Raja Gosnell started his film career as an assistant editor in the late 1970s. His first credit as a film's main editor was the romantic comedy "The Lonely Guy" (1984),directed by Arthur Hiller.
During the 1980s, Gosnell served as editor in films directed by Tom Laughlin, David Worth, Bob Dahlin, Bert Convy, Christopher Leitch, Annabel Jankel, Rocky Morton, Phillip Schuman, and Chris Columbus. For Columbus, he edited the comedy film "Heartbreak Hotel" (1988),which features a 1970s teenager kidnapping singer Elvis Presley, to bring home as a gift for his mother.
The 1990s started with Gosnell working as editor in two high-profile projects: "Pretty Woman" (1990) by Garry Marshall, and "Home Alone" (1990) by Chris Columbus. Both turned out to be among the major hits of the year 1990. He then worked in the Columbus' films "Only the Lonely" (1991),"Home Alone 2: Lost in New York" (1992),"Mrs. Doubtfire" (1993),and "Nine Months" (1995).
Gosnell resurfaced as a film director in his own right, hired to direct "Home Alone 3" (1997). The film was intended to continue the "Home Alone" franchise with a new set of characters and no connection to the events of the previous films. The film was a minor box office hit, and the series next continued with a television film.