Hello, I'm Android Developer Juntae Lee

I’m an Android developer who primarily works with Kotlin and Jetpack Compose. I also have experience developing cross-platform apps with Flutter and have worked with Firebase, MySQL, public APIs, GPT APIs, and web crawling in both personal and practical projects.

I strive to grow by continuously learning and building applications that deliver value to users.

🎓 Education

B.S. in Information & Communication Engineering

📅 Expected Graduation: 2025
🏫 Kyungsung University – Busan, South Korea

💼 Experience

Zeroweb | Development Team Intern

📍 Haeundae-gu, Busan
📅 Sep 2024 – Dec 2024

  • Participated in maintaining Android and iOS app features and developing new test features
  • Developed a test app using the Activity Recognition API to detect user movement such as walking, stopping, and traveling
  • Tested database integration with RESTful APIs and updated partial response-handling logic

📌 Tech Stack

🔷 Primary

  • Kotlin / Dart
  • Jetpack Compose / Flutter
  • Firebase (Auth, Firestore, Storage)
  • REST API, SQLite, MySQL

🔶 Experience

  • Google Maps API, Geolocator
  • Web Crawling (http + html parser)
  • GPT API (OpenAI)
  • SharedPreferences, Local Notification
  • Git, GitHub, Notion, Figma

💼 Projects

📱 Couple Diary App

Oct 2024 ~ Nov 2024

  • Couples connect after signing up and logging in → navigate to main screen
  • Implemented delayed letter-sending feature (delivers after one day)
  • Added calendar events are synced to the map screen for visualizing past dates
  • Created a wishlist feature to track shared activities
  • Allowed users to customize profile and main screen images
    🔗 View on GitHub

📱 Sports Facility Finder App

Nov 2024 ~ Dec 2024

  • Collected location data of sports facilities using public APIs and displayed on map
  • Scraped detailed information (opening hours, phone numbers) using web crawling
  • Stored data locally in SQLite for offline access
  • Used GPT API to provide personalized workout recommendations
  • Developed with Flutter, included a favorites feature
    🔗 View on GitHub

📱 CodeLounge

Dec 2024 ~ Present

  • Built a learning app that provides CS, iOS, and Android interview Q&A in Markdown format using Jetpack Compose
  • Implemented login/sign-up features with Firebase Authentication
  • Provided real-time data with Firebase Realtime Database
  • Enabled easy login with Google Sign-In (play-services-auth)
  • Created modern and consistent UX using SplashScreen API and Material3
  • Applied MVVM architecture with ViewModel for clean state and code management
    🔗 View on GitHub

📫 Contact

I aim to grow by learning with others and building meaningful applications. Thank you!