Jeonghun Byeon
Site Reliability Engineering Team Lead at Karrot
Gyeonggi, South Korea
Summary
🤩
Rockstar🎓
Top SchoolJeonghun Byeon is a Site Reliability Engineering Team Lead with 15 years of hands-on experience building scalable web applications, developer tooling, and SRE platforms across startups and larger product teams. He blends full-stack engineering (Node.js, Java, PostgreSQL) with infrastructure automation (AWS, Terraform, Docker) and has led auth, CI/CD, and infrastructure initiatives in production. A pragmatic open-source contributor, he has improved widely used projects such as Mocha and Sentry’s JavaScript SDK and created practical utilities like Slack Invite Automation. Jeonghun is a rapid learner who publishes technical writing and a Korean Node.js book, and he often turns side projects into real-world developer tools. Not obviously, his background spans front-end WYSIWYG test automation to deep backend tracing and observability work, giving him a rare cross-layer view of reliability.
15 years of coding experience
16 years of employment as a software developer
Computer Science, Computer Science at The University of Suwon
English, Korean
Stackoverflow
933reputation
93kreached
20answers
7questions
Github Skills (48)
javascript10
sentry10
slack-api10
expressjs10
tracer10
api-design10
testing10
configuration-management10
typescript10
test-framework10
mochajs10
remix10
sdk10
vue10
ember10
Programming languages (20)
Github contributions (5)
outsideris/slack-invite-automation
Jan 2015 - Aug 2019
A tiny web application to invite a user into your slack team.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:98 commits, 61 PRs, 80 pushes in 4 years 8 months
Contributions summary:Jeonghun was involved in setting up and developing the core functionality of the Slack invite automation web application. They initialized the Express.js framework, implemented the backend logic for inviting users to a Slack team using the Slack API, and created the front-end interface with basic design elements. The user also integrated configuration settings, improved error handling, added a Heroku deploy button, and addressed security considerations. Furthermore, they integrated the subpath feature.
reactslack-teaminvitetinyweb-application
mochajs/mocha
Aug 2015 - Nov 2022
☕️ simple, flexible, fun javascript test framework for node.js & the browser
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:1 release, 61 reviews, 56 commits in 7 years 4 months
Contributions summary:Jeonghun primarily contributed to enhancing the test suite and improving the Mocha framework's internal workings. They fixed bugs related to coverage reporting, upgraded dependencies like Jade, and addressed issues in stack trace filtering. Additionally, they ensured the proper functioning of features like the `--bail` flag and improved the handling of skipped and pending tests within the testing framework, thereby contributing to the overall robustness of the testing library.
test-automationbrowsernode-jstestingjavascript
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