Shopify & Shopify Plus development
I build Shopify stores that look sharp and sell.
Custom themes, headless storefronts, and app integrations for ecommerce brands. Seven years of shipping production Shopify work, from DTC startups to Plus merchants.
Services
Custom theme development
Fast, accessible Liquid themes built around your brand, with sections and metaobjects your team can manage without a developer.
Headless storefronts
Next.js and Hydrogen-style builds on the Storefront API with Sanity for content, for brands that have outgrown a theme.
Shopify Plus customization
Checkout customizations, scripts and functions, and custom logic for subscriptions, bundles and complex merchandising.
App & platform integrations
Search, reviews, loyalty, email and support tools wired in properly: Searchspring, Algolia, Klaviyo, Okendo, Yotpo, Gorgias, LoyaltyLion.
Performance & UX improvements
Audits and fixes for slow pages, clunky product pages and leaky checkout flows, so the store converts more of the traffic you already pay for.
Ongoing support
A developer on call for launches, sale periods and the steady stream of small changes a growing store needs.
Selected Work
Stores for brands across fashion, beauty, food and wellness.
Want a store like these? Let's talk about yours.
Start a projectCase studies
Headless subscription storefront
Sitka Salmon
- —Headless Next.js storefront on Shopify Plus, deployed on Vercel
- —Sanity as the content layer so marketing can ship pages independently
- —Subscription-first shopping experience
Custom theme & checkout logic
Revelry
- —Custom Shopify theme built for bridesmaid dress shopping
- —Checkout scripts for Shopify Plus
- —Metaobject-driven color swatches the team can manage themselves
Plus storefront & integrations
Andie Swim
- —Shopify Plus storefront with React, Tailwind and Liquid
- —SearchSpring integrated for product search and discovery
- —LoyaltyLion integrated for rewards and retention
How we work together
Discover
We talk through your goals, your store, and what's holding it back. You get a clear scope and estimate.
Design & plan
We agree on the approach, the integrations and the milestones before any code ships.
Build
Regular check-ins with a working preview, so there are no surprises at the end.
Launch & support
Careful QA, a smooth launch, and help afterwards when you need it.
About
A senior Shopify developer you work with directly.
I'm Sung Kyu, a New York–based developer with seven years of experience building ecommerce experiences. I've shipped Shopify Plus stores across fashion, beauty, food and wellness, from theme builds to fully headless storefronts.
No account managers and no hand-offs: you talk to the person writing the code. I care about the business result, so I'll tell you when a simpler solution will do the job.
By day I'm an implementation engineer at Recharge, the subscription platform for Shopify merchants, which keeps me close to how subscription commerce works on Shopify.
Tools I work with
- Shopify Plus
- Liquid
- Storefront API
- Next.js
- React
- Vue
- TypeScript
- Tailwind CSS
- Sanity
- Node.js
- GraphQL
- Vercel