Seohyun Choi
Data Analyst
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolSeohyun Choi is a data analyst with 8 years’ experience applying machine learning and deep learning to product and credit-risk problems across fintech and banking. At Viva Republica (Toss) she has driven measurable business impact—boosting credit inquiry revenue, BNPL adoption, and MAU through data-driven experiments and models—after optimizing credit policies at Standard Chartered. Her background includes hands-on ML research at Kakao (improving recommender NDCG by ~10%) and internships where she improved predictive F1 scores substantially in banking and logistics contexts. Comfortable bridging analytics and production ML, she blends rigorous feature engineering for time-series and contextual bandit approaches with a product-first mindset. Based in Seoul, she pairs a Business/Data Science degree with practical experience tuning models under real-world constraints to deliver commercial outcomes.
8 years of coding experience
Bachelor's degree, Business, Data Science, Bachelor's degree, Business, Data Science at University of SeoulBusiness, Business at University of Calgary
English, Korean
Github Skills (7)
morphology6
korean-nlp5
text-mining5
nlp4
python4
language-processing3
natural-language-processing2
Programming languages (1)
Github contributions (5)
seohyunchoi123/Fall-Down_Detection
Aug 2018 - Dec 2018
Contributions:8 commits, 8 pushes, 1 branch in 4 months
seohyunchoi123/Kaggle
Feb 2020 - Mar 2021
Contributions:34 commits, 34 pushes, 1 branch in 1 year 1 month
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