Born in Gothenburg, Bertil Söderberg played handboll in Västra Frölunda IF from 1965 to 1973. In 1970 the club advanced to the highest Swedishleague. After two years in "Allsvenskan" he shifted club to IFK Lidingö where he played for five or six seasons. He changed club to SOIK Hellas but only for two seasons. His last club were GF Kroppskultur.