Leon is an associate in the Paris office. Before joining Three Crowns, Leon practised in the disputes team of an international law firm in Perth, and previously clerked for a judge of the Supreme Court in Western Australia. His experience covers energy and resources, finance, and insolvency related arbitration and litigation.

Leon is admitted in Australia and New York. He is a graduate of Harvard Law School and the University of Western Australia Law School, where he remains an Honorary Fellow. He is an editor of the book Long Term Contracts (2013). In addition to his background in Australia, Leon has done pro bono work in South East Asia.