Youngjae Jang
Data Analyst
Seoul, South Korea
Summary
🤩
Rockstar🎓
Top SchoolYoungjae Jang is a data leader and Ph.D. graduate from KAIST with nine years of experience turning complex data into business impact across startups and scale-ups. Currently leading data analytics at Toss, he has built end-to-end analytics stacks, standardized KPI layers (Bronze/Silver/Gold), and produced executive dashboards that bridge product, marketing, and finance. His background blends rigorous causal inference and experiment design with practical ML and automation—examples include MMM work using Meta's Robyn and R Shiny tooling for company-wide insight delivery. He has steered pricing, recommendation, and token-economy designs that meaningfully improved unit economics and supported fundraising through scenario-driven planning. Known for operationalizing analytics (automated metric pipelines and OKR-aligned economic models), he moves teams from insight to repeatable decisioning. Based in Seoul, he combines academic depth in operations strategy with hands-on product analytics and a knack for translating math-heavy models into commercial outcomes.
9 years of coding experience
Exchange Student Mathematics, Exchange Student Mathematics at KTH Royal Institute of TechnologyDoctor of Philosophy - PhD Operations Strategy and Management Science, Doctor of Philosophy - PhD Operations Strategy and Management Science at KAIST COLLEGE OF BUSINESSDaegu Science High SchoolBachelor's degree Mathematical Sciences, Bachelor's degree Mathematical Sciences at Korea Advanced Institute of Science and Technology
Korean, English
Stackoverflow
47reputation
8kreached
0answers
6questions
Github Skills (37)
javascript10
react10
typescript9
electron7
microsoft7
vscode-extension7
vscode7
editor7
deep-learning7
html6
firebase6
api6
android6
tensorflow6
visual-studio6
Programming languages (5)
Github contributions (5)
youngjae99/mon-ami
Aug 2020 - Aug 2022
Contributions:42 pushes, 3 branches in 2 years
youngjae99/youngjae99
Feb 2021 - Apr 2023
Contributions:13 pushes, 1 branch in 2 years 2 months
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