Ray Wong
Transforming complex data into actionable insights and building intelligent solutions with 4+ years of experience across machine learning, analytics, and full-stack development.
About Me
Bridging Data Science
& Software Engineering
I am a Data Science and AI Developer passionate about turning complex data into clear, impactful solutions. My work spans machine learning, statistical modelling, natural language processing, and full-stack application development.
From building AI-powered report generation systems that cut turnaround time by 85%, to designing ETL pipelines processing 100K+ records, I thrive at the intersection of data engineering and intelligent automation. I bring a research-backed mindset to every project, grounded in my background at The Chinese University of Hong Kong.
Experience
Professional Journey
Software Developer / Data Analyst
Haidilao Hotpot
- Developed an internal HR management system supporting multiple stores with 300+ employees, enabling accurate tracking of working hours, shift records, and employee tip calculations.
- Analyzed operational and sales data to identify business trends, peak service hours, and customer preferences to support management decision-making.
Full Stack Associate ML Engineer
AutoInsight Limited
- Developed Generative AI solutions using LLMs with API integration for automated data processing and report generation.
- Collaborated with business stakeholders to translate technical data processes into actionable insights and documentation.
Research Assistant
The Chinese University of Hong Kong
- Analyzed social innovation projects to identify operational challenges and growth opportunities.
- Conducted network analysis to optimize entrepreneurial relationships and proposed data-driven connection strategies.
Financial Market Intern
Agricultural Bank of China
- Developed fixed-income purchase proposals through quantitative analysis of issuer metrics and financial statements.
- Engineered an AI-powered report generation workflow leveraging OpenAI, reducing turnaround time by 85% (from 2 weeks to 2 days).
Data Science Intern
ThinkCol Transform Limited
- Managed the data warehouse and maintained data quality of the AWS S3 system for seamless access.
- Developed and trained machine learning models via AWS SageMaker, improving efficiency by 50%; mentored 3 interns.
Machine Learning Intern
Jump Intelligence Group
- Collaborated on 3+ projects by managing data collection and overseeing prototype design for AI solutions.
- Led a team of 4 to carry out due diligence procedures; documented projects with actionable insights for management.
Machine Learning Intern
TickTack Technology Limited
- Spearheaded client communications, translating complex AI solutions into business value propositions.
- Created an automation script boosting image data processing efficiency by 50%; enhanced vehicle tracking accuracy to 98%.
Projects
Featured Work
HR Management System
A platform for employees to record working hours and for managers to calculate tips. Used across 3+ stores by 300+ employees.
Multi-role access (employees, managers, admins) with Row Level Security
Internationalization support with custom language context
Edge Functions for tip calculations, payment processing, and Feishu messaging
Real Estate Listing Platform
A platform for a real estate company that scrapes listing data from Proptx IDX. Visitors can browse properties and contact the realtor directly.
IDX data scraping with automated listing sync from Proptx
Rich text blog/CMS with Tiptap editor and image management
Server-side rendering with Supabase SSR integration
Skills
Technical Expertise
Programming Languages
Frameworks & Libraries
Cloud Services (AWS)
Databases
Tools & DevOps
AI / ML Technologies
Certifications
AWS Certified Machine Learning Engineer - Associate
AWS Certified AI Practitioner
AWS Certified Prompt Engineering
Education
Academic Background
The Chinese University of Hong Kong
Bachelor's Degree - Data Science and Policy Studies
Minor: Computer Science, Economics and Statistics
Second Class Honors Upper Division
Sep 2019 - Jul 2024
Key Courses
Professional Development
Data Analytics Specialization
DeepLearn.AI
MLOps, DevOps & DataOps
Duke University
Contact
Let's Connect
Prefer to reach out directly? Connect via email or find me on GitHub.
ywongyunsum@gmail.com
GitHub
github.com/yodaray