About Hao Yu

I've spent 15 years in the trenches β€” building enterprise systems that don't fall over, mobile apps people actually use, and AI integrations that solve real problems. No team of account managers. No offshore handoffs. Just me, doing the work.

Tech Expertise

πŸ“±

Mobile

Flutter SwiftUI UIKit Kotlin
πŸ€–

AI & ML

OpenAI RAG LangChain Vector DBs
βš™οΈ

Backend

Java Node.js SQL Python C#
🌐

Frontend

TypeScript React Astro Vue
🏒

Enterprise

Archibus Oracle ESRI ServiceNow
☁️

Cloud & DevOps

AWS Docker CI/CD Azure

Certifications

πŸ… Oracle Database Expert
β˜• Oracle Java Professional
☁️ AWS Solutions Architect
πŸ—ΊοΈ ESRI Certified
🏒 Archibus SME

Who I Work With

Fortune 500 companies, government agencies, universities, scrappy startups. The common thread: they have hard problems and need someone who can actually ship.

What I'm Building Now

RAG systems that let employees search company knowledge in plain English. Teams chatbots that handle IT tickets. Mobile apps with AI that runs on-device. The fun stuff.

How I Work

I'll tell you if your idea won't work. I'll push back on bad requirements. I build things that last β€” not clever code that only I can maintain.

50+

Projects Completed

30+

Happy Clients

15+

Years Experience

100%

Client Satisfaction

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