JiHwan Oh
Network Software Engineer at Toss
Seoul, South Korea
Summary
🤩
Rockstar🎓
Top SchoolJiHwan Oh is a Network Software Engineer with six years of experience building backend and core systems, now working at Toss after contributing to QueryPie. He combines strong computer engineering fundamentals (4.13/4.5 GPA) with hands-on backend development and a taste for front-end polish, evidenced by contributions to the popular refined-github extension where he implemented UX improvements and bug fixes. Based in Seoul, he blends practical open-source collaboration with production-focused engineering, often surfacing subtle UX details like disabled-action states and previous-file views. JiHwan is completing formal CS studies at 한국방송통신대학교 while rapidly transitioning into network software at scale, bringing both high academic achievement and a developer-first mindset.
7 years of coding experience
학사, Computer Science, 학사, Computer Science at 한국방송통신대학교학사, Computer Engineering, 4.13/4.5, 학사, Computer Engineering, 4.13/4.5 at 협성대학교
Github Skills (15)
dom-manipulation10
opera-extension10
typescript10
webextension10
javascript10
typescripts10
github10
chrome-extension10
react10
typescript-types10
browser-extension10
firefox-addon9
github-api9
google-chrome-extension9
userstyle4
Programming languages (13)
Github contributions (5)
refined-github/refined-github
Mar 2023 - Mar 2025
:octocat: Browser extension that simplifies the GitHub interface and adds useful features
Role in this project:
Front-end Developer
Front-end DeveloperContributions:84 reviews, 25 PRs, 159 comments in 1 year 11 months
Contributions summary:JiHwan primarily contributed to the refinement and enhancement of the GitHub interface through the browser extension. Their work included implementing new features such as displaying the "disabled" state for GitHub Actions indicators, relabeling and improving the "restore-file" feature, adding a feature to display the previous version of a file, and adding links to PRs in actions. They also addressed several bug fixes related to display and functionality. The user's commits demonstrate a strong understanding of the codebase and the targeted improvements to the GitHub user experience.
browser-extensionchrome-extensionuserstylefirefox-addonsafari-extension
134130/gh-cherry-pick
Oct 2024 - Mar 2026
🍒 Cherry-pick your pull requests to another branch
Contributions:10 releases, 1 PR, 33 pushes in 1 year 5 months
cherry-pickgh-extension
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