Claudia initially joined Birmingham on loan from Everton from January 2019 until May 2019. Claudia then joined Blues on a two year contract in July 2019.
In February 2015, Walker signed for the recently relegated Merseyside rivals, Everton of the WSL 2.
Claudia was in the youth team with Stoke City and then joined Liverpool and was part of the squad which won the WSL title in 2014.