Leonard Siu

Lead Senior Staff Software Engineer at The Trade Desk

Leonard Siu is an accomplished Lead Senior Staff Software Engineer at The Trade Desk, where responsibilities include leading a squad focused on measurement upper funnel partner integration, data pipelines, and the development of reach & frequency algorithms. Siu has a diverse background with previous roles including Lead Staff Software Engineer at Credit Suisse, where a team was led to enhance equity derivative products, and Software Engineer at Horizons Venture, which involved creating the first online Human Anatomy course for a medical school. Additional experience includes software architecture at MPayMe Limited, digital transformation in a family business, and consulting roles at Accenture and CGI Group, contributing to various high-profile projects across multiple industries. Siu holds a BASc in Engineering Science with a focus on Biomedical Engineering from the University of Toronto.

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The Trade Desk

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With The Trade Desk, buyers can value each impression like traders value stocks, using first and third party data to decide which impression to buy and how much to pay.


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