Markus Sossi is a 25-year-old professional football player from EST. He currently plays for JK Welco Elekter, wearing the number 4 shirt. He plays primarily as a Defender. His preferred foot is Right.

His most recent move was a from Tartu JK Welco II to JK Welco Elekter on 2022-01-01.

Throughout the Estonian Esiliiga 2025, Markus Sossi featured in 33 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.