hellokaton katon
Full-stack engineer focused on AI agent apps. Open-source maker.
EVIDENCE BASE
50
Repositories
2106
Commits
3270
Files analyzed
58
Technologies
565
Evidence
83
Active months
Based on 50 repository passports · 50/50 current
ENGINEERING PROFILE
Frontend72%
Backend78%
Testing32%
DevOps76%
CORE TECHNOLOGIES
HR: name + projects · Lead: + files/LOC · persistence Core≥4
Java Core
LANGUAGE · 25/50 repos · 1322 files · 65830 LOC
Depth 70 · HIGH
TypeScript Core
LANGUAGE · 29/50 repos · 343 files · 25283 LOC
Depth 70 · HIGH
Markdown Core
LANGUAGE · 50/50 repos · 268 files · 22368 LOC
Depth 70 · HIGH
Lombok Core
LIBRARY · 11/50 repos · 255 files · 9883 LOC
Depth 85 · HIGH
XML Core
LANGUAGE · 24/50 repos · 192 files · 7209 LOC
Depth 70 · HIGH
React Core
FRAMEWORK · 6/50 repos · 116 files · 10503 LOC
Depth 81 · HIGH
Go Core
LANGUAGE · 8/50 repos · 87 files · 5356 LOC
Depth 70 · HIGH
JavaScript Core
LANGUAGE · 22/50 repos · 85 files · 36117 LOC
Depth 70 · HIGH
Spring Framework Core
FRAMEWORK · 5/50 repos · 79 files · 3012 LOC
Depth 74 · HIGH
Redis Core
CACHE · 9/50 repos · 57 files · 12325 LOC
Depth 69 · HIGH
YAML Core
LANGUAGE · 27/50 repos · 53 files · 32472 LOC
Depth 70 · HIGH
JSON Core
LANGUAGE · 14/50 repos · 46 files · 16280 LOC
Depth 70 · HIGH
Spring Boot Recurring
FRAMEWORK · 3/50 repos · 36 files · 812 LOC
Depth 70 · HIGH
JUnit Core
TESTING · 9/50 repos · 32 files · 2317 LOC
Depth 37 · HIGH
Next.js Core
FRAMEWORK · 6/50 repos · 30 files · 5854 LOC
Depth 66 · HIGH
Maven Core
BUILD_TOOL · 22/50 repos · 22 files · 220 LOC
Depth 80 · HIGH
MongoDB Core
DATABASE · 18/50 repos · 20 files · 1734 LOC
Depth 61 · HIGH
Jackson Recurring
LIBRARY · 3/50 repos · 16 files · 572 LOC
Depth 78 · HIGH
PHP Recurring
LANGUAGE · 2/50 repos · 11 files · 462 LOC
Depth 70 · HIGH
npm Core
BUILD_TOOL · 10/50 repos · 10 files · 100 LOC
Depth 80 · HIGH
Python Core
LANGUAGE · 4/50 repos · 9 files · 758 LOC
Depth 70 · HIGH
ESLint Core
QUALITY · 6/50 repos · 8 files · 15783 LOC
Depth 65 · HIGH
pnpm Core
BUILD_TOOL · 8/50 repos · 8 files · 80 LOC
Depth 80 · HIGH
Spring Data Recurring
LIBRARY · 2/50 repos · 8 files · 307 LOC
Depth 96 · HIGH
Hibernate Recurring
LIBRARY · 2/50 repos · 7 files · 164 LOC
Depth 62 · HIGH
Shell Core
LANGUAGE · 4/50 repos · 7 files · 322 LOC
Depth 70 · HIGH
Vitest Emerging
TESTING · 1/50 repos · 7 files · 280 LOC
Depth 57 · HIGH
SQL Core
LANGUAGE · 4/50 repos · 5 files · 804 LOC
Depth 70 · HIGH
Prettier Recurring
QUALITY · 2/50 repos · 4 files · 4162 LOC
Depth 69 · HIGH
Vue Emerging
LANGUAGE · 1/50 repos · 4 files · 244 LOC
Depth 70 · HIGH
Tailwind CSS Core
LIBRARY · 7/50 repos · 4 files · 279 LOC
Vite Emerging
BUILD_TOOL · 1/50 repos · 3 files · 18 LOC
Depth 57 · HIGH
Zod Recurring
LIBRARY · 3/50 repos · 3 files · 472 LOC
