[1] He is known for his legal work on public finance,[2][3] German colonial history[4] and armed conflicts.
[8] In 2015, he received the Freigeist-Fellowship from the Volkswagen Foundation;[9] the prestigious fellowship awarded over 500.000 € for a five-year research project.
[8][10] Goldmann stated in 2022 to Tagesschau that the legal status of the 200 billion euro "Doppelwums", a government action to reduce the impact of rising energy cost, was likely to assessed by European Commission, with the outcome being unclear.
[11] He stated that Eurobonds issued by Mozambique would be impacted by the state guarantees for them were found illegal by its constitutional court,[2] arguing that the replacements of the bonds in 2016 had not resolved the question of the bonds validity.
[3] He has stated that some of the German attempts to avoid accepting responsibility for its colonial past were motivated by a “grave concern that this would give rise to a rule.”[4] He defended the transfer of a returned Benin Bronzes to the Oba of Benin by the Nigerian Government, stating that the Oba was the current leader of the group from which it was originally stolen, and that a return to him was therefore appropriate from a human rights perspective.