Bull received his Master of Laws degree in 1992, his Doctor of Laws degree in 1997, and his Associate Professorship in Public Law in 2000. He was a professor in constitutional law at Uppsala University from 2008 to 2012. He was nominated as a Justice of the Supreme Administrative Court in 2012, being sworn in on 1 January 2013. On 21 November 2024 he was nominated by the government to be the next Chancellor of Justice, succeeding Mari Heidenborg on 1 March 2025 and retiring from the Supreme Administrative Court.[1]
Bull has also been an expert in the constitutional inquiry's expert group for norm control, in the detention inquiry, the freedom of expression committee, and has been a special investigator of the Swedish Transport Agency's procurement of IT operations.[2]
