Jan-Eric Rune Nilsson was born on May 20, 1964 in Göteborg and made his IFK Göteborg debut in the 1982 season. Nilsson was part of IFK Göteborg's youth program before making his debute with the first team, and is as a result of that regarded by the club as a home-grown player. At 19 years, 0 months and 26 days, on June 16, 1983, he took part his first competetive game against BK Häcken in an Allsvenskan game that ended 5–0. He has spent two seasons with the IFK Göteborgs first team, and during his career he played in 14 first team games and scored 1 goals. Out of these 14 first team games, 2 were Allsvenskan games.
Jan-Erik Nilsson is with his 2 Allsvenskan games number
437 on the list of those who have competed in most Allsvenskan games for IFK Göteborg. Nilsson won the Swedish championship with IFK Göteborg in 1983. In the 1982/83 season he had a part in IFK Göteborg winning the Swedish Cup. 56 year old Nilsson completed his last season with IFK Göteborg 1983.