Born and raised in Italy, Design and Architecture have always been part of his life. After having his first art exhibition and receiving the College of Art's Diploma at age sixteen, he was then urged by his Architectural Design professor to pursue studies in Architecture. His formal training in Architecture at the Universita' Statale di Architettura also includes Interior Design, Architectural Landscaping, Industrial Design, and Urban Evolution and Development . His studies include the architectural theories of S. Muratori and the design approach of F. Purini, he also met many prominent Italian architects as professors.

  His work in Italy also includes interior design projects, the fitting-out of a number of residences, and the design of a private art gallery. While working at S. Giannini Jr's Architectural Studio, he also participated in set and stage design for a TV station. After traveling to Toronto, Rosario cooperated with local and international recognized architects and designers. He has worked on several high profile projects with the architectural firm B+H. Some of these projects included The Consilium in Scarborough and at Toronto's Pearson International Airport Terminal 3. Rosario has also been part of the projects like the headquarters of Canadian Broadcasting Corporation by Philip Johnson, a new addition to the TD Centre Towers by Ludwig Mies Van Der Rohe, the BCE Place Towers by Skidmore Owings and Merrill with the Santiago Calatrava's Galleria, and a residential building project by Ricardo Bofill.

  His prolific career ranges from one-off special edition pieces to interiors for private residences, offices and restaurants. His designs of sofas and plastic products have been mass-produced by International manufacturers and are currently available in several department stores across North America. His design career spans almost three decades, graciously avoiding the spotlight.