Mr Leong is an international arbitration specialist with more than a decade of experience in complex cross border commercial disputes. He served in a judicial capacity as a Magistrate and Assistant Registrar of the Supreme Court for five years, where he published several notable written judgments on international arbitration law. Mr Leong was the Head of the Court of Appeal Section of the Supreme Court Registry, and was involved in the establishment of the Singapore International Commercial Court (SICC) as Secretariat of the SICC committee.