He currently plays for SD Laredo, wearing the number 8 shirt. He plays primarily as a Midfield. His current market value is estimated at 25K €.

His most recent move was a from UD Sámano to SD Laredo on 2022-06-30.

Across 28 appearances in the Spanish Segunda División RFEF 2024-2025, Jon Sanmillán registered 1 goals and 0 assists, while completing 0 key passes out of 0 total passes with a passing accuracy of -.