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About me

I'm Heejin, currently in the 17th cohort of Software Maestro, a software talent program run by Korea's Ministry of Science and ICT. I started on the backend with Java and Spring Boot, and these days I ship macOS apps in Swift. I built Pomopet, a menu-bar Pomodoro timer, and put it on Homebrew. I also contribute to CodexBar, an open-source macOS app.

Résumé & portfolio: kes02.github.io

Open source contributions

steipete/CodexBar · Swift — a macOS menu-bar app that keeps AI coding-tool usage limits visible at a glance. 5 PRs merged, 2 bugs reported and root-caused (details).

Featured projects

Pomopet: a macOS menu-bar Pomodoro timer where you pick a pet to study with and keep going together, tracking daily streaks and an activity-grass log. Swift · SwiftUI · SwiftData · install via homebrew-pomopet

jin-skills: seven Claude Code skills I wrote for my own workflow and packaged as a plugin, covering commit and PR conventions, ticket writing, and web research. Claude Code · Shell

time-mirror: a timeline planner (PWA) that sets your planned and actual timelines side by side, so you can look back on whether the day went the way you meant it to. TypeScript · PWA

js-boj-fetch: a Baekjoon problem recommender that suggests still-unsolved problems by your chosen conditions. JavaScript

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