witch-factory SungHyun Kim
EVIDENCE BASE
50
Repositories
3691
Commits
10320
Files analyzed
49
Technologies
301
Evidence
67
Active months
Based on 50 repository passports · 32/50 current
ENGINEERING PROFILE
Frontend78%
Backend37%
Testing71%
DevOps75%
CORE TECHNOLOGIES
HR: name + projects · Lead: + files/LOC · persistence Core≥4
JSON Core
LANGUAGE · 25/50 repos · 7233 files · 218228 LOC
Depth 70 · HIGH
Markdown Core
LANGUAGE · 27/50 repos · 861 files · 163970 LOC
Depth 70 · HIGH
TypeScript Core
LANGUAGE · 18/50 repos · 480 files · 26441 LOC
Depth 70 · HIGH
JavaScript Core
LANGUAGE · 23/50 repos · 132 files · 6901 LOC
Depth 70 · HIGH
React Core
FRAMEWORK · 18/50 repos · 117 files · 6503 LOC
Depth 74 · HIGH
Next.js Core
FRAMEWORK · 10/50 repos · 63 files · 3385 LOC
Depth 93 · HIGH
ESLint Core
QUALITY · 20/50 repos · 51 files · 174002 LOC
Depth 77 · HIGH
NestJS Recurring
FRAMEWORK · 3/50 repos · 48 files · 981 LOC
Depth 74 · HIGH
YAML Core
LANGUAGE · 9/50 repos · 37 files · 43229 LOC
Depth 70 · HIGH
Python Recurring
LANGUAGE · 2/50 repos · 34 files · 5008 LOC
Depth 70 · HIGH
XML Core
LANGUAGE · 6/50 repos · 33 files · 247 LOC
Depth 70 · HIGH
npm Core
BUILD_TOOL · 24/50 repos · 24 files · 240 LOC
Depth 80 · HIGH
React Router Core
LIBRARY · 6/50 repos · 22 files · 1287 LOC
Depth 66 · HIGH
Prettier Core
QUALITY · 12/50 repos · 19 files · 128884 LOC
Depth 61 · HIGH
Express Core
FRAMEWORK · 5/50 repos · 14 files · 733 LOC
Depth 74 · HIGH
C Recurring
LANGUAGE · 2/50 repos · 9 files · 3137 LOC
Depth 70 · HIGH
C++ Recurring
LANGUAGE · 2/50 repos · 9 files · 991 LOC
Depth 70 · HIGH
Vite Core
BUILD_TOOL · 6/50 repos · 8 files · 66 LOC
Depth 37 · HIGH
SQLAlchemy Emerging
LIBRARY · 1/50 repos · 8 files · 166 LOC
Depth 96 · HIGH
pnpm Core
BUILD_TOOL · 7/50 repos · 7 files · 70 LOC
Depth 80 · HIGH
Redis Core
CACHE · 4/50 repos · 7 files · 25818 LOC
Depth 65 · HIGH
Prisma Recurring
DATABASE · 2/50 repos · 5 files · 180 LOC
Depth 70 · HIGH
Zod Core
LIBRARY · 4/50 repos · 5 files · 377 LOC
Depth 54 · HIGH
Yarn Core
BUILD_TOOL · 5/50 repos · 5 files · 50 LOC
Depth 80 · HIGH
Apache Kafka Emerging
MESSAGE_BROKER · 1/50 repos · 5 files · 5 LOC
Depth 66 · HIGH
Go Emerging
LANGUAGE · 1/50 repos · 4 files · 33 LOC
Depth 70 · HIGH
Playwright Emerging
TESTING · 1/50 repos · 4 files · 360 LOC
Depth 70 · HIGH
MongoDB Recurring
DATABASE · 2/50 repos · 4 files · 9192 LOC
Depth 61 · HIGH
FastAPI Emerging
FRAMEWORK · 1/50 repos · 3 files · 55 LOC
Depth 66 · HIGH
TOML Recurring
LANGUAGE · 3/50 repos · 3 files · 51 LOC
Depth 70 · HIGH
Pydantic Emerging
LIBRARY · 1/50 repos · 2 files · 25 LOC
Depth 52 · HIGH
Hibernate Emerging
LIBRARY · 1/50 repos · 2 files · 43 LOC
Depth 59 · HIGH
SQL Recurring
LANGUAGE · 2/50 repos · 2 files · 31 LOC
Depth 70 · HIGH
Supertest Recurring
TESTING · 3/50 repos · 2 files · 40 LOC
Depth 25 · HIGH
debug Emerging
LIBRARY · 1/50 repos · 2 files · 85 LOC
Depth 62 · HIGH
Alembic Emerging
DATABASE · 1/50 repos · 2 files · 77 LOC
Depth 69 · HIGH
PostgreSQL Recurring
DATABASE · 2/50 repos · 1 files · 7453 LOC
Depth 61 · HIGH
NumPy Emerging
LIBRARY · 1/50 repos · 1 files · 152 LOC
Depth 58 · HIGH
Poetry Emerging
BUILD_TOOL · 1/50 repos · 1 files · 10 LOC
Depth 80 · HIGH
Axios Emerging
LIBRARY · 1/50 repos · 1 files · 77 LOC
Depth 58 · HIGH
uv Emerging
BUILD_TOOL · 1/50 repos · 1 files · 10 LOC
Depth 80 · HIGH
Go Modules Emerging
BUILD_TOOL · 1/50 repos · 1 files · 10 LOC
Depth 80 · HIGH
Tailwind CSS Core
LIBRARY · 5/50 repos · 1 files · 31 LOC
esbuild Recurring
BUILD_TOOL · 2/50 repos · 0 files · 0 LOC
Uvicorn Emerging
LIBRARY · 1/50 repos · 0 files · 0 LOC
Passport Emerging
SECURITY · 1/50 repos · 0 files · 0 LOC
Jest Recurring
TESTING · 2/50 repos · 0 files · 0 LOC
Testing Library Emerging
TESTING · 1/50 repos · 0 files · 0 LOC
Webpack Emerging
BUILD_TOOL · 1/50 repos · 0 files · 0 LOC
ENGINEERING HABITS
containerizationobserved
automated_testsobserved
documentationobserved
lintingobserved
formattingobserved
continuous_integrationobserved
Not observed ≠ does not know
PROJECT PORTFOLIO
witch-next-blog Next.js
witch-blog ESLint
resume Markdown
presentations Markdown
2022_sogang_network Markdown
toy-project-monorepo ESLint
ACTIVITY & OWNERSHIP
Active months 67
Commits 3691
Owner authored 94%
PRIMARY PROFILE — HR VIEW
FrontendJSON · Markdown · TypeScriptHigh ownership
In 30 sec: direction — frontend, core — JSON · Markdown · TypeScript, 50 repos 2021 — 2026. No LOC or files — stability only.
DEVELOPER SIGNATURE
JSONMarkdownTypeScriptJavaScriptReactHigh ownership
TECHNOLOGY EVOLUTION
2023
JavaScript · React
2024
TypeScript · Next.js
2025
TypeScript · PostgreSQL
2026
TS + Next
COMMUNITY / IMPACT not a skill rating
Stars 61
Forks 5
Watchers 24
EVERYTHING ABOVE IS TRACEABLE
50 repositories · 3691 commits · 10320 files · 301 evidence
Absence of a technology in the passport does not imply lack of experience