Tamaki Stiles


Tamaki Stiles is the Financial Analysis and Data Management Adviser for Leaders in Energy. She has over 10 years of experience in financial and business analysis roles, in the U.S., Canada, and Japan. Her experience includes financial models, budgets, economic analysis, and market research. She has served as an analytic role at companies such as ExxonMobil, TD Bank, and Toyota, where she has helped employers prioritize strategic initiatives and improve the accuracy of forecasts. Her work has included analysis of Asian markets for a Japanese think-tank, for businesses looking to expand. She holds a Masters degree in Economics (Macro) from the University of Waterloo, and another Masters in Economics (Labor market policy) from the University of Tokyo.


Building a model to support great business decisions.  When I was at ExxonMobil, I developed a cost and revenue model that allowed me or anyone to easily just plug in different assumptions and quickly develop scenario forecasts based on those assumptions.  Also, I assessed return on investment in strategic initiatives around the globe using criteria such as NPV, cost, revenue, the number of people required, and so forth.