Open to AI Engineer opportunities in Canada and the US

AI engineer shipping production LLM and voice systems

I build domain-grounded AI assistants that improve response quality, reduce operational load, and survive real-world production traffic.

Technical founder and AI engineer with hands-on delivery across GPT-powered assistants, RAG systems, and real-time voice AI, including production deployments for a Fortune 500 elevator enterprise.

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Fortune 500 Production Deployment LLM Applications RAG + Retrieval Systems Real-time Voice AI AWS + Azure Co-Founder @ We Link Technology

AI Focus

Where I create the most technical and business value

LLM + RAG Production

JuTong Enterprise Assistant

Designed and deployed a GPT-4o assistant with RAG on 1Gb internal documentation for grounded recommendations, diagnostics, and service workflows.

Improved sales/service efficiency by about 30%
Contributed to $1M cost savings

Real-Time Voice AI

AI Elevator Emergency Call Center Platform

Built Twilio + STT/TTS voice flows with Azure AI and GPT-4o fallback for low-latency emergency interactions and resilient operations.

30% faster intervention time
Escalations reduced by 50%

Founder-Level Ownership

From architecture to production outcomes

As co-founder of We Link Technology, I owned solution design, technical execution, enterprise delivery, and production iteration with user feedback loops.

End-to-end AI product responsibility
Strong alignment between model quality and business goals

About

AI engineer and technical founder focused on production reliability

What I build

Production LLM assistants grounded by enterprise knowledge and feedback loops
Real-time voice AI systems for high-stakes support and emergency workflows
Cloud-native stacks on AWS and Azure with measurable reliability targets

How I work

Start from business constraints, then design model + system boundaries
Use RAG, prompt iteration, and SOP grounding to improve response quality
Ship maintainable software: testability, observability, and rollback safety

Experience

AI Experience & Engineering Timeline

Co-Founder | AI Engineer

We Link Technology LLC | San Jose, CA, USA

Sep 2023 - Jan 2025

Co-founded We Link Technology LLC and led AI product direction, architecture, and enterprise delivery execution.
Built and deployed production-grade generative AI systems for a Fortune 500 elevator company, spanning LLM assistants, real-time voice AI, and grounded enterprise workflows.
Architected JuTong, a GPT-4o-powered sales and service assistant with Python/Flask, Docker, and AWS EC2, contributing to about 30% efficiency lift and $1M cost savings.
Designed and implemented a RAG pipeline over 1Gb of internal sales documentation, increasing response grounding and reducing hallucinations in enterprise use cases.
Built a Twilio-based emergency voice platform with Azure AI services and GPT-4o fallback, reducing intervention time by 30%, improving grounded accuracy from 80% to 90%, and reducing escalations by 50%.

ERP System Software Engineer & Functional Consultant

JTANG Consulting Inc | Vancouver, BC, Canada

Jan 2025 - Present

Customized Microsoft Dynamics 365 Business Central for 10+ suppliers, improving operational efficiency by 30% and reducing inventory errors by 50%.
Delivered end-to-end migration from legacy ERP to Azure-based Business Central, including full MySQL migration and production cutover.

Research Assistant

UC San Diego SOC Lab | San Diego, CA, USA

Jun 2022 - Sep 2022

Developed an AI-based traffic control simulator in Python with 20% simulation efficiency gains.
Built real-time simulation visualization and validated 15% faster traffic flow stabilization.
Delivered a Flask demo app for research communication and result presentation.

Projects

Flagship AI systems

Enterprise LLM Assistant

JuTong AI Sales & Service Assistant

Production assistant for elevator sales and service workflows, delivering contextual recommendations, automated diagnostics, and support operations with measurable impact.

$1M savings | 30% efficiency lift

GPT-4oRAG1Gb DocsPython/FlaskAWS EC2

Real-time Voice AI

AI Elevator Emergency Call Center

End-to-end voice assistant for emergency response with continuous passenger interaction, engineer relay, STT/TTS pipeline, and fallback resilience.

30% faster intervention | 50% fewer escalations

TwilioAzure AISTT/TTSGPT-4o Fallback

Applied Research

Autonomous Traffic Control Simulator

AI traffic strategy prototype with live simulation and web visualization for mixed highway traffic behavior analysis.

20% simulation gain | 15% stabilization gain

PythonFlaskSimulationVisualization

Skills

Technical stack

AI / ML

LLM ApplicationsRAGFine-tuning Prompt EngineeringSTT/TTSReal-Time Voice AI

Languages

PythonJavaC++JavaScript SQLHTMLCSSMATLABAL

Frameworks & Platforms

FlaskDjangoReactAWS AzureDockerMySQLMongoDB RedisSparkREST APIsPostmanJMeter

Enterprise Delivery

Dynamics 365 Business CentralERP Migration Azure Cloud ModernizationRequirements Analysis

Education

Academic background

Simon Fraser University M.Sc. in Computer Science | GPA 3.7 / 4.0 Sep 2023 - Dec 2024
University of California, San Diego M.S. in Machine Learning & Data Science | GPA 3.6 / 4.0 Sep 2021 - Mar 2023
Cardiff University B.S. in Computer Science (First Class Honors) | GPA 4.0 / 4.0 Sep 2019 - Jun 2021

Awards

Awards & Honors

Silver Award 6th China College Students Internet Plus Innovation and Entrepreneurship Competition (Guangdong Province Division) 2020
Second Prize (Entrepreneur Group) Youth Entrepreneurship Cup - 7th Guangzhou Youth Innovation and Entrepreneurship Competition (Huangpu Division) 2020
Silver Award 12th Challenge Cup College Students Innovation and Entrepreneurship Competition (Guangdong Province) 2020
Winning Prize (Creative Group) 5th China College Students Internet Plus Innovation and Entrepreneurship Competition (Guangdong Province Division) 2019
Gold Prize 2019 Entrepreneurship Cup College Students Innovation and Entrepreneurship Competition 2019
Top 10 in Guangdong + Most Popular Award 2019 Microsoft Imagine Cup Global Students Science and Technology Competition 2019

Contact

Looking for an AI engineer with end-to-end delivery ownership?

I am available for roles focused on applied AI, LLM platforms, and production software engineering across Canada and the US.

Renoyao9@gmail.com LinkedIn Website Startup Website

Based in Burnaby, BC, Canada