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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 Contract Guardian — AI 계약서 분석 SaaS (Next.js 16 + Claude API + Supabase)
  • Applying Feature-Sliced Design architecture to production monorepo
  • Exploring AI integration patterns: Claude API, Gemini API in Next.js apps
journey
    title 2026 Focus Areas
    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
    section Infra
      Docker Production Build: 4: Done
      Supabase Auth & RLS: 5: Done
      Redis Rate Limiting: 3: In Progress
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  ·  GraphQL  ·  MySQL
Infra           Docker  ·  GitHub Actions  ·  AWS  ·  Vercel  ·  Turborepo

WakaTime

Code Time

Lines of code

I'm an Early 🐤

🌞 Morning                5213 commits        ██████░░░░░░░░░░░░░░░░░░░   24.10 % 
🌆 Daytime                11124 commits       █████████████░░░░░░░░░░░░   51.42 % 
🌃 Evening                5170 commits        ██████░░░░░░░░░░░░░░░░░░░   23.90 % 
🌙 Night                  125 commits         ░░░░░░░░░░░░░░░░░░░░░░░░░   00.58 % 

📅 I'm Most Productive on Wednesday

Monday                   3211 commits        ████░░░░░░░░░░░░░░░░░░░░░   14.84 % 
Tuesday                  4012 commits        █████░░░░░░░░░░░░░░░░░░░░   18.55 % 
Wednesday                5300 commits        ██████░░░░░░░░░░░░░░░░░░░   24.50 % 
Thursday                 3017 commits        ███░░░░░░░░░░░░░░░░░░░░░░   13.95 % 
Friday                   2930 commits        ███░░░░░░░░░░░░░░░░░░░░░░   13.54 % 
Saturday                 1493 commits        ██░░░░░░░░░░░░░░░░░░░░░░░   06.90 % 
Sunday                   1669 commits        ██░░░░░░░░░░░░░░░░░░░░░░░   07.72 % 

📊 This Week I Spent My Time On

🕑︎ Time Zone: Asia/Seoul

💬 Programming Languages: 
Other                    3 hrs               █████████████████████░░░░   82.43 % 
Markdown                 30 mins             ███░░░░░░░░░░░░░░░░░░░░░░   13.82 % 
Git Config               3 mins              ░░░░░░░░░░░░░░░░░░░░░░░░░   01.49 % 
JSON                     3 mins              ░░░░░░░░░░░░░░░░░░░░░░░░░   01.46 % 
Bash                     1 min               ░░░░░░░░░░░░░░░░░░░░░░░░░   00.52 % 

🔥 Editors: 
Google Calendar          3 hrs               █████████████████████░░░░   82.36 % 
Cursor                   38 mins             ████░░░░░░░░░░░░░░░░░░░░░   17.64 % 

💻 Operating System: 
Unknown OS               3 hrs               █████████████████████░░░░   82.36 % 
Mac                      38 mins             ████░░░░░░░░░░░░░░░░░░░░░   17.64 % 

I Mostly Code in TypeScript

TypeScript               27 repos            ██████████░░░░░░░░░░░░░░░   40.91 % 
JavaScript               21 repos            ████████░░░░░░░░░░░░░░░░░   31.82 % 
Python                   7 repos             ███░░░░░░░░░░░░░░░░░░░░░░   10.61 % 
Jupyter Notebook         2 repos             █░░░░░░░░░░░░░░░░░░░░░░░░   03.03 % 
MDX                      1 repo              ░░░░░░░░░░░░░░░░░░░░░░░░░   01.52 % 

Last Updated on 26/02/2026 00:38:14 UTC


capsule

Pinned Loading

  1. I'm an early 🐤 I'm an early 🐤
    1
    🌞 Morning   159 commits  ███░░░░░░░░░░░░░░░░░░  14.7%
    2
    🌆 Daytime   561 commits  ██████████▊░░░░░░░░░░  51.8%
    3
    🌃 Evening   360 commits  ██████▉░░░░░░░░░░░░░░  33.2%
    4
    🌙 Night       4 commits  ░░░░░░░░░░░░░░░░░░░░░   0.4%
  2. 📊 Weekly development breakdown 📊 Weekly development breakdown
    1
    Other      3 hrs          █████████████████▎░░░  82.4%
    2
    Markdown   30 mins        ██▉░░░░░░░░░░░░░░░░░░  13.8%
    3
    Git Config 3 mins         ▎░░░░░░░░░░░░░░░░░░░░   1.5%
    4
    JSON       3 mins         ▎░░░░░░░░░░░░░░░░░░░░   1.5%
    5
    Bash       1 min          ░░░░░░░░░░░░░░░░░░░░░   0.5%
  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