He also oversaw talent and casting operations for Disney Channel.
Marsh joined Disney Channel in July 1988 as executive director of Original Programming.
[citation needed] In 1999, he was promoted to Executive Vice President, and in 2001, Marsh assumed the role of Executive Vice President of Original Programming and Production at Disney Channel.
[citation needed] In 2005, he was promoted to President of Entertainment at Disney Channels Worldwide, and in 2009, he assumed the role of Chief Creative Officer at Disney Channels Worldwide before being promoted to President and Chief Creative Office at Disney Channels Worldwide in 2011.
[citation needed] In 2021, Marsh made an overall deal with Disney.