Jakob Ahlmann Nielsen

Early career

Ahlmann started playing football in the youth of Brønderslev IF. As a 13-year-old, he was discovered by AaB and joined the club's youth department. In 2006, two years after his transfer to AaB, however, he moved to FC Midtjylland, to play for their youth academy. Regarding his move to Midtjylland, Ahlmann stated in an interview with Nordjyske in May 2008 that: "Now this is my job. But I don't see it as a real job, despite being paid for it. That's what I like. But it's become a lot more serious, and it's not always fun. It requires a lot of practice."

AaB

In August 2009, AaB signed Ahlmann from Midtjylland on a professional contract. He made his Superliga debut for AaB under head coach Magnus Pehrsson when he came on as a substitute on 16 May 2010, in the last match of the season, with 29 minutes left to play in a match against HB Køge. His debut match ended in a 0–0 draw, and was his only match in the 2009–10 Superliga. He suffered a groin injury which kept him out for a substantial period of time following his debut. He did not make any Superliga appearances during the 2010–11 season as a result.

At the beginning of the 2011–12 season, Ahlmann was again included in the first team, where Patrick Kristensen had played in the same position. Lucho had also been brought to the club in the summer transfer window, who could also play left back. Ahlmann made 17 appearances that season, of which 14 matches were full games. At the end of the 2011–12…

Ahlmann has played on various Danish youth national teams. As an under-18 national team player, Ahlmann gained eight caps, which was the national youth team he performed for the most times in his career. He has appeared once for the U21 team when they played against Turkey in a friendly match. The day after AaB won the Superliga, on 12 May 2014, Ahlmann was called up for the Denmark senior team for the first time by national coach Morten Olsen for the matches against Hungary and Sweden, along with fellow AaB players Kasper Kusk, Rasmus Würtz and Nicolaj Thomsen. The debut for the national team came in the match against Hungary on 22 May 2014, where he played from the start. His debut match ended 2–2, on Danish goals scored by Christian Eriksen and Lasse Schöne. After failing to make an appearance for the national team for six years, Ahlmann returned in action in November 2020, where he came on as a late substitute in a friendly against Sweden.

Ahlmann was born in Brønderslev, approximately 38 kilometers north of Aalborg. He has a younger brother, Viktor Ahlmann, who has also played for AaB. Furthermore, he is the cousin of Michael Sten Jensen, who also had a short stint with AaB. After Ahlmann moved from Midtjylland to AaB, they played together for a period until Jensen moved to Ventura County Fusion. Jensen later became a sports journalist for DR.

AaB

Danish Superliga: 2013–14 Danish Cup: 2013–14