He plays as a wing or full-back for professional Liga Națională de Rugby club CSM Baia Mare.
Paul started playing rugby at the age of 12, evolving between 2012 and 2014 under the guidance of Ioan Hău.
With the CSS2 Baia Mare team led by coaches Răzvan Popovici and Mircea Taloș, he won the national championship title in rugby (Under 16).
[2][3] In August 2019 he started his professional journey joining SuperLiga side, CSM Baia Mare.
Popoaia is also selected for Romania's national team, the Oaks, making his international debut during Round 2 of 2021 Rugby Europe Championship in a test match against the Os Lobos.