JE4NVRG Jean Carlos Vargas
Senior Full-Stack Product Engineer & Technical Founder building SaaS, AI workflows and reliable production systems.
EVIDENCE BASE
87
Repositories
1533
Commits
4209
Files analyzed
51
Technologies
331
Evidence
27
Active months
Based on 87 repository passports · 48/87 current
ENGINEERING PROFILE
Frontend70%
Backend25%
Testing45%
DevOps62%
CORE TECHNOLOGIES
HR: name + projects · Lead: + files/LOC · persistence Core≥4
TypeScript Core
LANGUAGE · 18/87 repos · 2222 files · 395052 LOC
Depth 70 · HIGH
Vitest Core
TESTING · 5/87 repos · 603 files · 130837 LOC
Depth 45 · HIGH
React Core
FRAMEWORK · 18/87 repos · 439 files · 94134 LOC
Depth 74 · HIGH
JSON Core
LANGUAGE · 29/87 repos · 334 files · 437480 LOC
Depth 70 · HIGH
Next.js Core
FRAMEWORK · 10/87 repos · 287 files · 59675 LOC
Depth 53 · HIGH
Markdown Core
LANGUAGE · 34/87 repos · 231 files · 27276 LOC
Depth 70 · HIGH
JavaScript Core
LANGUAGE · 30/87 repos · 138 files · 8400 LOC
Depth 70 · HIGH
SQL Core
LANGUAGE · 5/87 repos · 113 files · 3794 LOC
Depth 70 · HIGH
Zod Core
LIBRARY · 5/87 repos · 72 files · 17895 LOC
C++ Recurring
LANGUAGE · 2/87 repos · 32 files · 1212 LOC
Depth 70 · HIGH
ESLint Core
QUALITY · 15/87 repos · 30 files · 107427 LOC
Depth 65 · HIGH
npm Core
BUILD_TOOL · 26/87 repos · 26 files · 260 LOC
Depth 80 · HIGH
YAML Core
LANGUAGE · 8/87 repos · 20 files · 9656 LOC
Depth 70 · HIGH
XML Core
LANGUAGE · 5/87 repos · 19 files · 361 LOC
Depth 70 · HIGH
debug Recurring
LIBRARY · 2/87 repos · 12 files · 2682 LOC
Depth 74 · HIGH
Express Recurring
FRAMEWORK · 2/87 repos · 12 files · 1379 LOC
Depth 58 · HIGH
Rust Emerging
LANGUAGE · 1/87 repos · 11 files · 2462 LOC
Depth 70 · HIGH
TOML Core
LANGUAGE · 5/87 repos · 11 files · 181 LOC
Depth 70 · HIGH
Python Core
LANGUAGE · 4/87 repos · 10 files · 1486 LOC
Depth 70 · HIGH
PostgreSQL Recurring
DATABASE · 3/87 repos · 9 files · 9545 LOC
Depth 70 · HIGH
React Router Recurring
LIBRARY · 2/87 repos · 9 files · 3125 LOC
Prettier Core
QUALITY · 6/87 repos · 9 files · 43255 LOC
Depth 61 · HIGH
Swift Recurring
LANGUAGE · 2/87 repos · 8 files · 78 LOC
Depth 70 · HIGH
Gradle Core
LANGUAGE · 4/87 repos · 8 files · 208 LOC
Depth 70 · HIGH
Vite Core
BUILD_TOOL · 5/87 repos · 7 files · 224 LOC
Depth 36 · HIGH
Shell Recurring
LANGUAGE · 3/87 repos · 7 files · 278 LOC
Depth 70 · HIGH
PowerShell Recurring
LANGUAGE · 2/87 repos · 5 files · 237 LOC
Depth 70 · HIGH
Flutter Recurring
FRAMEWORK · 2/87 repos · 4 files · 289 LOC
Depth 62 · HIGH
Dart Recurring
LANGUAGE · 2/87 repos · 4 files · 304 LOC
Depth 70 · HIGH
