About Kartio Developer
I'm an independent Shopify expert working with DTC brands, agencies and Shopify Plus merchants. My focus is simple: build stores that load fast, are easy for your team to run, and sell more than the version they replaced.
Most of my work is custom Liquid theme development, Online Store 2.0 sections, platform migrations, custom apps on the Admin and Storefront APIs, and headless Hydrogen builds. I care about the details shoppers feel: speed, clear product pages and a checkout that doesn't get in the way.
Experience
- 2024 — Present
Independent Shopify Expert
Partnering with DTC brands and agencies to build, migrate and optimise Shopify and Shopify Plus stores.
- 2022 — 2024
Senior Shopify Developer
Led custom theme builds and a headless Hydrogen storefront, lifting store conversion by 40% on average.
- 2020 — 2022
Ecommerce Developer
Delivered store launches, platform migrations and app integrations for retail and DTC merchants.
Services
Shopify Store Setup & Launch
A complete, launch-ready store — products, payments, shipping, taxes and a theme built around your brand.
Custom Theme Development
Bespoke Liquid themes and Online Store 2.0 sections your team can edit without touching code.
Conversion Rate Optimisation
Fix the leaks between product page and checkout — data first, opinions second.
Store Migrations
Move from WooCommerce, Magento, Wix or BigCommerce to Shopify without losing rankings or data.
Custom Apps & Integrations
Private Shopify apps and integrations that connect your store to the tools your business already runs on.
Speed & Shopify SEO
Faster stores rank better and sell more — technical SEO plus a measurable Core Web Vitals pass.
Headless Commerce (Hydrogen)
React-based Hydrogen storefronts on Oxygen when a standard theme can't deliver the experience you need.
Ongoing Shopify Support
A dedicated Shopify developer shipping fixes, features and CRO tests every single month.
Stack
Shopify Development
- Liquid & Online Store 2.0
- Custom sections & blocks
- Theme architecture
- Dawn & Horizon
- Metaobjects & metafields
- Checkout extensibility
Apps & Integrations
- Shopify Admin & Storefront API
- Custom & private apps
- Klaviyo & email flows
- Recharge subscriptions
- ERP / 3PL sync
- Payments & shipping setup
Growth & Performance
- CRO & A/B testing
- Shopify SEO
- Core Web Vitals
- GA4 & server-side tracking
- