OUR TEAM

Tim K. Mackey, MAS, PhD

Dr. Mackey is the CEO and Co-Founder of S-3.  He is an internationally recognized expert on global health, technology, and policy.  His past work includes consulting for organizations including the World Health Organization, the U.S. Department of State and U.S. Department of Justice.

Jiawei Li, MS

Mr. Li is the Chief Technology Officer and holds a Masters in applied mathematics with an emphasis on machine learning.  He has advanced training and experience building machine learning-based solutions

Qing Xu, MAS

Ms. Xu is a Senior Analyst and is responsible for several online threat portfolios including drug diversion, public health, and wildlife trafficking.  She has worked for research and non-profit organizations in both China and the USA

Mingxiang Cai, MS

Mr. Cai is a Data Scientist for S-3 and holds a Masters degree in computer science and engineering with an emphasis on machine learning.  He is an expert in topic modeling, data wrangling and data visualization