Inseong So
Frontend Engineer at Viva Republica (Toss)
Seoul, South Korea
Summary
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SeniorInseong So is a Frontend Engineer with 8 years’ experience building high-impact web products and leading teams from Seoul, currently at Viva Republica (Toss). He blends hands-on frontend craft—design systems, performance optimization, and reusable packages—with delivery leadership, having led teams of up to 12 and cut release times by 90% through CI/CD and pipeline re-architecture. His background spans full-stack migrations and backend automation (AWS SES, Node.js), enabling him to solve both online and offline product challenges as he builds toward a “Full-Stack Team.” He has a track record of launching products that rapidly scale (10K MAU in 6 months) and improving business outcomes like funding success and developer experience. A former military section chief, he brings operational discipline and calm under pressure to incident response and high-stakes launches. He combines pragmatic engineering with a systems mindset, often prioritizing developer productivity and measurable business impact.
8 years of coding experience
5 years of employment as a software developer
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (64)
oop10
markdown10
javascript10
pseudocode10
context-api10
furry10
redux10
java10
props10
vanilla-javascript10
react-router10
documentation10
hit-counter9
middleware9
cypress9
Programming languages (9)
Github contributions (5)
InSeong-So/IT-Note
Feb 2019 - Aug 2022
개발 지식을 면접 질문과 답변 형태로 정리한 저장소:book:
Contributions:371 commits, 1 PR, 302 pushes in 3 years 6 months
javamarkdownknowledge
FECrash/Pair-Programming
Nov 2021 - Jan 2022
👨💻짝 프로그래밍👩💻 원본 저장소
Contributions:8 reviews, 78 commits, 39 PRs in 2 months
cssjavascript
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