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ONE WORLD. EIGHT PERSONALITIES.WALKING STUDY
cjy BASED IN HONG KONG
Bringing a little world to life…
PERSONAL PORTFOLIO / 2026ART MEETS ALGORITHM

Hello, I’m

CHAN
JEUN YU.

Data, code &
a little imagination.

Explore my work
CONNECTING THE DOTS

Applied AI.
Human curiosity.

I turn complex ideas into thoughtful, useful digital experiences.

MEET YOUR COMPANION CRIMSON / 03
↔ DRAG TO ROTATE
EIGHT LEGS. ENDLESS POSSIBILITIES.
01 / A LITTLE ABOUT MECRIMSON
RED / SILK

Curiosity,
with a purpose.

I connect data, intelligence, and people.

BSc (Hons) in Data Science & Analytics from The Hong Kong Polytechnic University. I build RAG agents, full-stack AI products, and data pipelines—from WYNI AI's conversational platform and LegCo Insight Bot to government statistical reporting and computer-vision deployments.

I work at the intersection of data engineering, applied AI, and full-stack delivery—grounding LLM features in reliable retrieval, validation, and observability.

More about me
02 / WHAT I DO

Ideas into
real things.

01

Intelligent systems

+

Context-aware agents and grounded conversations, built around real needs.

RAGAI agentsLLMsPython
02

Digital experiences

+

From the first interaction to the data behind it. Products that work together.

Next.jsReactTypeScriptSupabase
03

Data that makes sense

+

Reliable pipelines, clear insights, and automation for the details that matter.

SQLETLAnalyticsComputer vision
03 / ALONG THE WAY

Always
evolving.

Dec 2025 – Present

Statistical Assistant

Hong Kong Census and Statistics Department, HKSAR Government

Cross-country statistical data consolidation; BoP data preparation, calibration, and validation; Python automation for monthly IMF release-date PDF retrieval and archival; publication schedule verification.

Aug 2025 – Oct 2025

AI Developer (Full-time)

WYNI AI LIMITED

Core AI conversational platform with RAG multi-turn dialogues; RAG agent for HK Department of Health (Gemini/GPT, real-time sources); legacy ERP-to-WMS migration with GenAI-assisted spec coding and refactoring.

Apr 2025 – May 2025

STEM Engineer (Part-time)

Parami Company Limited

Developed and deployed a YOLO-based object detection system to improve precision and efficiency for robotics applications.

Aug 2024

Programmer Trainee (Part-time)

Smart Business Consultancy Limited

Built an HTML/JavaScript data input interface integrated with MySQL, improving data processing efficiency by 15%.

Jun 2024 – Aug 2024

STEM Intern — AI/ML (Computer Vision)

LifeSparrow Solution Limited

Raised drone imagery human-detection accuracy from 75% to 92% with Python and NVIDIA DeepStream; preprocessed and annotated 27,000+ images; deployed models on Azure.

04 / SELECTED WORK

Built with
intention.

All projects
01 / LLM Platform

Full-Stack Conversational AI Platform

Full-stack conversational AI (Aug 2025 – Oct 2025) using Next.js and Supabase to automate user interactions via third-party messaging APIs.

Next.jsSupabasePostgreSQLRAGOpenAI API
Inside the project

Built a Next.js + Supabase stack with a RAG conversational engine, real-time sync between PostgreSQL and external data sources, and an admin dashboard for monitoring, human-in-the-loop intervention, and knowledge-base management.

Delivered end-to-end automation for complex multi-turn dialogues with consistent data for reporting and continuous performance tuning.

01 / 03
05 / THE LITTLE UNIVERSE

Eight different
ways to be.

From a hand-drawn idea to a living companion.
Pick a personality. Watch it come alive.

06 / TOOLS OF THE TRADE

Press a key.
Find a signal.

My stack is a small instrument.
Use Q–B, the arrows, or click a key.

KEYBOARD MODE / ACTIVEQ W E R T   A S D F G   Z X C V B
ACTIVE SKILL / Q

PYTHON

LANGUAGE

The language I use to turn a messy idea into a dependable system.

← → move focus ENTER activate
07 / THE NEXT CONNECTION

Something in mind?
Let’s make it real.