jperl Jon Perl
ceo @ qa wolf
EVIDENCE BASE
50
Repositories
613
Commits
874
Files analyzed
26
Technologies
171
Evidence
51
Active months
Based on 50 repository passports · 39/50 current
ENGINEERING PROFILE
Frontend89%
Backend41%
Testing17%
DevOps43%
CORE TECHNOLOGIES
HR: name + projects · Lead: + files/LOC · persistence Core≥4
JavaScript Core
LANGUAGE · 32/50 repos · 233 files · 29800 LOC
Depth 70 · HIGH
JSON Core
LANGUAGE · 27/50 repos · 54 files · 8421 LOC
Depth 70 · HIGH
Python Recurring
LANGUAGE · 3/50 repos · 52 files · 7636 LOC
Depth 70 · HIGH
Markdown Core
LANGUAGE · 33/50 repos · 42 files · 725 LOC
Depth 70 · HIGH
NumPy Recurring
LIBRARY · 3/50 repos · 34 files · 5163 LOC
Depth 85 · HIGH
MongoDB Core
DATABASE · 12/50 repos · 19 files · 1541 LOC
Depth 65 · HIGH
npm Core
BUILD_TOOL · 14/50 repos · 14 files · 140 LOC
Depth 80 · HIGH
Shell Recurring
LANGUAGE · 2/50 repos · 11 files · 80 LOC
Depth 70 · HIGH
TypeScript Core
LANGUAGE · 5/50 repos · 10 files · 2725 LOC
Depth 70 · HIGH
pandas Recurring
LIBRARY · 2/50 repos · 9 files · 436 LOC
Depth 85 · HIGH
Next.js Recurring
FRAMEWORK · 2/50 repos · 8 files · 15040 LOC
Depth 78 · HIGH
YAML Core
LANGUAGE · 4/50 repos · 6 files · 82 LOC
Depth 70 · HIGH
ESLint Recurring
QUALITY · 3/50 repos · 4 files · 4377 LOC
Depth 58 · HIGH
Lodash Emerging
LIBRARY · 1/50 repos · 3 files · 101 LOC
Depth 66 · HIGH
pip Recurring
BUILD_TOOL · 3/50 repos · 3 files · 30 LOC
Depth 80 · HIGH
Prettier Emerging
QUALITY · 1/50 repos · 3 files · 4294 LOC
Depth 69 · HIGH
Playwright Emerging
TESTING · 1/50 repos · 3 files · 90 LOC
Depth 73 · HIGH
RabbitMQ Emerging
MESSAGE_BROKER · 1/50 repos · 3 files · 18375 LOC
Depth 73 · HIGH
debug Emerging
LIBRARY · 1/50 repos · 2 files · 25 LOC
Depth 52 · HIGH
Express Recurring
FRAMEWORK · 2/50 repos · 2 files · 70 LOC
Depth 58 · HIGH
React Emerging
FRAMEWORK · 1/50 repos · 2 files · 68 LOC
Depth 66 · HIGH
Yarn Emerging
BUILD_TOOL · 1/50 repos · 1 files · 10 LOC
Depth 80 · HIGH
Socket.IO Emerging
LIBRARY · 1/50 repos · 1 files · 16 LOC
Depth 40 · HIGH
C++ Emerging
LANGUAGE · 1/50 repos · 1 files · 12 LOC
Depth 70 · HIGH
TOML Emerging
LANGUAGE · 1/50 repos · 1 files · 5 LOC
Depth 70 · HIGH
Tailwind CSS Emerging
LIBRARY · 1/50 repos · 0 files · 0 LOC
ENGINEERING HABITS
containerizationabsent
automated_testsobserved
documentationobserved
lintingobserved
formattingobserved
continuous_integrationobserved
Not observed ≠ does not know
PROJECT PORTFOLIO
stock2vec Markdown
paper MongoDB
famous-meteor Markdown
meteor-phonegap-oauth Markdown
typed-graphql npm
ACTIVITY & OWNERSHIP
Active months 51
Commits 613
Owner authored 100%
PRIMARY PROFILE — HR VIEW
FrontendJavaScript · JSON · PythonHigh ownership
In 30 sec: direction — frontend, core — JavaScript · JSON · Python, 50 repos 2013 — 2025. No LOC or files — stability only.
DEVELOPER SIGNATURE
JavaScriptJSONPythonMarkdownNumPyHigh ownership
TECHNOLOGY EVOLUTION
2023
JavaScript · React
2024
TypeScript · Next.js
2025
TypeScript · PostgreSQL
2026
TS + Next
COMMUNITY / IMPACT not a skill rating
Stars 358
Forks 103
Watchers 115
EVERYTHING ABOVE IS TRACEABLE
50 repositories · 613 commits · 874 files · 171 evidence
Absence of a technology in the passport does not imply lack of experience