Gindi was born to a Syrian,[1][2] Sephardic Jewish family.[3][4] His father died when he was nine.[3] At the age of 14, he opened his first retail store and in the 1950s, he opened a children's clothing store.[3] In 1959, leveraging his retail experience, he partnered with Alfred Sutton and Morris Sutton,[5][6] he opened the Lolly Togs children's wear business which was the first importer to do business with Hong Kong.[3] Lolly Togs changed its name to the LT Apparel Group[7] in 2007.[5] In 1961, he partnered with fellow Sephardic community member and cousin Al Gindi and opened the Century 21 department store[3][8] on Courtland Street in Manhattan.[9] At the time of his death, Century 21 had expanded throughout the New York metropolitan area with locations in Westbury, New York, Rego Park, Queens, the Upper West Side of Manhattan, Morristown, New Jersey, Paramus, New Jersey, and on Fulton Street in Brooklyn.[3] Al Gindi's son, Raymond Gindi, serves as Century 21's Chief Operating Officer[10][11] while Sonny Gindi's son, Isaac Gindi serves as its Chief Executive Officer[12] and his son Eddie Gindi, its Executive Vice President.[13][14]