Redis Recurring
CACHE · 3/87 repos · 4 files · 29523 LOC
Depth 65 · HIGH
Dockerfile Recurring
LANGUAGE · 2/87 repos · 4 files · 103 LOC
Depth 70 · HIGH
NumPy Emerging
LIBRARY · 1/87 repos · 3 files · 375 LOC
Depth 66 · HIGH
Axios Emerging
LIBRARY · 1/87 repos · 3 files · 262 LOC
Depth 66 · HIGH
Tailwind CSS Core
LIBRARY · 11/87 repos · 3 files · 245 LOC
pandas Emerging
LIBRARY · 1/87 repos · 3 files · 375 LOC
Depth 66 · HIGH
Serde Emerging
LIBRARY · 1/87 repos · 2 files · 411 LOC
Depth 62 · HIGH
MongoDB Recurring
DATABASE · 2/87 repos · 2 files · 19339 LOC
Depth 61 · HIGH
Kotlin Recurring
LANGUAGE · 2/87 repos · 2 files · 8 LOC
Depth 70 · HIGH
Tokio Emerging
LIBRARY · 1/87 repos · 1 files · 193 LOC
Depth 58 · HIGH
pip Emerging
BUILD_TOOL · 1/87 repos · 1 files · 10 LOC
Depth 80 · HIGH
Reqwest Emerging
LIBRARY · 1/87 repos · 1 files · 193 LOC
Depth 58 · HIGH
Cargo Emerging
BUILD_TOOL · 1/87 repos · 1 files · 10 LOC
Depth 80 · HIGH
Yarn Emerging
BUILD_TOOL · 1/87 repos · 1 files · 10 LOC
Depth 80 · HIGH
pnpm Emerging
BUILD_TOOL · 1/87 repos · 1 files · 10 LOC
Depth 80 · HIGH
Elasticsearch Emerging
DATABASE · 1/87 repos · 1 files · 10916 LOC
Depth 61 · HIGH
RabbitMQ Emerging
MESSAGE_BROKER · 1/87 repos · 1 files · 13149 LOC
Depth 61 · HIGH
python-dotenv Emerging
LIBRARY · 1/87 repos · 0 files · 0 LOC
Jest Core
TESTING · 4/87 repos · 0 files · 0 LOC
pytest Emerging
TESTING · 1/87 repos · 0 files · 0 LOC
Testing Library Core
TESTING · 6/87 repos · 0 files · 0 LOC
flutter_lints Recurring
QUALITY · 2/87 repos · 0 files · 0 LOC
ENGINEERING HABITS
containerizationobserved
automated_testsobserved
documentationobserved
lintingobserved
formattingobserved
continuous_integrationobserved
Not observed ≠ does not know
PROJECT PORTFOLIO
ai-agents-saas npm
swafe-audit-tool npm
Minha-primeira-pagina-de-captura UNKNOWN
projetoSlideShow JavaScript
ProjetoUrnaEletronica JavaScript
ACTIVITY & OWNERSHIP
Active months 27
Commits 1533
Owner authored 100%
PRIMARY PROFILE — HR VIEW
FrontendTypeScript · Vitest · ReactHigh ownership
In 30 sec: direction — frontend, core — TypeScript · Vitest · React, 87 repos 2020 — 2026. No LOC or files — stability only.
DEVELOPER SIGNATURE
TypeScriptVitestReactJSONNext.jsHigh ownership
TECHNOLOGY EVOLUTION
2023
JavaScript · React
2024
TypeScript · Next.js
2025
TypeScript · PostgreSQL
2026
TS + Next
COMMUNITY / IMPACT not a skill rating
Stars 98
Forks 1
Watchers 29
EVERYTHING ABOVE IS TRACEABLE
87 repositories · 1533 commits · 4209 files · 331 evidence
Absence of a technology in the passport does not imply lack of experience