At the 2010 Summer Youth Olympics held in Singapore, Jacobsson placed joint fourth in the final of the boys' pole vault with a jump of 4.85 metres.

[3] In autumn 2014 Jacobsson underwent surgery on both his hips to correct an issue that had caused him pain since the age of ten.

In January 2015 German surgeon Hans-Wilhelm Müller-Wohlfahrt, who had previously operated on other athletes including Usain Bolt, Sanna Kallur and Christian Olsson, as well as U2 singer Bono, identified the issue and carried out a second surgery.

[5][6] He met the standard by setting a new personal best of exactly 5.70 metres at an event in Austin, Texas, United States.

[7] He has also surpassed the qualification standard of 5.55 metres needed to compete at the 2016 European Athletics Championships due to be held in Amsterdam, Netherlands.