Leslie is a PhD from University College London. He previously worked in Credit Suisse, and as consultant to Bank of America, Commerzbank, GMEX Group, Santander, Microsoft, Orange AI Labs on AI automation. His PhD focused in Graph Theory with applications on Machine Learning in Financial Mathematics and Big Data. In addition, he holds Bachelor and Masters degrees in Mathematics from Warwick, London School of Economics and Political Science and University College London. His expertise is in Graph Theory and Semi-Supervised learning, the latter being a machine learning subset within Artificial Intelligence. He has also co-authored a number of internal research reports for Credit Suisse in derivative pricing methods, news recommendation engine, prediction Analysis using ML in Big Data, and formulated a new options pricing scheme for GMEX.