mahirhir Arne Rei
Independent. Local-first developer tools, and a verification substrate for effects that have to be undoable. Rust. Limits written down before features.
EVIDENCE BASE
50
Repositories
5298
Commits
1788
Files analyzed
22
Technologies
41
Evidence
13
Active months
Based on 50 repository passports · 7/50 current
ENGINEERING PROFILE
Frontend42%
Backend42%
Testing14%
DevOps14%
CORE TECHNOLOGIES
HR: name + projects · Lead: + files/LOC · persistence Core≥4
Rust Emerging
LANGUAGE · 1/50 repos · 288 files · 225128 LOC
Depth 70 · HIGH
Markdown Core
LANGUAGE · 7/50 repos · 107 files · 25644 LOC
Depth 70 · HIGH
JSON Core
LANGUAGE · 4/50 repos · 34 files · 16618 LOC
Depth 70 · HIGH
Serde Emerging
LIBRARY · 1/50 repos · 31 files · 19124 LOC
Depth 93 · HIGH
YAML Recurring
LANGUAGE · 3/50 repos · 30 files · 3830 LOC
Depth 70 · HIGH
JavaScript Recurring
LANGUAGE · 2/50 repos · 18 files · 3726 LOC
Depth 70 · HIGH
TOML Emerging
LANGUAGE · 1/50 repos · 13 files · 1104 LOC
Depth 70 · HIGH
Shell Recurring
LANGUAGE · 2/50 repos · 11 files · 1193 LOC
Depth 70 · HIGH
debug Emerging
LIBRARY · 1/50 repos · 10 files · 11301 LOC
Depth 96 · HIGH
Python Recurring
LANGUAGE · 2/50 repos · 10 files · 2124 LOC
Depth 70 · HIGH
PowerShell Recurring
LANGUAGE · 2/50 repos · 9 files · 527 LOC
Depth 70 · HIGH
Redis Recurring
CACHE · 2/50 repos · 3 files · 10962 LOC
Depth 65 · HIGH
TypeScript Recurring
LANGUAGE · 2/50 repos · 3 files · 128 LOC
Depth 54 · HIGH
Tokio Emerging
LIBRARY · 1/50 repos · 2 files · 1129 LOC
Depth 62 · HIGH
Apache Kafka Emerging
MESSAGE_BROKER · 1/50 repos · 2 files · 2812 LOC
Depth 65 · HIGH
Cargo Emerging
BUILD_TOOL · 1/50 repos · 1 files · 10 LOC
Depth 80 · HIGH
Prettier Emerging
QUALITY · 1/50 repos · 1 files · 8150 LOC
Depth 65 · HIGH
Playwright Emerging
TESTING · 1/50 repos · 1 files · 1264 LOC
Depth 58 · HIGH
npm Emerging
BUILD_TOOL · 1/50 repos · 1 files · 10 LOC
Depth 80 · HIGH
Next.js Emerging
FRAMEWORK · 1/50 repos · 1 files · 2739 LOC
Depth 58 · HIGH
Clap Emerging
LIBRARY · 1/50 repos · 0 files · 0 LOC
Tracing Emerging
OBSERVABILITY · 1/50 repos · 0 files · 0 LOC
ENGINEERING HABITS
containerizationabsent
automated_testsobserved
documentationobserved
lintingabsent
formattingabsent
continuous_integrationobserved
Not observed ≠ does not know
PROJECT PORTFOLIO
unanswered-approval Markdown
proof-dashboard Markdown
japan-readiness-index Markdown
glovrex-anchors Markdown
worktrunk debug
claude-router PowerShell
ai UNKNOWN
ACTIVITY & OWNERSHIP
Active months 13
Commits 5298
Owner authored 100%
PRIMARY PROFILE — HR VIEW
BackendRust · Markdown · JSONHigh ownership
In 30 sec: direction — backend, core — Rust · Markdown · JSON, 50 repos 2025 — 2026. No LOC or files — stability only.
DEVELOPER SIGNATURE
RustMarkdownJSONSerdeYAMLHigh ownership
TECHNOLOGY EVOLUTION
2023
JavaScript · React
2024
TypeScript · Next.js
2025
TypeScript · PostgreSQL
2026
TS + Next
COMMUNITY / IMPACT not a skill rating
Stars 79
Forks 0
Watchers 1
EVERYTHING ABOVE IS TRACEABLE
50 repositories · 5298 commits · 1788 files · 41 evidence
Absence of a technology in the passport does not imply lack of experience