With 20 years of experience in various fields, from semiconductor engineering, to electricity demand forecasting, to AI and ML domains, he has worked in both the private and public sectors. His expertise has helped many companies to smoothly undergo the digitisation process, opening them up to opportunities for scaling.

Leslie also conducts data science audits and consultations for various companies and has participated in the development of courses for the Singapore University of Social Sciences and Murdoch University, Australia.

Leslie currently heads a subsidiary of Eight Mercatus — Nunc Tech, a data science development and consultancy company. Leslie was also previously a top-rated Ebay UK platinum power-seller for a consistent period of 4 years.