Early in his career, Heidelberger held entry-level or assistant positions at companies like Outlaw Productions, Film Roman and literary agency Ken Sherman & Associates.
[1] He executive-produced an independent dramedy feature called Cycles, served as a producer on award-winning NBA basketball docu-drama Flintown Kids, and also helped develop and package the indie thriller Don Mckay, starring Thomas Haden Church, Elisabeth Shue and Melissa Leo.
[2] Through Treasure Entertainment, where Heidelberger served as co-chairman and chief executive officer, he co-produced the gritty urban drama Harsh Times starring Christian Bale and Eva Longoria and a behind-the-scenes video documenting the making of the film.
[4] The following year, he produced the supernatural martial arts film Ninja Apocalypse, starring Cary-Hiroyuki Tagawa and Ernie Reyes, Jr., which premiered at San Diego’s Comic-Con in 2014.
In 2018, he worked on several feature documentary projects, including Lil Buck Renaissance for French director Louis Wallecan and Somewhere in the Middle for longtime collaborator Nathan Ives.