Jiyoon Jang
Data Analyst
South Korea
Summary
👤
Senior🎓
Top SchoolJiyoon Jang is a data analyst with 11 years of experience translating complex datasets into clear business actions and user-centered product improvements. She blends hypothesis-driven analysis, optimized SQL/Python querying, and experimental design (A/B tests, cohort and funnel analyses) to validate insights and recommend high-impact changes. Her work spans industries including banking and insurance, and most recently she has focused on fraud detection rule-setting for transactional activity at Toss. A strong storyteller, she pairs concise, fact-based narratives with visualizations to align cross-functional teams and drive KPI improvements. Trained in economics at Korea University with a 3.94 GPA, she seeks roles that challenge her analytically and support continuous professional growth.
11 years of coding experience
1 year of employment as a software developer
Bachelor of Arts - BA, Economics, 3.94, Bachelor of Arts - BA, Economics, 3.94 at 고려대학교Cheongshim International AcademyConcordia International School Shanghai
Github Skills (53)
webview10
react-native10
iamport10
api10
payment10
android10
nodejs10
react10
adyen10
mws9
java9
typescript9
rest9
obsolete9
rest-api9
Programming languages (13)
Github contributions (5)
iamport/iamport-nice-android-gradle
Sep 2017 - Oct 2018
iamport-nice-android 프로젝트의 gradle변환 버전입니다.
Contributions:8 commits, 6 pushes, 1 branch in 1 year 1 month
gradleiamportandroidkotlinandroid-gradle
iamport/iamport-cordova-interface
Jul 2016 - Aug 2018
Contributions:2 releases, 5 pushes, 1 branch in 2 years
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.