After a career in banking as a quant and equity derivatives trader in Paris, London and New York, with several bulge bracket investment banks, Jocelin was called to the Bar in 2009 and started practising upon completion of his PhD in 2011. Jocelin has appeared at all levels of the UK Courts, including the Supreme Court and Court of Appeal, and is regularly instructed in insurance, and particularly reinsurance, matters. Given his past experience in banking and background in mathematics and mathematical finance, Jocelin is also routinely involved in finance matters, particularly those that relate to complex financial structures or products.