JF-D Jiangfei Duan
Interested in AI for system, efficient LLM training and serving!
EVIDENCE BASE
28
Repositories
216
Commits
24374
Files analyzed
30
Technologies
99
Evidence
28
Active months
Based on 28 repository passports · 13/28 current
ENGINEERING PROFILE
Frontend38%
Backend69%
Testing53%
DevOps30%
CORE TECHNOLOGIES
HR: name + projects · Lead: + files/LOC · persistence Core≥4
C++ Core
LANGUAGE · 6/28 repos · 6775 files · 1742740 LOC
Depth 70 · HIGH
C Core
LANGUAGE · 5/28 repos · 2841 files · 280053 LOC
Depth 70 · HIGH
TypeScript Core
LANGUAGE · 4/28 repos · 946 files · 495850 LOC
Depth 85 · HIGH
Python Core
LANGUAGE · 8/28 repos · 724 files · 131797 LOC
Depth 70 · HIGH
Shell Core
LANGUAGE · 6/28 repos · 121 files · 15747 LOC
Depth 70 · HIGH
Markdown Core
LANGUAGE · 13/28 repos · 109 files · 10465 LOC
Depth 70 · HIGH
NumPy Core
LIBRARY · 6/28 repos · 96 files · 25384 LOC
Depth 85 · HIGH
pytest Recurring
TESTING · 2/28 repos · 81 files · 18006 LOC
Depth 74 · HIGH
JSON Core
LANGUAGE · 5/28 repos · 76 files · 1457 LOC
Depth 70 · HIGH
XML Recurring
LANGUAGE · 3/28 repos · 74 files · 6392 LOC
Depth 70 · HIGH
Redis Core
CACHE · 4/28 repos · 31 files · 81656 LOC
Depth 69 · HIGH
YAML Recurring
LANGUAGE · 3/28 repos · 7 files · 476 LOC
Depth 70 · HIGH
JavaScript Recurring
LANGUAGE · 2/28 repos · 6 files · 940 LOC
Depth 70 · HIGH
Pydantic Emerging
LIBRARY · 1/28 repos · 6 files · 385 LOC
Depth 78 · HIGH
debug Emerging
LIBRARY · 1/28 repos · 5 files · 1835 LOC
Depth 74 · HIGH
Next.js Recurring
FRAMEWORK · 2/28 repos · 4 files · 7636 LOC
Depth 58 · HIGH
Laravel Pint Emerging
QUALITY · 1/28 repos · 4 files · 651 LOC
Depth 70 · HIGH
RabbitMQ Emerging
MESSAGE_BROKER · 1/28 repos · 4 files · 2834 LOC
Depth 77 · HIGH
MongoDB Recurring
DATABASE · 2/28 repos · 3 files · 1669 LOC
Depth 45 · HIGH
Requests Emerging
LIBRARY · 1/28 repos · 2 files · 203 LOC
Depth 66 · HIGH
pip Recurring
BUILD_TOOL · 2/28 repos · 2 files · 20 LOC
Depth 80 · HIGH
pandas Recurring
LIBRARY · 2/28 repos · 2 files · 879 LOC
Depth 58 · HIGH
Cypress Emerging
TESTING · 1/28 repos · 2 files · 9390 LOC
Depth 62 · HIGH
TOML Emerging
LANGUAGE · 1/28 repos · 2 files · 40 LOC
Depth 70 · HIGH
Poetry Emerging
BUILD_TOOL · 1/28 repos · 1 files · 10 LOC
Depth 80 · HIGH
AWS SDK Emerging
CLOUD · 1/28 repos · 1 files · 172 LOC
Depth 58 · HIGH
npm Emerging
BUILD_TOOL · 1/28 repos · 1 files · 10 LOC
Depth 80 · HIGH
Bundler Emerging
BUILD_TOOL · 1/28 repos · 1 files · 10 LOC
Depth 80 · HIGH
Dockerfile Emerging
LANGUAGE · 1/28 repos · 1 files · 179 LOC
Depth 70 · HIGH
Apache Kafka Emerging
MESSAGE_BROKER · 1/28 repos · 1 files · 1 LOC
Depth 45 · HIGH
ENGINEERING HABITS
containerizationobserved
automated_testsobserved
documentationobserved
lintingobserved
formattingabsent
continuous_integrationobserved
Not observed ≠ does not know
PROJECT PORTFOLIO
Parcae NumPy
Proteus NumPy
2018-CCF-BDCI Markdown
Operation-System Shell
Face-Recognition Markdown
CS231n-2017Spring NumPy
Computer-Architecture Redis
ml-class Markdown
ACTIVITY & OWNERSHIP
Active months 28
Commits 216
Owner authored 100%
PRIMARY PROFILE — HR VIEW
Full-stackC++ · C · TypeScriptHigh ownership
In 30 sec: direction — full-stack, core — C++ · C · TypeScript, 28 repos 2017 — 2026. No LOC or files — stability only.
DEVELOPER SIGNATURE
C++CTypeScriptPythonShellHigh ownership
TECHNOLOGY EVOLUTION
2023
JavaScript · React
2024
TypeScript · Next.js
2025
TypeScript · PostgreSQL
2026
TS + Next
COMMUNITY / IMPACT not a skill rating
Stars 59
Forks 18
Watchers 4
EVERYTHING ABOVE IS TRACEABLE
28 repositories · 216 commits · 24374 files · 99 evidence
Absence of a technology in the passport does not imply lack of experience