Born in Norway on 2 October 1991, Sivert Heltne Nilsen is a proficient midfielder who generally occupies a central defensive position for Aberdeen. Standing 6ft (1.84m) tall and weighing 12st 3lb (78kg), he sports the number 6 jersey.
According to Transfermarkt, his present market value circulates around £200,000.
In January 2009, Heltne Nilsen commenced his career with Hødd in OBOS-ligaen, Norway. He then moved to Valerenga in the Eliteserien in January 2014, where his debut season witnessed 28 first-team league appearances. His second season at Valerenga was marked by 13 first-team league appearances.
Nilsen transferred to Brann, still in the Eliteserien in July 2015, for an undisclosed fee. During his tenure with Brann, from 2015 to 2018; and then again from 2021 to 2024, he showcased impressive performances in the league matches, with notable goals scored in the 2023 season, where he found the net nine times.
Departing from Brann in July 2018, Nilsen took up a new challenge with AC Horsens in the Danish 1. Division. His first season saw 22 first team appearances and a solitary goal. His stay was short-lived, however, with a subsequent move to IF Elfsborg in the Allsvenskan in Sweden in August 2019. During his tenure at IF Elfsborg, Heltne Nilsen scored a total of two goals over two seasons.
In January 2021, Nilsen's career path took another turn as he moved to Waasland-Beveren in the Derde Klasse in Belgium, with a transfer fee of approximately £400,000. His single season there witnessed nine first team league appearances.
In August 2021, Nilsen returned to his old club, Brann, where his performance remained steady. His time back at Brann culminated in a transfer to Aberdeen in the Premiership here in Scotland in July 2024, with the move rumoured to be around £300,000.
Since his arrival at Aberdeen, Heltne Nilsen has maintained a solid performance. The current season (2025-2026) has seen him make 13 first team appearances, with one goal to his name. He also participated in the League Cup, Scottish Cup, Europa League Qualifiers, and the Conference League, making noteworthy contributions for Aberdeen in each tournament.
