He played professionally in England, Sweden, Germany, Portugal, Iceland, and Denmark during a career that spanned between 1998 and 2021.

As of 2022, Helgi is pursuing a Ph.D degree in radiochemistry at the University of Cambridge In 2006, he left Fylkir who he had joined from Peterborough United for £25,000 in 2003, to go to Sweden to play for Östers IF in Allsvenskan.

After just a few months in the German side, he signed a deal with reigning Swedish champions AIK.

[4] A defensive midfielder, Helgi has played for the Iceland national football team at youth and senior level.

A predominantly defensive midfielder with excellent ball winning and positioning abilIty.