In Milan, Mucchi worked as an architect and interior designer for several companies, including La Rinascente, one of Italy's most famous department stores. He also became a founding member of the MIAR group, which promoted modern, functional design in Italy in the 1930s.
Throughout his career, Mucchi worked with materials such as metal, glass and wood, creating furniture, lamps and decorative objects. He was influenced by the Art Deco movement and developed a style that combined elegance and simplicity.
In addition to his design achievements, Mucchi was also an accomplished artist, working in painting and sculpture. He participated in many art exhibitions and was honored with numerous awards for his work in design.
Gabriele Mucchi died in Milan in 2002, leaving behind him an important legacy in the world of Italian design.