Left-footed full-back Christian Scales joined Norwich as an academy scholar in the summer of 2013, after being a regular in the Under-16s during 2012/13. He made 3 appearances for the Under-18s during 2012/13.

He switched to Crystal Palace during the 2014/15 season and signed his first professional contract with the Eagles at the end of April 2015.

He joined Crawley on loan on 20th August 2015 until January 2016 and made his debut on 22nd August in a 3-0 win over Cambridge. He made nine appearances in total for Crawley.

Scales was released by Palace on 6th May 2016. He spent some of the 2016/17 season with Conference South side Whitehawk.

Scales signed for Leyton Orient on 13th July 2017. He joined Harlow on a month's loan on 26th August 2017. He returned to Harlow on loan in early 2018

In December 2018, Scales joined Swedish Division 2 side Skellefteå on a two-year deal