Alexander's first professional performance was on stage at the age of 11 in
New York City at the
Public Theater in the musical
Bloody Bloody Andrew Jackson. He then went on to perform in the
Broadway national tour of
Billy Elliot the Musical. He has had several episodic roles on television. His first film role was in 2013's summer indie hit
The Way, Way Back in the role of Peter. He was also in
Boychoir, which was released in 2015. ==Filmography==