Josh Greenstein and Dana Goldberg get Warner Bros. task

Josh Greenstein and Dana Goldberg are set to lead Warner Bros. and Paramount after the companies formally merge this week. Their job is a big one: oversee both film studios and help deliver 30 theatrical movies a year.

Neither executive has run a studio at this scale before, but both have strong support inside the business. Greenstein is known for smart marketing and efficient spending. Goldberg is seen as a strong creative partner with good relationships in the industry.

At Paramount, they raised film output and helped line up projects like a new G.I. Joe movie, a Call of Duty film, and new takes on Paranormal Activity and Days of Thunder. They also have to manage a much bigger challenge now, including merging two studio cultures and handling a deep slate of films already in motion.

They will also have to deal with layoffs, debt tied to the merger, and a Warner Bros. team that has gone through several corporate shake-ups in recent years. The two executives now face pressure to keep both studios moving while delivering hits.