I started building on Shopify back before Online Store 2.0 existed. Since then I've shipped custom themes for fast-growing DTC brands, built public and private apps used by merchants in dozens of countries, and spent more late nights than I'd like to admit figuring out why a single Liquid loop was tanking time-to-first-byte.
Today I work independently across four areas: theme development, app development, technical SEO, and Core Web Vitals. They overlap more than people think. A slow theme tanks SEO. Bad app architecture creates layout shift. The merchant pays for all of it.
I'm based in Hong Kong and operate through Ksun Trading Technology Limited. I work with merchants across Asia-Pacific, Europe, and North America — async-first, with overlap windows scheduled in advance.
Why work with me
Most Shopify work is sold by agencies and delivered by whoever's cheapest that quarter. That's fine for some projects. It's a disaster for anything that needs real platform knowledge — Shopify Functions, custom apps, theme architecture for international stores, anything that touches checkout or admin extensions.
I'm one engineer. I'll tell you up front what I can do well, what I'd punt to a specialist, and what doesn't need doing at all. There's no junior dev between you and the code. If I take on a project, I'm the one writing it.
My approach
- Measure before optimizing. Lighthouse, real-user monitoring, Search Console, and Shopify analytics. Opinions are cheap; numbers aren't.
- Keep the stack boring. Liquid where Liquid works. Apps where apps make sense. No "let's rewrite this in React" unless the merchant gets something concrete in return.
- Ship in small steps. Weekly demo, weekly merge. You always know where things stand.
- Document for the next person. Every theme I touch, I leave better-commented than I found it. Every app I write has a README a junior dev can pick up.