Umjiseung 엄지성
EVIDENCE BASE
28
Repositories
843
Commits
907
Files analyzed
36
Technologies
240
Evidence
25
Active months
Based on 28 repository passports · 25/28 current
ENGINEERING PROFILE
Frontend72%
Backend92%
Testing80%
DevOps84%
CORE TECHNOLOGIES
HR: name + projects · Lead: + files/LOC · persistence Core≥4
Java Core
LANGUAGE · 17/28 repos · 380 files · 8269 LOC
Depth 70 · HIGH
Lombok Core
LIBRARY · 13/28 repos · 167 files · 4558 LOC
Depth 93 · HIGH
Markdown Core
LANGUAGE · 7/28 repos · 114 files · 4374 LOC
Depth 70 · HIGH
Spring Framework Core
FRAMEWORK · 17/28 repos · 114 files · 3885 LOC
Depth 93 · HIGH
Kotlin Core
LANGUAGE · 6/28 repos · 69 files · 1091 LOC
Depth 70 · HIGH
Python Recurring
LANGUAGE · 2/28 repos · 50 files · 2414 LOC
Depth 70 · HIGH
TypeScript Core
LANGUAGE · 17/28 repos · 48 files · 372 LOC
Depth 74 · HIGH
Gradle Core
LANGUAGE · 32/28 repos · 45 files · 650 LOC
Depth 70 · HIGH
JavaScript Recurring
LANGUAGE · 2/28 repos · 43 files · 2733 LOC
Depth 70 · HIGH
Spring Boot Core
FRAMEWORK · 19/28 repos · 41 files · 456 LOC
Depth 49 · HIGH
Spring Security Core
SECURITY · 4/28 repos · 37 files · 1225 LOC
Depth 93 · HIGH
Spring Data Core
LIBRARY · 13/28 repos · 37 files · 531 LOC
Depth 74 · HIGH
Flask Recurring
FRAMEWORK · 2/28 repos · 32 files · 1644 LOC
Depth 100 · HIGH
React Emerging
FRAMEWORK · 1/28 repos · 31 files · 2099 LOC
Depth 81 · HIGH
Hibernate Core
LIBRARY · 14/28 repos · 28 files · 775 LOC
Depth 66 · HIGH
JUnit Core
TESTING · 19/28 repos · 25 files · 371 LOC
Depth 20 · HIGH
YAML Core
LANGUAGE · 16/28 repos · 17 files · 260 LOC
Depth 70 · HIGH
React Router Emerging
LIBRARY · 1/28 repos · 17 files · 1193 LOC
Depth 78 · HIGH
Jackson Core
LIBRARY · 7/28 repos · 13 files · 433 LOC
Depth 66 · HIGH
XML Recurring
LANGUAGE · 3/28 repos · 11 files · 201 LOC
Depth 70 · HIGH
Axios Emerging
LIBRARY · 1/28 repos · 10 files · 740 LOC
Depth 74 · HIGH
Redis Recurring
CACHE · 3/28 repos · 10 files · 309 LOC
Depth 85 · HIGH
JSON Emerging
LANGUAGE · 1/28 repos · 9 files · 36409 LOC
Depth 70 · HIGH
PostgreSQL Core
DATABASE · 5/28 repos · 5 files · 191 LOC
Depth 61 · HIGH
Werkzeug Emerging
LIBRARY · 1/28 repos · 5 files · 416 LOC
Depth 85 · HIGH
JJWT Core
SECURITY · 4/28 repos · 5 files · 345 LOC
Depth 58 · HIGH
SQLAlchemy Emerging
LIBRARY · 1/28 repos · 4 files · 216 LOC
Depth 96 · HIGH
Alembic Emerging
DATABASE · 1/28 repos · 4 files · 217 LOC
Depth 80 · HIGH
ESLint Emerging
QUALITY · 1/28 repos · 3 files · 34648 LOC
Depth 76 · HIGH
pip Recurring
BUILD_TOOL · 2/28 repos · 2 files · 20 LOC
Depth 80 · HIGH
Prettier Emerging
QUALITY · 1/28 repos · 2 files · 34606 LOC
Depth 72 · HIGH
SQL Recurring
LANGUAGE · 2/28 repos · 2 files · 94 LOC
Depth 70 · HIGH
npm Emerging
BUILD_TOOL · 1/28 repos · 1 files · 10 LOC
Depth 80 · HIGH
Vite Emerging
BUILD_TOOL · 1/28 repos · 1 files · 8 LOC
Depth 41 · HIGH
Dockerfile Emerging
LANGUAGE · 1/28 repos · 1 files · 7 LOC
Depth 70 · HIGH
python-dotenv Emerging
LIBRARY · 1/28 repos · 0 files · 0 LOC
ENGINEERING HABITS
containerizationobserved
automated_testsobserved
documentationobserved
lintingobserved
formattingobserved
continuous_integrationobserved
Not observed ≠ does not know
PROJECT PORTFOLIO
TIL Markdown
Myplaylist-Play-v2 Lombok
REST-API-CRUD Gradle
Myplaylist-Play-v1 Gradle
vibe-coding Flask
flask-practice pip
Wapoo Gradle
spring_user Gradle
ACTIVITY & OWNERSHIP
Active months 25
Commits 843
Owner authored 100%
PRIMARY PROFILE — HR VIEW
BackendJava · Lombok · MarkdownHigh ownership
In 30 sec: direction — backend, core — Java · Lombok · Markdown, 28 repos 2023 — 2025. No LOC or files — stability only.
DEVELOPER SIGNATURE
JavaLombokMarkdownSpring FrameworkKotlinHigh ownership
TECHNOLOGY EVOLUTION
2023
JavaScript · React
2024
TypeScript · Next.js
2025
TypeScript · PostgreSQL
2026
TS + Next
COMMUNITY / IMPACT not a skill rating
Stars 17
Forks 1
Watchers 21
EVERYTHING ABOVE IS TRACEABLE
28 repositories · 843 commits · 907 files · 240 evidence
Absence of a technology in the passport does not imply lack of experience