Starting his career with BK Forward in 1993, he went on to represent Lyngby FC, Degerfors IF, Derby County, AIK, and Raufoss IL before retiring at IFK Göteborg in 2003.
Rahmberg started his career at hometown club BK Forward, which were in the second tier and coached by Benny Lennartsson.
[3] He had further appearances with the reserve side including a match where a clearance from the field went right into the front window of his car in the parking lot, smashing it.
[4] Rahmberg returned to Degerfors in the same year, but could not avoid the team's relegation from the Allsvenkan having scored a single goal in the campaign and missing matches due to injury.
He suffered a herniated disc early in the 2003 season after falling down after a challenge, failed to recover and decided to retire from professional football.