He is on the books of Hafnarfjordur Women and wears shirt number 7. At international level, he features for Bermuda Women. His main role on the pitch is Forward.

During the FIFA Women's World Cup qualification(CONCACAF) 2026 campaign, nia christopher made 3 appearances, scoring 1 goals and adding 0 assists. He averaged 0.3 goals per match from 10 shots, with 4 on target.