Grace Bartlett signed a youth development deal with the Wellington Phoenix in December 2025 and  was rewarded with her A-League debut soon afterwards, appearing as a substitute in a 7-0 thrashing of Sydney FC. She arrived at Posh from Auckland in New Zealand in September 2026 and has already made a positive impact on the side, operating as a left-wing back for Jake Poole's side. 

Bartlett has been a regular in New Zealand age-group teams, representing the Football Ferns up to the Under 20s and joined the club after playing in the Under 20s World Cup in Poland.