About me

I am currently working at Castell Health since April 2023 as a Senior Data Scientist as a part of the Data Science team.

I worked at Happiest Baby, Inc. from June 2022 to November 2022 as a Data Scientist in the AI team. As a Data Scientist, I worked on a project for predicting customer retention using state-of-the-art machine learning and deep learning techniques. I also worked on a research project that models infant sleep for better representing and measuring the quality of sleep using massive sleep logs. Collaborating with a marketing team and health researchers, I demonstrated data-driven insights on the outstanding performance of our company’s products using statistical inferences.

Before joining the company, I pursued a Ph.D. degree in Informatics at the University of Iowa. My academic advisor was Dr. Kang Zhao from the Department of Business Analytics. My research focused on data mining in social/business networks. Specifically, I proposed a novel Graph Neural Network model that predicts team performance in collaborative settings using the nature of team structures. I also collaborated with professors and students with medical and pharmaceutical backgrounds. I analyzed the medical claims dataset to optimize treatment for heart attack patients using predictive modeling and provided data-driven insights for possible risk factors for genetic diseases.


🏢 Senior Data Scientist | Castell Health
04/2023 - Current

🏢 Data Scientist | Happiest Baby, Inc.
06/2022 - 11/2022

🏢 Statistical Consultant & Instructor | Iowa Social Science Research Center
08/2019 - 05/2022

🏢 Graduate Research Assistant | University of Iowa
08/2017 - 05/2021


🎓 Ph.D. in Informatics, University of Iowa, 2022
🎓 B.S. in Computer Science and Engineering, Handong Global University (South Korea), 2017


Data science
Machine learning
Deep learning
Graph mining
Data analysis
Predictive modeling
Statistical modeling
Data visualization
Database design