also handmade drawings and illustrations that reveal the soul of his design projects and drive into his black-and-white poetic landscapes.

In 2022 he was invited by Korean Craft and Design Foundation to design five little Altars in Yugi Brass at the Fondazione Giangiacomo Feltrinelli in Milan. In the same year, he was awarded the Targa d’Oro by the UID, Unione Italiana Disegno. Former Professor of Corporate Identity at the Faculty of Architecture in Genoa, he currently teaches Brand Design at Naba, Product Design at Abadir and Design Thinking at Iulm. He draws day and night.