[2] Helgi joined SSV Ulm 1846 for the 2000–01 campaign, before returning to Austria with FC Kärnten, where he made 77 appearances and scored five goals in three seasons.

[2] During the 1993 season, Helgi won two caps for the Iceland under-21 team, making his debut as a second-half substitute for Þórður Guðjónsson in the 2–1 win against Hungary on 15 June 1993.

Three years later, he won his first senior international cap for Iceland, replacing Ólafur Þórðarson in the 0–3 away defeat to Russia on 9 February 1996.

Over the next seven years, Helgi played a further 28 matches for his country before making his final appearance in the 0–0 friendly draw with Mexico on 20 November 2003.

[4] After the dismissal of Michael Feichtenbeiner in April 2008, he briefly took over as caretaker manager, but couldn't continue with the team after the season as he lacked a UEFA 'A' licence.