He plays as a flanker for professional SuperLiga club Steaua București.

[2] Ser played for CSM București and then transferred to Steaua in 2019 following the dissolution of his former club.

He also played for the Romania national under-20 rugby union team.

[3] Ser was selected for Romania's national team, the Oaks, making his international debut during Week 1 of 2020 Rugby Europe Championship against the Lelos on 1 February 2020.

This biographical article relating to Romanian rugby union is a stub.