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In 1996, Marino designed a freestanding boutique on New York City's Madison Avenue for Giorgio Armani. Marino's work for Barneys put him in contact with other fashion designers for whom he went on to design boutiques, such as Calvin Klein, Donna Karan, Giorgio Armani, Ermenegildo Zegna and Fendi, and eventually Chanel, Dior and Louis Vuitton. This was Marino’s first retail project, which led to his designing 17 freestanding Barneys department stores in the U.S. In 1985, the Pressman family, who owned Barneys New York at the time, hired Marino to design the women's retail concept for the department store. His work for Warhol led to residential commissions from clients in the art world as well as the European aristocracy.
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In 1978, Andy Warhol hired him to do a renovation project for his townhouse on the Upper East Side of Manhattan and the third incarnation of Warhol's Factory at 860 Broadway. Marino began his architectural career working for Skidmore, Owings & Merrill, George Nelson, and I.M. Marino earned a degree from the Cornell University College of Architecture, Art, and Planning. Marino graduated from Francis Lewis High School in Fresh Meadows, New York City.
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