Hakjoon Sim
Senior Research Engineer at Hyundai Motor Company
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolHakjoon Sim is a Senior Research Engineer based in Seoul with 10 years of experience building front-end systems for automotive mobility and consumer services. He has driven UI and developer-experience improvements across major companies including Hyundai Motor Company and SK planet, shipping Next.js/React TypeScript frontends and contributing to large-scale projects like the Transmission BitTorrent client's web UI. His background spans embedded Android work at LG and SK Techx to cloud-deployed frontends with Docker and Nginx, giving him practical depth across device, web, and platform layers. Known for fixing tricky cross-browser rendering and layout issues, he blends attention to UX detail with production-ready engineering. He holds an MEng in Computer Engineering from Sungkyunkwan University and brings a pragmatically research-minded approach to mobility platform challenges.
10 years of coding experience
15 years of employment as a software developer
Master of Engineering - MEng, Computer Engineering, Master of Engineering - MEng, Computer Engineering at 성균관대학교
English
Github Skills (7)
javascript10
user-interface10
web-development10
webpacker9
webpack9
html9
css9
Programming languages (6)
Github contributions (5)
transmission/transmission
Oct 2020 - Nov 2022
Official Transmission BitTorrent client repository
Role in this project:
Front-end Developer
Front-end DeveloperContributions:1 review, 8 commits, 10 PRs in 2 years
Contributions summary:Hakjoon primarily focused on improving the Transmission BitTorrent client's web interface. Their contributions include enhancing the developer environment, fixing UI layout issues within dialogs, and correcting rendering problems related to the overflow menu. Additionally, they addressed a Chrome-specific vendor prefix issue for mask rendering. These changes suggest a focus on improving the user experience and addressing cross-browser compatibility issues.
bittorrent
trainto/recostore
Apr 2021 - Jan 2026
Contributions:39 pushes, 1 branch, 3 tags in 4 years 10 months
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