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Achievement: QuickdrawAchievement: YOLOAchievement: Pull Sharkx2

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SJ-1220/README.md
πŸ‡°πŸ‡· ν•œκ΅­μ–΄λ‘œ 보기 (Click to view Korean)

πŸ‘‹ μ•ˆλ…•ν•˜μ„Έμš”, 개발자 κΉ€μ„ μ§„μž…λ‹ˆλ‹€

πŸ§‘β€πŸ’» κ²½λ ₯

  • Full-Stack & Mobile Developer (2025.11 ~ ν˜„μž¬)

πŸŽ“ ν•™λ ₯

  • κ΄‘μš΄λŒ€ν•™κ΅ μ†Œν”„νŠΈμ›¨μ–΄ν•™λΆ€ (2020 ~ 2025)

πŸ›  기술 μŠ€νƒ

  • Frontend: React, JavaScript, TypeScript, Next.js
  • Backend: Node.js, Express, PostgreSQL, MariaDB, Prisma, Supabase
  • App: Flutter
  • Etc: Git, GitHub, Claude Code

πŸ’» ν”„λ‘œμ νŠΈ

νŒŒμ›Œλ©”μΉ΄ β€” IoT μ•ˆμ „ λͺ¨λ‹ˆν„°λ§ ν”Œλž«νΌ (νšŒμ‚¬ ν”„λ‘œμ νŠΈ @ μ΄μŒν…)

  • 철도 μœ μ§€λ³΄μˆ˜ μž‘μ—…μžλ₯Ό μœ„ν•œ μ‹€μ‹œκ°„ μ•ˆμ „ λͺ¨λ‹ˆν„°λ§ μ‹œμŠ€ν…œμ˜ μ›Ή Β· μ•± Β· μ„œλ²„ ν’€μŠ€νƒ 개발
  • React / Google Maps 기반 μ›Ή κ΄€μ œ λŒ€μ‹œλ³΄λ“œμ™€ Flutter ν¬λ‘œμŠ€ν”Œλž«νΌ 앱을 MQTT Β· WebSocket으둜 연동
  • Node.js, MariaDB, JWT 인증 기반의 μ‹€μ‹œκ°„ μ•ˆμ „ νŒμ • API κ΅¬ν˜„

NaviyNote (개인 ν”„λ‘œμ νŠΈ β€” naviynote_web, naviynote_api)

  • 넀이버 OAuth Β· μΊ˜λ¦°λ” 연동을 μ§€μ›ν•˜λŠ” λ©”λͺ¨+할일 톡합 생산성 앱을 1인 ν’€μŠ€νƒμœΌλ‘œ 개발
  • Next.js, TypeScript, Supabase(PostgreSQL) 기반으둜 ꡬ좕 ν›„, ν”„λ‘ νŠΈ/λ°±μ—”λ“œλ₯Ό 뢄리해 Express Β· Prisma λ°±μ—”λ“œλ‘œ μž¬κ΅¬μ„±
  • λ“œλž˜κ·Έ μ•€ λ“œλ‘­ λ©”λͺ¨ λΆ„λ₯˜ 및 λ©”λͺ¨-할일 1:1 μ—°κ²° κΈ°λŠ₯ 섀계

Manda (개인 ν”„λ‘œμ νŠΈ, Google ν”Œλ ˆμ΄μŠ€ν† μ–΄ μΆœμ‹œ)

  • Flutter와 Hive 기반 μ˜€ν”„λΌμΈ 퍼슀트 9x9 λ§Œλ‹€λΌνŠΈ λͺ©ν‘œ 관리 앱을 1인 개발
  • κΈ°νšλΆ€ν„° λ””μžμΈ μ‹œμŠ€ν…œ, λ‹€κ΅­μ–΄ 지원(ν•œ/영), λΈŒλžœλ”©, μŠ€ν† μ–΄ μΆœμ‹œκΉŒμ§€ 전체 라이프사이클 μ „λ‹΄

πŸ‘‹ Hi, I'm Sunjin Kim

πŸ§‘β€πŸ’» Experience

  • Full-Stack & Mobile Developer (Nov 2025 – Present)

πŸŽ“ Education

  • Kwangwoon University β€” B.S. in Software (2020 – 2025)

πŸ›  Tech Stack

  • Frontend: React, JavaScript, TypeScript, Next.js
  • Backend: Node.js, Express, PostgreSQL, MariaDB, Prisma, Supabase
  • App: Flutter
  • Etc: Git, GitHub, Claude Code

πŸ’» Projects

PowerMecca β€” IoT Safety Monitoring Platform (Company project @ EumTech)

  • Full-stack development (web, mobile, and server) of a real-time safety monitoring system for railway maintenance workers
  • Built a React/Google Maps web dashboard and a Flutter cross-platform app, synced in real time via MQTT and WebSocket
  • Implemented a real-time safety evaluation API with Node.js, MariaDB, and JWT authentication

NaviyNote (Personal project β€” naviynote_web, naviynote_api)

  • Solo full-stack productivity app combining memo-taking and to-do management with Naver OAuth & Calendar sync
  • Built with Next.js, TypeScript, and Supabase (PostgreSQL); later split into a separate frontend and an Express/Prisma backend
  • Designed drag-and-drop memo organization and 1:1 memo–todo linking

Manda (Personal project, published on Google Play)

  • Solo-developed an offline-first 9x9 Mandalart goal-planning app with Flutter and Hive
  • Owned the entire product lifecycle: design system, i18n (Korean/English), branding, and the Play Store release

Pinned Loading

  1. NaviyNote NaviyNote Public

    A full-stack Next.js 15 memo & to-do app with Naver login and calendar sync, backed by Supabase.

    TypeScript 1

  2. flutter-mandalart flutter-mandalart Public

    A professional goal-tracking app built on the 9x9 Mandalart system with Flutter and Hive.

    Dart

  3. NaviyNote_api NaviyNote_api Public

    The backend REST API for NaviyNote, a memo & to-do app, built with Express, TypeScript, and Prisma/PostgreSQL, with Naver OAuth and JWT auth.

    TypeScript

  4. NaviyNote_web NaviyNote_web Public

    The web client for NaviyNote, a memo & to-do app with memo–todo linking and Naver Calendar sync, built with Next.js 16 and React 19.

    TypeScript