HA-SEUNG-JEONG Jeong Ha Seung
FrontEnd Developer
EVIDENCE BASE
50
Repositories
4085
Commits
2665
Files analyzed
55
Technologies
374
Evidence
45
Active months
Based on 50 repository passports · 41/50 current
ENGINEERING PROFILE
Frontend90%
Backend19%
Testing56%
DevOps80%
CORE TECHNOLOGIES
HR: name + projects · Lead: + files/LOC · persistence Core≥4
TypeScript Core
LANGUAGE · 31/50 repos · 727 files · 54901 LOC
Depth 70 · HIGH
JavaScript Core
LANGUAGE · 31/50 repos · 473 files · 15843 LOC
Depth 70 · HIGH
Java Recurring
LANGUAGE · 3/50 repos · 444 files · 33192 LOC
Depth 70 · HIGH
Markdown Core
LANGUAGE · 35/50 repos · 364 files · 26816 LOC
Depth 70 · HIGH
React Core
FRAMEWORK · 26/50 repos · 307 files · 24874 LOC
Depth 74 · HIGH
Spring Framework Recurring
FRAMEWORK · 3/50 repos · 183 files · 20202 LOC
Depth 78 · HIGH
Lombok Recurring
LIBRARY · 3/50 repos · 165 files · 8387 LOC
Depth 78 · HIGH
JSON Core
LANGUAGE · 34/50 repos · 157 files · 368362 LOC
Depth 70 · HIGH
Next.js Core
FRAMEWORK · 13/50 repos · 152 files · 18409 LOC
Depth 48 · HIGH
JUnit Recurring
TESTING · 2/50 repos · 127 files · 19402 LOC
Depth 53 · HIGH
Spring Data Recurring
LIBRARY · 3/50 repos · 94 files · 11508 LOC
Depth 78 · HIGH
Spring Boot Recurring
FRAMEWORK · 3/50 repos · 78 files · 14257 LOC
Depth 70 · HIGH
Hibernate Recurring
LIBRARY · 3/50 repos · 71 files · 6301 LOC
Depth 78 · HIGH
Mockito Recurring
TESTING · 2/50 repos · 67 files · 12240 LOC
Depth 37 · HIGH
Jackson Recurring
LIBRARY · 3/50 repos · 53 files · 11530 LOC
Depth 66 · HIGH
Spring Security Recurring
SECURITY · 3/50 repos · 44 files · 8023 LOC
Depth 62 · HIGH
ESLint Core
QUALITY · 19/50 repos · 35 files · 118523 LOC
Depth 65 · HIGH
React Router Recurring
LIBRARY · 3/50 repos · 31 files · 2340 LOC
Depth 66 · HIGH
npm Core
BUILD_TOOL · 31/50 repos · 31 files · 310 LOC
Depth 80 · HIGH
Dart Emerging
LANGUAGE · 1/50 repos · 26 files · 3288 LOC
Depth 70 · HIGH
Axios Recurring
LIBRARY · 3/50 repos · 23 files · 1457 LOC
Depth 58 · HIGH
YAML Core
LANGUAGE · 6/50 repos · 20 files · 611 LOC
Depth 70 · HIGH
NestJS Emerging
FRAMEWORK · 1/50 repos · 19 files · 766 LOC
Depth 78 · HIGH
C++ Emerging
LANGUAGE · 1/50 repos · 16 files · 690 LOC
Depth 70 · HIGH
Prettier Core
QUALITY · 7/50 repos · 14 files · 60531 LOC
Depth 61 · HIGH
Redis Recurring
CACHE · 3/50 repos · 14 files · 3825 LOC
Depth 65 · HIGH
Flutter Emerging
FRAMEWORK · 1/50 repos · 13 files · 2252 LOC
Depth 78 · HIGH
JJWT Recurring
SECURITY · 2/50 repos · 11 files · 585 LOC
Depth 74 · HIGH
Gradle Core
BUILD_TOOL · 7/50 repos · 10 files · 251 LOC
Depth 80 · HIGH
Vite Core
BUILD_TOOL · 7/50 repos · 7 files · 91 LOC
Depth 39 · HIGH
Swift Emerging
LANGUAGE · 1/50 repos · 7 files · 66 LOC
Depth 70 · HIGH
