JAEKWANG97 marmong
Backend Engineer | Open Source Contributor
EVIDENCE BASE
22
Repositories
1457
Commits
1700
Files analyzed
45
Technologies
130
Evidence
17
Active months
Based on 22 repository passports · 14/22 current
ENGINEERING PROFILE
Frontend50%
Backend78%
Testing28%
DevOps64%
CORE TECHNOLOGIES
HR: name + projects · Lead: + files/LOC · persistence Core≥4
Java Core
LANGUAGE · 5/22 repos · 620 files · 59589 LOC
Depth 70 · HIGH
Spring Framework Recurring
FRAMEWORK · 2/22 repos · 235 files · 40823 LOC
Depth 74 · HIGH
TypeScript Core
LANGUAGE · 4/22 repos · 182 files · 22844 LOC
Depth 70 · HIGH
Markdown Core
LANGUAGE · 14/22 repos · 145 files · 26989 LOC
Depth 70 · HIGH
JUnit Recurring
TESTING · 2/22 repos · 88 files · 19494 LOC
Depth 53 · HIGH
Hibernate Recurring
LIBRARY · 2/22 repos · 84 files · 11739 LOC
Depth 74 · HIGH
Spring Data Recurring
LIBRARY · 2/22 repos · 80 files · 9423 LOC
Depth 74 · HIGH
Spring Security Recurring
SECURITY · 2/22 repos · 75 files · 16988 LOC
Depth 74 · HIGH
Next.js Recurring
FRAMEWORK · 2/22 repos · 74 files · 12787 LOC
Depth 74 · HIGH
Lombok Emerging
LIBRARY · 1/22 repos · 74 files · 3324 LOC
Depth 93 · HIGH
Python Core
LANGUAGE · 5/22 repos · 62 files · 4857 LOC
Depth 70 · HIGH
Spring Boot Recurring
FRAMEWORK · 2/22 repos · 60 files · 17598 LOC
Depth 74 · HIGH
SQL Core
LANGUAGE · 4/22 repos · 60 files · 2707 LOC
Depth 70 · HIGH
React Recurring
FRAMEWORK · 3/22 repos · 52 files · 27608 LOC
Depth 74 · HIGH
JavaScript Core
LANGUAGE · 6/22 repos · 51 files · 40010 LOC
Depth 70 · HIGH
Jackson Recurring
LIBRARY · 2/22 repos · 45 files · 9072 LOC
Depth 74 · HIGH
YAML Core
LANGUAGE · 6/22 repos · 40 files · 2304 LOC
Depth 70 · HIGH
XML Core
LANGUAGE · 4/22 repos · 40 files · 460 LOC
Depth 70 · HIGH
JSON Core
LANGUAGE · 6/22 repos · 33 files · 41338 LOC
Depth 70 · HIGH
Mockito Emerging
TESTING · 1/22 repos · 27 files · 3524 LOC
Depth 53 · HIGH
Playwright Emerging
TESTING · 1/22 repos · 17 files · 3354 LOC
Depth 74 · HIGH
Redis Recurring
CACHE · 3/22 repos · 16 files · 12426 LOC
Depth 45 · HIGH
React Router Emerging
LIBRARY · 1/22 repos · 16 files · 1654 LOC
Depth 74 · HIGH
Gradle Core
LANGUAGE · 4/22 repos · 10 files · 188 LOC
Depth 70 · HIGH
PostgreSQL Recurring
DATABASE · 2/22 repos · 9 files · 2807 LOC
Depth 100 · HIGH
Dockerfile Recurring
LANGUAGE · 3/22 repos · 9 files · 219 LOC
Depth 70 · HIGH
ESLint Core
QUALITY · 4/22 repos · 8 files · 36693 LOC
Depth 69 · HIGH
Scala Emerging
LANGUAGE · 1/22 repos · 8 files · 605 LOC
Depth 70 · HIGH
npm Core
BUILD_TOOL · 6/22 repos · 6 files · 60 LOC
Depth 80 · HIGH
Shell Emerging
LANGUAGE · 1/22 repos · 4 files · 260 LOC
Depth 70 · HIGH
pip Core
BUILD_TOOL · 4/22 repos · 4 files · 40 LOC
Depth 80 · HIGH
Flask Recurring
FRAMEWORK · 2/22 repos · 4 files · 144 LOC
Depth 62 · HIGH
Prettier Recurring
QUALITY · 3/22 repos · 4 files · 30352 LOC
Depth 61 · HIGH
FastAPI Emerging
FRAMEWORK · 1/22 repos · 3 files · 140 LOC
Depth 66 · HIGH
Tailwind CSS Recurring
LIBRARY · 2/22 repos · 2 files · 67 LOC
JJWT Emerging
SECURITY · 1/22 repos · 2 files · 138 LOC
Depth 62 · HIGH
Testcontainers Emerging
TESTING · 1/22 repos · 1 files · 1599 LOC
Depth 37 · HIGH
Requests Emerging
LIBRARY · 1/22 repos · 1 files · 160 LOC
Depth 58 · HIGH
Pydantic Emerging
LIBRARY · 1/22 repos · 1 files · 37 LOC
Depth 53 · HIGH
Axios Emerging
LIBRARY · 1/22 repos · 1 files · 68 LOC
Depth 58 · HIGH
Flyway Emerging
LIBRARY · 1/22 repos · 1 files · 1599 LOC
Depth 37 · HIGH
Vite Emerging
BUILD_TOOL · 1/22 repos · 1 files · 11 LOC
Depth 42 · HIGH
Uvicorn Emerging
LIBRARY · 1/22 repos · 1 files · 9 LOC
Depth 41 · HIGH
python-dotenv Recurring
LIBRARY · 2/22 repos · 0 files · 0 LOC
Testing Library Emerging
TESTING · 1/22 repos · 0 files · 0 LOC
ENGINEERING HABITS
containerizationobserved
automated_testsobserved
documentationobserved
lintingobserved
formattingobserved
continuous_integrationobserved
Not observed ≠ does not know
PROJECT PORTFOLIO
MultiThreadChat Markdown
dropship-shop PostgreSQL
neogul-saju npm
sessionized-event-lakehouse Markdown
rail-study-quiz Next.js
event-log-pipeline PostgreSQL
mungnyang-mockup Markdown
react-face-api npm
ACTIVITY & OWNERSHIP
Active months 17
Commits 1457
Owner authored 93%
PRIMARY PROFILE — HR VIEW
BackendJava · Spring Framework · TypeScriptHigh ownership
In 30 sec: direction — backend, core — Java · Spring Framework · TypeScript, 22 repos 2024 — 2026. No LOC or files — stability only.
DEVELOPER SIGNATURE
JavaSpring FrameworkTypeScriptMarkdownJUnitHigh ownership
TECHNOLOGY EVOLUTION
2023
JavaScript · React
2024
TypeScript · Next.js
2025
TypeScript · PostgreSQL
2026
TS + Next
COMMUNITY / IMPACT not a skill rating
Stars 5
Forks 0
Watchers 4
EVERYTHING ABOVE IS TRACEABLE
22 repositories · 1457 commits · 1700 files · 130 evidence
Absence of a technology in the passport does not imply lack of experience