Ronald Bronstein

Biography

Ronald Bronstein is an American filmmaker, screenwriter, editor, and actor, best known for his long-standing collaboration with the Safdie brothers — Josh and Benny Safdie. Together, they have created some of the most acclaimed and intense films in contemporary independent cinema.

Originally from New York City, Bronstein developed a passion for film at a young age, particularly drawn to character-driven stories and raw emotional realism. Before gaining recognition as a writer and editor, he began his career as an independent filmmaker, earning critical acclaim for his debut feature.

Career

Ronald Bronstein first gained attention in the independent film world with his directorial debut, Frownland (2007). The film, which he also wrote and edited, follows a socially awkward man struggling through the harsh realities of life in New York City. Frownland won the Gotham Award for Best Film Not Playing at a Theater Near You and was celebrated for its uncompromising vision, naturalistic performances, and unflinching portrayal of loneliness.

Following Frownland, Bronstein became a key creative collaborator with the Safdie brothers, contributing as a co-writer and editor on several of their acclaimed films. His partnership with them has been integral to shaping their signature style — fast-paced, emotionally charged, and steeped in realism.

Bronstein co-wrote and edited:

Daddy Longlegs (2009) – a semi-autobiographical family drama.

Heaven Knows What (2014) – a raw, haunting look at addiction and survival.

Good Time (2017) – starring Robert Pattinson, praised for its tense and frenetic storytelling.

Uncut Gems (2019) – starring Adam Sandler, an electrifying crime drama that earned widespread critical acclaim and became a cultural landmark.

His editing work, known for its rhythmic pacing, psychological intensity, and immersive energy, has become a defining feature of the Safdie brothers’ films.