XML Emerging
LANGUAGE · 1/50 repos · 7 files · 116 LOC
Depth 70 · HIGH
Tailwind CSS Core
LIBRARY · 14/50 repos · 6 files · 169 LOC
Zod Recurring
LIBRARY · 3/50 repos · 5 files · 883 LOC
Depth 58 · HIGH
Prisma Emerging
DATABASE · 1/50 repos · 4 files · 133 LOC
Depth 74 · HIGH
Express Recurring
FRAMEWORK · 3/50 repos · 4 files · 7851 LOC
Depth 58 · HIGH
Kotlin Emerging
LANGUAGE · 1/50 repos · 4 files · 84 LOC
Depth 70 · HIGH
SQL Recurring
LANGUAGE · 3/50 repos · 3 files · 278 LOC
Depth 70 · HIGH
Shell Recurring
LANGUAGE · 3/50 repos · 3 files · 56 LOC
Depth 70 · HIGH
MongoDB Recurring
DATABASE · 2/50 repos · 2 files · 7947 LOC
Depth 58 · HIGH
Supertest Recurring
TESTING · 2/50 repos · 2 files · 210 LOC
Depth 37 · HIGH
Testcontainers Emerging
TESTING · 1/50 repos · 2 files · 135 LOC
Depth 41 · HIGH
Yarn Recurring
BUILD_TOOL · 2/50 repos · 2 files · 20 LOC
Depth 80 · HIGH
debug Recurring
LIBRARY · 2/50 repos · 2 files · 7811 LOC
Depth 51 · HIGH
Python Emerging
LANGUAGE · 1/50 repos · 1 files · 34 LOC
Depth 70 · HIGH
Morgan Emerging
OBSERVABILITY · 1/50 repos · 1 files · 18 LOC
Depth 45 · HIGH
Vitest Emerging
TESTING · 1/50 repos · 1 files · 152 LOC
Depth 37 · HIGH
Redux Emerging
LIBRARY · 1/50 repos · 1 files · 29 LOC
Depth 49 · HIGH
Dockerfile Emerging
LANGUAGE · 1/50 repos · 1 files · 5 LOC
Depth 70 · HIGH
HTTP (pub) Emerging
LIBRARY · 1/50 repos · 0 files · 0 LOC
JSON Web Tokens Emerging
SECURITY · 1/50 repos · 0 files · 0 LOC
Jest Recurring
TESTING · 3/50 repos · 0 files · 0 LOC
Testing Library Core
TESTING · 4/50 repos · 0 files · 0 LOC
Webpack Emerging
BUILD_TOOL · 1/50 repos · 0 files · 0 LOC
flutter_lints Emerging
QUALITY · 1/50 repos · 0 files · 0 LOC
ENGINEERING HABITS
containerizationobserved
automated_testsobserved
documentationobserved
lintingobserved
formattingobserved
continuous_integrationobserved
Not observed ≠ does not know
PROJECT PORTFOLIO
Programmer-solving Markdown
edencrew-assignment Flutter
url-shortener npm
js-algorithm-prac Markdown
es6-functional-js2 JavaScript
typescript_study npm
ACTIVITY & OWNERSHIP
Active months 45
Commits 4085
Owner authored 100%
PRIMARY PROFILE — HR VIEW
FrontendTypeScript · JavaScript · JavaHigh ownership
In 30 sec: direction — frontend, core — TypeScript · JavaScript · Java, 50 repos 2022 — 2026. No LOC or files — stability only.
DEVELOPER SIGNATURE
TypeScriptJavaScriptJavaMarkdownReactHigh ownership
TECHNOLOGY EVOLUTION
2023
JavaScript · React
2024
TypeScript · Next.js
2025
TypeScript · PostgreSQL
2026
TS + Next
COMMUNITY / IMPACT not a skill rating
Stars 15
Forks 0
Watchers 26
EVERYTHING ABOVE IS TRACEABLE
50 repositories · 4085 commits · 2665 files · 374 evidence
Absence of a technology in the passport does not imply lack of experience