Dong Hyeon
DongHyeon Kim

Swift, 알고리즘 공부

"Swift와 크롤링 기술을 통해 안전한 사회를 만들어가는 개발자입니다. 기술을 통해 문제를 해결하고, 사회에 긍정적인 변화를 가져오는 것을 목표로 합니다. 끊임없이 배우고 성장하며, 개발 과정에서 얻은 경험과 배움을 이 블로그에 기록합니다. 궁금한 점이나 피드백은 언제든지 환영합니다! 😊"

📚 About

Positive Impact Through iOS Development

  • I am a developer who aims to share positive influence.
  • Currently building PopPang, an iOS platform that delivers popup-store information through keyword notifications.
  • Interested in Swift, UIKit, SwiftUI rendering, app architecture, and practical performance optimization.
  • I plan and ship apps end-to-end, then document what I learn through daily commits and technical writing.

🎓 Education

Dong-A University, Department of Computer Engineering - 2023.03 ~ 2026.02

  • Graduated

Kyungsung University, Department of Information and Communication Engineering - 2019.03 ~ 2023.02

  • Completed sophomore year

Allen Swift Grammar Master School - 2024.07 ~ 2024.09

  • Online iOS training program for Swift developers
  • Studied Swift language fundamentals with a focus on memory structure and implementation principles

🥇 Awards

2024 Korea Multimedia Society Fall Conference

  • Best Paper Award
  • Research on birthday-cafe information collection and automation using ChatGPT and web crawling
  • Built crawling automation, cookie-based login bypass, and a backend crawler running every 30 minutes

📜 Certifications

Technical Certifications

  • SQLD - 2025.03
  • Information Processing Engineer - 2024.09
  • Linux Master Level 2 - 2024.03
  • Network Manager Level 2 - 2020.05

🛠️ Open Source

Swift and iOS Developer Tools

🚀 Application Projects

PopPang - 2025.09 ~

  • A platform that delivers popup-store information through keyword notifications
  • iOS lead, responsible for the full iOS app and part of the backend API integration
  • Reduced initial screen UI rendering time from 1.2ms to 0.7ms using concurrency and rendering optimization
  • Built EventBus-based screen updates, Coordinator routing, NaverMap integration through UIViewRepresentable, Universal Links, Fastlane deployment, and GitHub Actions testing automation
  • Github link / AppStore link

HaruHanCut - 2025.05 ~

  • A photo-based family sharing app for recording daily moments
  • Solved app-widget data synchronization with App Groups and FileManager
  • Reduced view loading time from 2.3ms to 1.2ms by applying JSONEncoder and FileManager-based caching
  • Built camera frame capture, FCM push notifications through Firebase Cloud Functions, and XCUITest coverage for photo upload/delete flows
  • Github link / AppStore link

EUMMEYO - 2024.09 ~ 2025.04

  • An iOS app for recording voice notes and remembering them through summaries
  • Led iOS development from MVP planning to deployment as part of a four-person team
  • Designed UI flows in Figma, modeled data, managed MVP scope in Notion, and implemented FirebaseAuth social login
  • Replaced a nested asynchronous callback flow with a Combine FlatMap stream and separated repositories for testable upper layers
  • Github link

CodeLounge - 2025.01 ~

  • A learning platform for growing developers
  • Github link

Ban-Chang-Go - 2024.11 ~

💡 Working Principles

Learning Through Shipping

  • I use AI as a productivity tool while focusing on Swift behavior, implementation principles, and measurable app quality.
  • I improve code through tests, code reviews, and small iterations instead of assuming there is a perfect first draft.