mitsuhiko Armin Ronacher
Software developer and Open Source nut. Creator of the Flask framework. Founder of @earendil-works. Other things of interest: @pallets and @getsentry
EVIDENCE BASE
50
Repositories
8438
Commits
7847
Files analyzed
58
Technologies
510
Evidence
224
Active months
Based on 50 repository passports · 49/50 current
ENGINEERING PROFILE
Frontend51%
Backend81%
Testing26%
DevOps63%
CORE TECHNOLOGIES
HR: name + projects · Lead: + files/LOC · persistence Core≥4
Rust Core
LANGUAGE · 17/50 repos · 901 files · 289093 LOC
Depth 70 · HIGH
TOML Core
LANGUAGE · 21/50 repos · 887 files · 8716 LOC
Depth 70 · HIGH
YAML Core
LANGUAGE · 26/50 repos · 808 files · 8178 LOC
Depth 70 · HIGH
Markdown Core
LANGUAGE · 36/50 repos · 548 files · 65355 LOC
Depth 70 · HIGH
Python Core
LANGUAGE · 23/50 repos · 234 files · 45039 LOC
Depth 70 · HIGH
TypeScript Core
LANGUAGE · 16/50 repos · 203 files · 74847 LOC
Depth 70 · HIGH
Go Core
LANGUAGE · 5/50 repos · 143 files · 42760 LOC
Depth 70 · HIGH
JavaScript Core
LANGUAGE · 15/50 repos · 110 files · 44034 LOC
Depth 70 · HIGH
JSON Core
LANGUAGE · 21/50 repos · 75 files · 31926 LOC
Depth 70 · HIGH
Shell Core
LANGUAGE · 12/50 repos · 62 files · 4101 LOC
Depth 70 · HIGH
Serde Core
LIBRARY · 10/50 repos · 45 files · 15218 LOC
Depth 78 · HIGH
Werkzeug Recurring
LIBRARY · 3/50 repos · 34 files · 10583 LOC
Depth 78 · HIGH
debug Core
LIBRARY · 6/50 repos · 33 files · 10978 LOC
Depth 85 · HIGH
React Recurring
FRAMEWORK · 3/50 repos · 32 files · 4683 LOC
Depth 74 · HIGH
Redis Core
CACHE · 6/50 repos · 21 files · 41838 LOC
Depth 81 · HIGH
Cargo Core
BUILD_TOOL · 17/50 repos · 17 files · 170 LOC
Depth 80 · HIGH
PostgreSQL Recurring
DATABASE · 3/50 repos · 16 files · 39299 LOC
Depth 81 · HIGH
pytest Core
TESTING · 5/50 repos · 15 files · 2969 LOC
Depth 37 · HIGH
Next.js Core
FRAMEWORK · 5/50 repos · 13 files · 22234 LOC
Depth 37 · HIGH
C Recurring
LANGUAGE · 2/50 repos · 12 files · 2265 LOC
Depth 70 · HIGH
Jinja2 Core
LIBRARY · 5/50 repos · 12 files · 4180 LOC
Depth 58 · HIGH
XML Recurring
LANGUAGE · 2/50 repos · 12 files · 76929 LOC
Depth 70 · HIGH
npm Core
BUILD_TOOL · 11/50 repos · 11 files · 110 LOC
Depth 80 · HIGH
Tokio Core
LIBRARY · 5/50 repos · 9 files · 1890 LOC
Depth 62 · HIGH
GORM Emerging
LIBRARY · 1/50 repos · 8 files · 1873 LOC
Depth 74 · HIGH
MarkupSafe Recurring
LIBRARY · 3/50 repos · 7 files · 2063 LOC
Depth 58 · HIGH
lxml Recurring
LIBRARY · 3/50 repos · 7 files · 3684 LOC
Depth 74 · HIGH
Flask Recurring
FRAMEWORK · 3/50 repos · 7 files · 733 LOC
Depth 70 · HIGH
SQLAlchemy Recurring
LIBRARY · 2/50 repos · 6 files · 2122 LOC
Depth 78 · HIGH
Java Emerging
LANGUAGE · 1/50 repos · 6 files · 741 LOC
Depth 70 · HIGH
Prettier Core
QUALITY · 5/50 repos · 6 files · 7654 LOC
Depth 47 · HIGH
Poetry Core
BUILD_TOOL · 5/50 repos · 5 files · 50 LOC
Depth 80 · HIGH
ESLint Recurring
