He currently plays for BFC Daugavpils, wearing the number 23 shirt. He plays primarily as a Midfield.

His most recent move was a from Augšdaugavas NSS to Rezeknes FA on 2026-02-27.

Across 18 appearances in the Latvian 1.Liga 2025, Rainers buks registered 4 goals and 1 assists, while completing 0 key passes out of 0 total passes with a passing accuracy of -.