John Lei
About John Lei
John Lei serves as the Vice President of Data Science and Analytics at Vesta Corporation, where he specializes in advanced machine learning techniques and has developed significant systems for fraud detection. He holds a Bachelor's degree in Computer Science from the University of Electronic Science and Technology of China and a Master's degree in Computer Science from the University of New Brunswick.
Current Role at Vesta
John Lei serves as the Vice President of Data Science and Analytics at Vesta Corporation. He has held this position since 2012, contributing to the company's strategic direction in data-driven decision-making. His responsibilities include overseeing advanced analytics initiatives and leading teams to develop innovative solutions in data science.
Previous Experience at Vesta
Prior to his current role, John Lei worked at Vesta Corporation in various capacities. He served as a Senior Analytic Scientist from 2004 to 2009, where he focused on developing analytical models. He then transitioned to the role of Director of Risk Management from 2009 to 2012, where he was responsible for risk assessment and management strategies.
Education and Expertise
John Lei holds a Bachelor's degree in Computer Science from the University of Electronic Science and Technology of China. He furthered his education by obtaining a Master of Computer Science from the University of New Brunswick. Additionally, he earned a Master of Arts in Economics from Guangxi University. His expertise includes advanced Machine Learning techniques, specifically Graph Neural Networks (GNN) and Generative Adversarial Networks (GAN).
Technical Skills and Proficiencies
John Lei is proficient in a variety of programming languages, including Python, SQL, Spark, JavaScript, SAS, Java, and C++/C. He has experience with multiple databases such as MS SQL, Databricks, MongoDB, and MySQL. His technical skills extend to designing data warehouses and OLTP data modeling, particularly for risk management applications.
Professional Contributions and Leadership
John Lei has actively contributed to the field of data science through various leadership roles. He chaired the Data Competition Committee for the IEEE Computational Intelligence Society in 2019 and for IEEE Machine Learning for Signal Processing in 2013. He also served as a reviewer for the IEEE World Congress on Computational Intelligence in 2014. His work includes developing an end-to-end Machine Learning platform and model auto-refresh system for fraud detection at Vesta Corporation.