Concache began playing rugby at CSM Suceva where his father coached at the time.[2]
RC Gura Humorului
In 2016 he joined RC Gura Humorului where he won three national champion titles at Under 15, Under 16 and Under 17 levels. He made his debut for the senior side in 2020 making 8 appearances before being signed by Liga Națională de Rugby side SCM Rugby Timișoara.[3] French side USA Perpignan offered him a contract after he had a three-week trial there however he declined.
SCM Rugby Timișoara
Concache made 11 appearances in his first season, debuting against his former club RC Gura Humorului. In the next season he went on the score 39 points in only 9 appearances.[1]