Collaboration with the Safdie Brothers
Bronstein first met the Safdie Brothers at the 2007 SXSW Film Festival. Josh was struck by a speech Bronstein had made at the awards ceremony about anti-careerism and was introduced to him afterwards. [11] They shared a mutual interest for documentary-like fictions and in filmmaking as a behavioral experiment. [12]
In 2009, he began his creative partnership with the Safdie brothers with the film Daddy Longlegs . He co-wrote, edited and also appeared in the film as an actor. He won a Gotham Award for Breakthrough Actor.
In 2014, he co-wrote and co-edited Heaven Knows What .
In 2017, he co-wrote and co-edited the film Good Time starring Robert Pattinson.
In 2019, he co-wrote and co-edited Uncut Gems starring Adam Sandler. The development and writing process was over 10 years, involving 160 drafts. [2] He won an Independent Spirit Award for best editing, sharing the award with Benny Safdie.
After the Safdie Brothers ended their directing partnership in 2024, he continued to collaborate with the Safdies on individual projects. He is a co-writer, editor and producer for Josh Safdie's Marty Supreme starring Timothee Chalamet. [13] It released on December 25, 2025 by A24.
Bronstein formed Central Pictures, a production company alongside Josh Safdie and Eli Bush in 2024. [14] He is also a partner in Elara Pictures with the Safdie brothers. [15]
