At the professional club level, he plays for Berlin Recycling Volleys.

[1] Timo Tammemaa began his professional career in 2009, when he signed a contract with the Estonian team, Selver Tallinn.

In 2014, he moved to Pärnu alongside his coach, Avo Keel, and his teammate Hindrek Pulk.

[5] In July 2019, he signed a contract with the top French team, Tours VB.

[8] As a member of the senior Estonian national volleyball team, Tammemaa competed at the 2015, 2017, 2019, 2021 and 2023 European Championships.