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sgd122/README.md

capsule

Gidong Seong

Web Developer  ·  Seoul, Korea

I build web products with clean architecture and great developer experience.
Previously at @travelmakers, building Next.js platforms and design systems.


Blog  ·  LinkedIn  ·  Email


Currently Working On

  • Building GDG Busan Hackathon Vote — 실시간 투표 플랫폼 (Next.js 16 + React 19 + Cloud Firestore)
  • Designing weighted scoring (심사위원 + 참가자 가중 점수) with anti-fraud 4중 검증
  • Crafting a "Living Terminal" dark UI with dramatic countdown result reveals
journey
    title 2026 Focus Areas
    section Realtime & Web
      Firestore onSnapshot Sync: 5: Done
      Custom Token Auth: 5: Done
      Dramatic Result Reveal: 4: In Progress
    section AI & Web
      Claude API Integration: 5: Done
      Gemini API Exploration: 4: Done
      AI-powered PDF Analysis: 5: In Progress
    section Architecture
      FSD Migration: 5: Done
      Monorepo (Turborepo): 5: Done
      Design System (Dash): 4: Done
Loading

Dev Approach

Type-safe everything     Zod validation + TypeScript strict mode, end-to-end type safety
FSD architecture         Layered imports: shared → entities → features → widgets → pages
Monorepo-first           Turborepo + pnpm workspaces, shared packages across apps
Production habits        Rate limiting, audit logging, PII filtering, CORS — built in from day one

Stack

Frontend        TypeScript  ·  React  ·  Next.js  ·  Tailwind CSS  ·  React Native
Backend         Node.js  ·  Supabase  ·  Firebase  ·  GraphQL  ·  MySQL
Infra           Docker  ·  GitHub Actions  ·  AWS  ·  Vercel  ·  Turborepo

WakaTime

Code Time

Lines of code

I'm an Early 🐤

🌞 Morning                5239 commits        ██████░░░░░░░░░░░░░░░░░░░   25.41 % 
🌆 Daytime                10597 commits       █████████████░░░░░░░░░░░░   51.39 % 
🌃 Evening                4714 commits        ██████░░░░░░░░░░░░░░░░░░░   22.86 % 
🌙 Night                  71 commits          ░░░░░░░░░░░░░░░░░░░░░░░░░   00.34 % 

📅 I'm Most Productive on Wednesday

Monday                   3015 commits        ████░░░░░░░░░░░░░░░░░░░░░   14.62 % 
Tuesday                  3741 commits        █████░░░░░░░░░░░░░░░░░░░░   18.14 % 
Wednesday                5156 commits        ██████░░░░░░░░░░░░░░░░░░░   25.00 % 
Thursday                 2889 commits        ████░░░░░░░░░░░░░░░░░░░░░   14.01 % 
Friday                   2871 commits        ███░░░░░░░░░░░░░░░░░░░░░░   13.92 % 
Saturday                 1468 commits        ██░░░░░░░░░░░░░░░░░░░░░░░   07.12 % 
Sunday                   1481 commits        ██░░░░░░░░░░░░░░░░░░░░░░░   07.18 % 

📊 This Week I Spent My Time On

🕑︎ Time Zone: Asia/Seoul

💬 Programming Languages: 
TypeScript               7 hrs 39 mins       ██████████░░░░░░░░░░░░░░░   41.81 % 
Markdown                 7 hrs 30 mins       ██████████░░░░░░░░░░░░░░░   40.98 % 
JSON                     33 mins             █░░░░░░░░░░░░░░░░░░░░░░░░   03.02 % 
JavaScript               31 mins             █░░░░░░░░░░░░░░░░░░░░░░░░   02.84 % 
YAML                     25 mins             █░░░░░░░░░░░░░░░░░░░░░░░░   02.35 % 

🔥 Editors: 
Cursor                   15 hrs 10 mins      █████████████████████░░░░   82.83 % 
VS Code                  2 hrs 19 mins       ███░░░░░░░░░░░░░░░░░░░░░░   12.67 % 
Codex CLI                43 mins             █░░░░░░░░░░░░░░░░░░░░░░░░   03.95 % 
Exec Wakatime            6 mins              ░░░░░░░░░░░░░░░░░░░░░░░░░   00.55 % 

💻 Operating System: 
Mac                      18 hrs 19 mins      █████████████████████████   100.00 % 

I Mostly Code in TypeScript

TypeScript               29 repos            ███████████░░░░░░░░░░░░░░   42.03 % 
JavaScript               21 repos            ████████░░░░░░░░░░░░░░░░░   30.43 % 
Jupyter Notebook         2 repos             █░░░░░░░░░░░░░░░░░░░░░░░░   02.90 % 
Shell                    1 repo              ░░░░░░░░░░░░░░░░░░░░░░░░░   01.45 % 
MDX                      1 repo              ░░░░░░░░░░░░░░░░░░░░░░░░░   01.45 % 

Last Updated on 15/06/2026 01:13:16 UTC


capsule

Pinned Loading

  1. I'm an early 🐤 I'm an early 🐤
    1
    🌞 Morning   242 commits  ████▌░░░░░░░░░░░░░░░░  21.6%
    2
    🌆 Daytime   554 commits  ██████████▎░░░░░░░░░░  49.4%
    3
    🌃 Evening   324 commits  ██████░░░░░░░░░░░░░░░  28.9%
    4
    🌙 Night       2 commits  ░░░░░░░░░░░░░░░░░░░░░   0.2%
  2. 📊 Weekly development breakdown 📊 Weekly development breakdown
    1
    TypeScript 7 hrs 39 mins  ████████▊░░░░░░░░░░░░  41.8%
    2
    Markdown   7 hrs 30 mins  ████████▌░░░░░░░░░░░░  41.0%
    3
    JSON       33 mins        ▋░░░░░░░░░░░░░░░░░░░░   3.0%
    4
    JavaScript 31 mins        ▌░░░░░░░░░░░░░░░░░░░░   2.8%
    5
    YAML       25 mins        ▍░░░░░░░░░░░░░░░░░░░░   2.4%
  3. DNDACADEMY/dndacademy.github.io DNDACADEMY/dndacademy.github.io Public

    DND 기술블로그

    SCSS 3 4

  4. travelmakers/dash travelmakers/dash Public

    Dash Libraries

    TypeScript 14

  5. contract-guardian contract-guardian Public

    Contract Guardian: AI-powered contract review service for freelancers and small businesses.

    TypeScript

  6. gdg-busan/2026-Build-with-AI-Hackaton-in-Busan gdg-busan/2026-Build-with-AI-Hackaton-in-Busan Public

    GDG Busan "Build with AI" Hackathon Voting Platform

    TypeScript