Born on the 20th February 1979 in Hovmantorp, Sweden, Johan Sandahl, a UEFA Pro Licensed coach, started his coaching career in 2011 as head coach of Swedish third division side Dalkurd. Between 2013 and 2015, he served as sporting director and head coach of Umeå FC, also in the third division, for nearly three years, before returning to Dalkurd as head coach in 2016. In 2017, he was assistant coach at second division Vejle BK, after which he worked as head coach of the club's U19 team for six months before returning to Dalkurd as head coach. He was again assistant coach at Vejle BK from March 2019 to June 2021, after which he worked as the club's technical director until February 2023. Last half season he managed Vejle U19 team.