Advocate, professor at University College London.

He was a researcher at the College of St. Katarzyna in Cambridge (1984/88), Kings College London (1988/91), New York University School of Law (1994-2003) and at the School of Oriental and African Studies (1989-2002) He founded the Foundation for International Environmental Law and Development . Since 2002, he has been the professor and director of the Center on International Courts and Tribunals at University College in London. After almost twenty years of legal practice and scientific activity, in 2003 he became a Barrister (Queens Counsel). He has been a member of Middle Temple (one of four Inns) since 2009. He represents Macedonia in a case against Greece regarding the naming of a state - in a dispute before the International Court of Justice.

In 2012, at the invitation of the Allerhand Institute, prof. In Krakow and Warsaw, Sands gave a lecture on the contribution of Polish lawyers Rafał Lemkin, Hersch Lauterpacht and Ludwik Sohn to the development of international criminal law. In the same year, he published an article on the above subject in the "Palester". Grandfather of prof. Sands came from Poland.