In 1927 he graduated from the Drama Studio theatre school. 1922-1925 he was a choir singer at Estonia Theatre. 1925–1927 he played at Estonian Drama Studio Theatre, and 1927–1928 in Endla Theatre. 1932-1933 he was the head of Ugala Theatre. 1948-1951 he was the head of Estonian Theatre and Music Museum. Besides theatre roles he played also in several films.
- 1960: Näitleja Joller (television feature film)
- 1961: Laulu sõber (feature film)
- 1968: Libahunt (feature film)
- "Soosõrv, Valter - Eesti Entsüklopeedia". etbl.teatriliit.ee. Retrieved 16 June 2021.