He was professor of international and constitutional law at the University of Cracow from 1903 to 1930, serving as rector in the 1925–1926 academic year.

From 1920 he wrote as a member of the Kodifizierungskommission after the First World War, newly formed Polish Republic, a number of bills.

He served as a delegate of Poland to the fifth and sixth sessions of the Hague Conference on Private International Law in 1925 and 1928, respectively.

He served multiple times on the Polish delegation to the meetings of the Assembly of the League of Nations.

In September 1930, he became a judge on the Permanent Court of International Justice, having served there on an ad hoc basis four times before.