Career
Lakjuni started his career with KÍ Klaksvík and had spells with B36 Tórshavn, HB Tórshavn, and NSÍ Runavík. Since April 2015 he holds the record for most league appearances in the Faroe Islands Premier League. After making his debut for the Faroe Islands in 1999, Lakjuni has been capped for the team 16 times and scored once.
Lakjuni started his career with KÍ Klaksvík in 1995.
After playing in the club"s reserve teams, he made his first team debut against GÍ. Following the conclusion of the 2000 season with KÍ, Lakjuni transferred to B36 Tórshavn.
In the 2001 Faroese Cup final Lakjuni faced his former team, and created the opportunity that helped his teammate Jens Kristian Hansen score the match"s only goal. After one season with B36, Lakjuni returned to KÍ Klaksvík.
His second spell at KÍ was short.
After one season he signed for a second time with B36. On 29 December 2003 he signed for HB Tórshavn. After winning the 2004 league title with HB, Lakjuni returned to KÍ in October 2004.
He left KÍ for NSÍ Runavík in February 2010.
He made his debut for the club in a cup match against EB/Streymur. In January 2012 he returmed to KÍ to have his fourth spell with the club
In October 2014, Lakjuni was set to make his 400th appearance in the Faroe Islands Premier League. At the time he was the second only to Egil á Bø in appearances among active players.
In April 2015, by making his 408th appearance in the Faroe Islands Premier League, he surpassed Egil á Bø and set the record for most league appearances.
In May 2015, he scored his 100th goal in the top tier of Faroese football, helping his team get past Football Club Suðuroy 2–1 at home. Although he received his first call-up in the senior squad by Allan Simonsen in 1997, Lakjuni made his debut for the Faroe Islands in March 1999, in an away 0–0 friendly draw against Andorra. His competitive debut came almost six months later when he came in as a substitute for Henning Jarnskor in a Euro 2000 qualifiers match against Lithuania.
Totally he has appeared in 16 matches for the Faroe Islands.
International goals
Scores and results list Faroe Islands" goal tally first.