Background
Jensen was born in Hillerød, Denmark, he began his youth career at Hillerød GI before going on to F.C. Nordsjælland where he has played since he was 13 years old, signing his first contract with the club at age 16.
Jensen was born in Hillerød, Denmark, he began his youth career at Hillerød GI before going on to F.C. Nordsjælland where he has played since he was 13 years old, signing his first contract with the club at age 16.
He plays as a goalkeeper for F.C. Nordsjælland in the Danish Superliga. Jensen has amassed a total 27 youth caps for Denmark under five different age groups. He would later go on trial with Celtic, but decided against a move to the Scottish club stating that though moving to a large foreign club would be a dream move, moving at 16 years of age was too young and that staying at FCN would be better for his development.
F.C. Nordsjælland
David Jensen was promoted to reserve goalkeeper as backup to first choice Jesper Hansen in 2010.
On 2 August 2011, he signed a new contract with FCN, keeping him at the club until 2014. David Jensen would go on to make his Superliga debut on 24 September, coming on as a 44th-minute substitute for the injured Jesper Hansen, in a 1-0 loss to AGF. He is expected to be out of action anywhere between 4 to 6 weeks.
On 31 August 2011, Jensen made his senior debut in goal against hometown team Hillerød Fodbold in the second round of the Danish Cup, keeping a clean sheet with a 5-0 win. He would play his second match for the senior team in the following round of the Danish Cup on 21 September, in a 2-0 win over 1st Division side Football Club Hjørring. He would make his first league start on 2 October, in a 1-0 win over SønderjyskE, but had to come off at half time because of an injury to his knees from a collision with another player. Jensen was part of the Danish under-20 team that won the 2011 Milk Cup in Northern Ireland.