On-Device LLM Chat Agent
Quantized LLM + tool use for private, offline chat (React Native + Python).
DARWIN CHEN
AI-inclined web developer
I build clean, fast, human-centered interfaces and data-aware tools—favoring clarity, performance, and quietly sophisticated interactions.
01 — Experience
Timeline
-
Software Developer Intern — Ericsson
– · Ottawa, ON- React + OpenSearch dashboards for Jenkins pipelines (faster stage-level triage).
- Python AST validator for error IDs (prevents collisions, enforces conventions).
- Bulk Jenkins job tooling to improve CI hygiene.
- Unsupervised fault classification (Drain3, MiniLM, HDBSCAN).
- LLM failure-cause recognizer (llama.cpp) with structured JSON outputs.
-
Web Developer & Manager — Pathfinders
– · Fredericton, NB- UI improvements and site maintenance across PHP/HTML/CSS apps.
- Translation workflow via custom Google Apps Script plugins.
- Analytics/Ads/Tag Manager; experience with Cloudflare, DreamHost, WordPress.
-
Teaching Assistant — Queen’s University
– · Kingston, ON- CISC 151 (Elements of Computing with Data Analytics) & CISC 203 (Discrete Structures II).
02 — Projects
Selected Work
Fishing Data Mapper
Scraped lake/species data → interactive React + Leaflet map.
03 — About
Background
Education
- School
- Queen’s University
- Degree
- Bachelor of Computing (AI Specialization)
- Dates
- – • 1-year internship
Leadership
- Perception Integration Team Lead — Queen’s AutoDrive (Lv.4 AV platform, MATLAB 3D sims), – .
- Consulting Design Team Manager — QMIND (LLM backend, LangChain optimization), – .
Focus Areas
LLM tooling & private inference
Front-end performance & UX
Data / observability pipelines
04 — Stack
Tools & Tech
Languages
Python
JavaScript
TypeScript
PHP
HTML
CSS
MATLAB
SQL
Frameworks & UI
React
React Native
Leaflet
WordPress
OpenSearch Dashboards
LLM / ML
llama.cpp
LangChain
MiniLM
HDBSCAN
Drain3
DevOps & Tools
Jenkins
Cloudflare
Google Apps Script
DreamHost
Git/GitHub
Analytics/Tag Manager