I'm Kaung Htet Win —
most people call me Zhang.
A full-stack engineer who takes digital products from concept to deployment. 55+ clients and 80+ projects delivered across banking, e-commerce, and international brands — plus two SaaS products of my own, airesume.pro and Buy Buddy. I bring that same product thinking to every client build.
Zhang — Full-Stack Engineer & SaaS Founder
I'm a full-stack engineer with 6 years of experience building digital products that perform. From early-stage startups to established enterprises, I've helped 55+ clients across Myanmar, Thailand, Hong Kong, Australia, the USA, the UK, and beyond ship work that looks sharp and holds up in production.
My core stack is WordPress, ACF, PHP, and Shopify — but I also build full SaaS products with React, Node.js, and AI integrations. I own the whole pipeline: architecture, database design, APIs, frontend, deployment, and the maintenance that comes after launch. I hold a BSc in Computer Science from the University of Sheffield, and I've spent every year since putting that foundation to practical use.
Beyond client work, I've built and launched two SaaS products — airesume.pro (AI resume builder) and Buy Buddy (Shopify AI sales chatbot). Running my own products means I've had to care about conversion, uptime, and support load, not just clean code — and that perspective shapes how I build for clients.
My Core Specialties
Every project and product gets the full weight of my expertise — no half measures.
Full Stack Dev
End-to-end development from database architecture to pixel-perfect front-ends — including full SaaS products. I own the whole stack.
- PHP & MySQL
- JavaScript & REST APIs
- Bootstrap & Tailwind
- React & Node.js (SaaS)
WordPress & ACF
Custom themes, flexible content with ACF, performance-tuned setups — built the right way, not the quick way.
- Custom Theme Development
- ACF Pro & CPT
- WooCommerce
Shopify
Liquid-powered custom storefronts, theme customisation, and AI-powered app integrations — from launch to scale. I built Buy Buddy, a Shopify AI chatbot, on this stack.
- Custom Liquid Themes
- Shopify Plus
- App Integration
- AI Chatbot Integration
SEO & Speed
Technical SEO baked in from day one — Core Web Vitals, schema markup, and load-time optimisation that ranks.
- Core Web Vitals
- Schema Markup
- Performance Audits
Software & Systems
Custom web applications and internal business systems — configurators, dashboards, and the integrations that connect a company's tools together.
- Custom Web Apps
- API Integrations & Middleware
- Dashboards & Internal Tools
- Automation & Data Pipelines
Experience Timeline
Six years of building, learning, and shipping — for clients and my own products.
Website Project Holder & WordPress Developer
Began delivering real client projects — custom WordPress builds, business websites, and tailored web solutions. Every project sharpened the fundamentals: clean structure, fast delivery, and results that clients could see immediately.
Customized WordPress Developer & Shopify E-Commerce
Levelled up into advanced WordPress customisation with ACF Pro and custom post types — alongside Shopify store builds for e-commerce brands. Delivered high-performance sites for clients across multiple industries who needed more than off-the-shelf solutions.
Senior WordPress Developer & Shopify E-Commerce Specialist
Took on larger, more complex projects — enterprise WordPress platforms, multi-functional Shopify stores, and international client work. Built scalable architectures that give content teams full control while keeping the codebase clean and maintainable.
Full-Stack Developer & Head of E-Commerce — Nutrition Trading Hong Kong
Leading e-commerce strategy and full stack development at Nutrition Trading Hong Kong while building and launching my own SaaS products — airesume.pro (AI resume builder) and Buy Buddy (Shopify AI sales chatbot). Combining client delivery with product thinking to drive real business growth through the web.
SaaS Founder — airesume.pro & Buy Buddy
Designed, built, and launched two independent SaaS products from scratch. airesume.pro helps job seekers create AI-generated resumes. Buy Buddy is a Shopify AI chatbot that converts store visitors into buyers.
Technical Expertise
Built through years of client work and shipping real SaaS products — not just tutorials. Every percentage reflects actual delivery, not classroom practice.
Ready to build something great together?
Whether you have a full brief or just an idea — let's talk. I'm open to new projects, collaborations, and consultations.