Siim Aer is a 25-year-old professional football player from EST. He currently plays for Parnu JK Vaprus, wearing the number 5 shirt. He plays primarily as a Defender. His preferred foot is Right. His current market value is estimated at 50K €.

His most recent move was a Free from Paide Linnameeskond to Parnu JK Vaprus on 2025-01-02.

Throughout the Estonian Premium Liiga 2025, Siim Aer featured in 35 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.