Jaegyu Sung
Frontend Developer at VISITS Technologies Inc.
Yokohama, Japan
Summary
👤
Senior🎓
Top SchoolJaegyu Sung is a frontend developer with 10 years' experience building user-facing web and mobile applications across Japan and South Korea, currently based in Yokohama. He specializes in React, Next.js, TypeScript and React Native, and has shipped multiple projects from scratch that are now in growth phases. At VISITS Technologies he also optimized data analysis pipelines using Python and AWS Lambda and published an open-source UI library, reflecting a blend of frontend craftsmanship and data-aware engineering. His background includes full-stack work with Node.js and GCP for social apps and legacy-modernization projects using Canvas, WebSocket and Java, showing comfort across stacks and team sizes. Preferring fully remote, global roles, he brings practical product delivery experience together with an appetite for tooling and automation that improves developer and data workflows.
10 years of coding experience
3 years of employment as a software developer
bachelor of Information Technology, Information Technology, bachelor of Information Technology, Information Technology at University of Newcastle
Korean, English, Japanese
Github Skills (29)
javascript10
npm10
executable10
typescript10
javascriptcore10
styled-components10
bun10
bundler10
esmodules10
transpiler10
v8-javascript-engine10
nodejs10
react10
jsx10
in-progress9
Programming languages (2)
Github contributions (5)
nukbal/ruliapp
Feb 2018 - Jul 2020
unofficial app for ruliweb, one of the biggest korean gamaing community
Contributions:184 commits, 27 PRs, 196 pushes in 2 years 4 months
biggestreact-nativehermesrubykorean
visits-works/visits-style
Jun 2018 - Sep 2022
web style component library for visits technology
Contributions:40 releases, 2 reviews, 526 commits in 4 years 4 months
reactcssweb-designstyled-componentsdesign-system
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