QUALITY · 3/50 repos · 5 files · 18168 LOC
Depth 65 · HIGH
Vite Recurring
BUILD_TOOL · 3/50 repos · 5 files · 309 LOC
Depth 51 · HIGH
SQL Emerging
LANGUAGE · 1/50 repos · 4 files · 182 LOC
Depth 70 · HIGH
Go Modules Core
BUILD_TOOL · 4/50 repos · 4 files · 40 LOC
Depth 80 · HIGH
Click Recurring
LIBRARY · 2/50 repos · 3 files · 942 LOC
Depth 66 · HIGH
uv Recurring
BUILD_TOOL · 3/50 repos · 3 files · 30 LOC
Depth 80 · HIGH
GraphQL Emerging
LIBRARY · 1/50 repos · 3 files · 2208 LOC
Depth 66 · HIGH
Playwright Recurring
TESTING · 2/50 repos · 3 files · 461 LOC
MongoDB Recurring
DATABASE · 3/50 repos · 3 files · 1176 LOC
Depth 65 · HIGH
PHP Emerging
LANGUAGE · 1/50 repos · 3 files · 844 LOC
Depth 70 · HIGH
Tokio Util Emerging
LIBRARY · 1/50 repos · 2 files · 409 LOC
Depth 66 · HIGH
Axios Emerging
LIBRARY · 1/50 repos · 2 files · 849 LOC
Depth 62 · HIGH
Axum Recurring
FRAMEWORK · 2/50 repos · 2 files · 30 LOC
Depth 44 · HIGH
C++ Emerging
LANGUAGE · 1/50 repos · 2 files · 557 LOC
Depth 70 · HIGH
Dockerfile Emerging
LANGUAGE · 1/50 repos · 2 files · 28 LOC
Depth 70 · HIGH
Django Recurring
FRAMEWORK · 2/50 repos · 2 files · 1405 LOC
Depth 58 · HIGH
Bytes Emerging
LIBRARY · 1/50 repos · 1 files · 92 LOC
Depth 58 · HIGH
pip Emerging
BUILD_TOOL · 1/50 repos · 1 files · 10 LOC
Depth 80 · HIGH
Actix Web Emerging
FRAMEWORK · 1/50 repos · 1 files · 83 LOC
Depth 58 · HIGH
Blinker Emerging
LIBRARY · 1/50 repos · 1 files · 14 LOC
Depth 43 · HIGH
Elasticsearch Emerging
DATABASE · 1/50 repos · 1 files · 3005 LOC
Depth 65 · HIGH
itsdangerous Emerging
LIBRARY · 1/50 repos · 1 files · 86 LOC
Depth 58 · HIGH
Express Emerging
FRAMEWORK · 1/50 repos · 1 files · 68 LOC
Depth 58 · HIGH
Pipenv Emerging
BUILD_TOOL · 1/50 repos · 1 files · 10 LOC
Depth 80 · HIGH
RabbitMQ Emerging
MESSAGE_BROKER · 1/50 repos · 1 files · 255 LOC
Depth 65 · HIGH
Clap Core
LIBRARY · 6/50 repos · 0 files · 0 LOC
ENGINEERING HABITS
containerizationobserved
automated_testsobserved
documentationobserved
lintingobserved
formattingobserved
continuous_integrationobserved
Not observed ≠ does not know
PROJECT PORTFOLIO
insta Serde
minijinja Serde
agent-stuff npm
pipsi Click
similar Cargo
zine PostgreSQL
pluginbase Pipenv
deser TypeScript
ACTIVITY & OWNERSHIP
Active months 224
Commits 8438
Owner authored 3%
PRIMARY PROFILE — HR VIEW
BackendRust · TOML · YAMLTeam
In 30 sec: direction — backend, core — Rust · TOML · YAML, 50 repos 2007 — 2026. No LOC or files — stability only.
DEVELOPER SIGNATURE
RustTOMLYAMLMarkdownPythonTeam
TECHNOLOGY EVOLUTION
2023
JavaScript · React
2024
TypeScript · Next.js
2025
TypeScript · PostgreSQL
2026
TS + Next
COMMUNITY / IMPACT not a skill rating
Stars 23470
Forks 2059
Watchers 375
EVERYTHING ABOVE IS TRACEABLE
50 repositories · 8438 commits · 7847 files · 510 evidence
Absence of a technology in the passport does not imply lack of experience