mfisher87 Matt Fisher
Scientific Software Developer at UC Berkeley Schmidt Center for Data Science and Environment. Volunteer open source developer and maintainer. 🏳️🌈
EVIDENCE BASE
50
Repositories
2273
Commits
1771
Files analyzed
32
Technologies
219
Evidence
80
Active months
Based on 50 repository passports · 50/50 current
ENGINEERING PROFILE
Frontend18%
Backend34%
Testing18%
DevOps28%
CORE TECHNOLOGIES
HR: name + projects · Lead: + files/LOC · persistence Core≥4
TypeScript Core
LANGUAGE · 7/50 repos · 351 files · 53205 LOC
Depth 58 · HIGH
Markdown Core
LANGUAGE · 43/50 repos · 244 files · 13500 LOC
Depth 70 · HIGH
React Recurring
FRAMEWORK · 2/50 repos · 186 files · 28569 LOC
Depth 58 · HIGH
Python Core
LANGUAGE · 17/50 repos · 160 files · 15660 LOC
Depth 70 · HIGH
YAML Core
LANGUAGE · 29/50 repos · 141 files · 28437 LOC
Depth 70 · HIGH
JSON Core
LANGUAGE · 8/50 repos · 102 files · 10113 LOC
Depth 70 · HIGH
JavaScript Core
LANGUAGE · 7/50 repos · 35 files · 1249 LOC
Depth 70 · HIGH
TOML Core
LANGUAGE · 20/50 repos · 30 files · 1325 LOC
Depth 70 · HIGH
pytest Core
TESTING · 5/50 repos · 23 files · 2091 LOC
Depth 74 · HIGH
ESLint Core
QUALITY · 5/50 repos · 17 files · 44195 LOC
Depth 69 · HIGH
Shell Core
LANGUAGE · 9/50 repos · 16 files · 210 LOC
Depth 70 · HIGH
Prettier Core
QUALITY · 5/50 repos · 13 files · 38687 LOC
Depth 56 · HIGH
Poetry Core
BUILD_TOOL · 8/50 repos · 8 files · 80 LOC
Depth 80 · HIGH
Next.js Recurring
FRAMEWORK · 2/50 repos · 7 files · 1467 LOC
Depth 54 · HIGH
npm Core
BUILD_TOOL · 7/50 repos · 7 files · 70 LOC
Depth 80 · HIGH
uv Core
BUILD_TOOL · 6/50 repos · 6 files · 60 LOC
Depth 80 · HIGH
Playwright Emerging
TESTING · 1/50 repos · 6 files · 547 LOC
Depth 53 · HIGH
Dockerfile Core
LANGUAGE · 4/50 repos · 4 files · 107 LOC
Depth 70 · HIGH
Requests Recurring
LIBRARY · 2/50 repos · 3 files · 1263 LOC
Depth 49 · HIGH
Pydantic Emerging
LIBRARY · 1/50 repos · 3 files · 2222 LOC
Depth 70 · HIGH
Yarn Recurring
BUILD_TOOL · 2/50 repos · 2 files · 20 LOC
Depth 80 · HIGH
pnpm Recurring
BUILD_TOOL · 2/50 repos · 2 files · 20 LOC
Depth 80 · HIGH
Vitest Emerging
TESTING · 1/50 repos · 2 files · 338 LOC
Depth 41 · HIGH
debug Emerging
LIBRARY · 1/50 repos · 2 files · 3541 LOC
Depth 62 · HIGH
Click Emerging
LIBRARY · 1/50 repos · 1 files · 35 LOC
Depth 52 · HIGH
NumPy Emerging
LIBRARY · 1/50 repos · 1 files · 1969 LOC
Depth 37 · HIGH
Lodash Emerging
LIBRARY · 1/50 repos · 1 files · 219 LOC
Depth 58 · HIGH
Jest Recurring
TESTING · 3/50 repos · 1 files · 138 LOC
Vue Emerging
FRAMEWORK · 1/50 repos · 1 files · 14 LOC
Depth 43 · HIGH
Vite Emerging
BUILD_TOOL · 1/50 repos · 1 files · 5 LOC
Depth 36 · HIGH
pandas Emerging
LIBRARY · 1/50 repos · 1 files · 145 LOC
Depth 54 · HIGH
Webpack Recurring
BUILD_TOOL · 2/50 repos · 0 files · 0 LOC
ENGINEERING HABITS
containerizationobserved
automated_testsobserved
documentationobserved
lintingobserved
formattingobserved
continuous_integrationobserved
Not observed ≠ does not know
PROJECT PORTFOLIO
presentation-jupytercon2025 Dockerfile
mattz.cool TOML
presentation-self TOML
vcombo-sysex-translator Markdown
presentation-agu2025 TOML
presentation-cng2025 TOML
ACTIVITY & OWNERSHIP
Active months 80
Commits 2273
Owner authored 100%
PRIMARY PROFILE — HR VIEW
FrontendTypeScript · Markdown · ReactHigh ownership
In 30 sec: direction — frontend, core — TypeScript · Markdown · React, 50 repos 2013 — 2026. No LOC or files — stability only.
DEVELOPER SIGNATURE
TypeScriptMarkdownReactPythonYAMLHigh ownership
TECHNOLOGY EVOLUTION
2023
JavaScript · React
2024
TypeScript · Next.js
2025
TypeScript · PostgreSQL
2026
TS + Next
COMMUNITY / IMPACT not a skill rating
Stars 27
Forks 5
Watchers 32
EVERYTHING ABOVE IS TRACEABLE
50 repositories · 2273 commits · 1771 files · 219 evidence
Absence of a technology in the passport does not imply lack of experience