Jonathan Miller, chief digital officer of News Corp., is leaving the company at the end of September as he seeks a more hands-on role with a standalone firm.

The announcement comes as News Corp. prepares to split off its print businesses into a separate company from its TV and movie assets. News Corp. owns The Post.

Miller, formerly chief of AOL, joined News Corp. in April 2009. He oversaw the aborted relaunch of troubled social networking site Myspace, which was sold in June 2011.