Sam has practiced litigation in New Zealand and England and was a Judges’ Clerk at the High Court of New Zealand. He is a Fellow of the Higher Education Academy and President of the HLS SJD Association. Sam previously served as Vice Chair of the New Zealand Law Society: Auckland Young Lawyers Committee. He is a former Editor-in-Chief of the Auckland University Law Review and Dept. Executive Editor of the Harvard National Security Journal.

Sam's papers have appeared in the Oxford Journal of Legal Studies, the Supreme Court Law Review, the University of Pennsylvania Law Review Online and the New Zealand Law Review (among others). His doctoral thesis critiques the limitation principle of discoverability as it has been invoked by common law courts to claims in mistake of law.