Depth 58 · HIGH
RabbitMQ Emerging
MESSAGE_BROKER · 1/50 repos · 3 files · 47 LOC
Depth 71 · HIGH
Apache Kafka Emerging
MESSAGE_BROKER · 1/50 repos · 3 files · 47 LOC
Depth 71 · HIGH
pip Recurring
BUILD_TOOL · 2/50 repos · 2 files · 20 LOC
Depth 80 · HIGH
Go Modules Recurring
BUILD_TOOL · 2/50 repos · 2 files · 20 LOC
Depth 80 · HIGH
Mockito Emerging
TESTING · 1/50 repos · 2 files · 46 LOC
Depth 39 · HIGH
GORM Emerging
LIBRARY · 1/50 repos · 1 files · 70 LOC
Depth 58 · HIGH
PostgreSQL Recurring
DATABASE · 2/50 repos · 1 files · 43 LOC
Depth 55 · HIGH
Requests Emerging
LIBRARY · 1/50 repos · 1 files · 49 LOC
Depth 54 · HIGH
Poetry Emerging
BUILD_TOOL · 1/50 repos · 1 files · 10 LOC
Depth 80 · HIGH
uv Emerging
BUILD_TOOL · 1/50 repos · 1 files · 10 LOC
Depth 80 · HIGH
Gin Emerging
FRAMEWORK · 1/50 repos · 1 files · 54 LOC
Depth 58 · HIGH
Bundler Emerging
BUILD_TOOL · 1/50 repos · 1 files · 10 LOC
Depth 80 · HIGH
Spring Security Emerging
SECURITY · 1/50 repos · 1 files · 61 LOC
Depth 58 · HIGH
C++ Emerging
LANGUAGE · 1/50 repos · 1 files · 97 LOC
Depth 70 · HIGH
debug Emerging
LIBRARY · 1/50 repos · 1 files · 138 LOC
Depth 54 · HIGH
Dockerfile Emerging
LANGUAGE · 1/50 repos · 1 files · 13 LOC
Depth 70 · HIGH
TOML Emerging
LANGUAGE · 1/50 repos · 1 files · 15 LOC
Depth 70 · HIGH
Nuxt Emerging
FRAMEWORK · 1/50 repos · 0 files · 0 LOC
python-dotenv Recurring
LIBRARY · 2/50 repos · 0 files · 0 LOC
Logback Core
OBSERVABILITY · 7/50 repos · 0 files · 0 LOC
Pydantic Emerging
LIBRARY · 1/50 repos · 0 files · 0 LOC
Apache Commons Emerging
LIBRARY · 1/50 repos · 0 files · 0 LOC
HTTPX Recurring
LIBRARY · 2/50 repos · 0 files · 0 LOC
SLF4J Core
LIBRARY · 8/50 repos · 0 files · 0 LOC
typing_extensions Emerging
LIBRARY · 1/50 repos · 0 files · 0 LOC
ENGINEERING HABITS
containerizationobserved
automated_testsobserved
documentationobserved
lintingobserved
formattingobserved
continuous_integrationobserved
Not observed ≠ does not know
PROJECT PORTFOLIO
just-icon Go Modules
remove-bg npm
namesage Next.js
pixiv-helper React
game-copycat React
java-bible Redis
ACTIVITY & OWNERSHIP
Active months 83
Commits 2106
Owner authored 100%
PRIMARY PROFILE — HR VIEW
Full-stackJava · TypeScript · MarkdownHigh ownership
In 30 sec: direction — full-stack, core — Java · TypeScript · Markdown, 50 repos 2014 — 2026. No LOC or files — stability only.
DEVELOPER SIGNATURE
JavaTypeScriptMarkdownLombokXMLHigh ownership
TECHNOLOGY EVOLUTION
2023
JavaScript · React
2024
TypeScript · Next.js
2025
TypeScript · PostgreSQL
2026
TS + Next
COMMUNITY / IMPACT not a skill rating
Stars 11371
Forks 2800
Watchers 576
EVERYTHING ABOVE IS TRACEABLE
50 repositories · 2106 commits · 3270 files · 565 evidence
Absence of a technology in the passport does not imply lack of experience