Sangwon Lee
Lead Frontend Developer at Viva Republica (Toss)
Seoul, South Korea
Summary
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SeniorSangwon Lee is a Lead Frontend Developer based in Seoul with eight years of experience building customer-facing web products. Currently leading frontend work for the Ads & Benefit domain at Viva Republica (Toss), he progressed internally from frontend developer roles focused on loans and advertising, demonstrating strong domain continuity and product ownership. His background includes frontend engineering at fast-moving Korean startups like 클래스101 and Spacesoft, giving him broad experience in shipping scalable, user-centric interfaces. Sangwon blends hands-on implementation with team leadership, advocating pragmatic solutions that balance performance and business metrics. Although his GitHub profile is minimal, his steady career growth within Toss suggests a focus on impactful internal delivery over open-source visibility. He brings localized market knowledge and a track record of evolving responsibilities in high-growth fintech and consumer platforms.
8 years of coding experience
2 years of employment as a software developer
Github Skills (50)
image-preloader10
javascript10
srcset10
vue-image10
image10
static-site-generator10
testing10
typescript10
nextjs10
browser10
webpack10
vue10
fastest10
loader10
compiler10
Programming languages (4)
Github contributions (5)
john015/vue-load-image
Nov 2018 - Jun 2021
A Vue component for showing loader during image loading https://john015.github.io/vue-load-image/
Contributions:1 review, 46 commits, 17 PRs in 2 years 7 months
vuejsvue-loadimagevue3vue-image
john015/john015.github.io
Jan 2019 - Dec 2020
Contributions:6 PRs, 123 pushes, 13 branches in 1 year 11 months
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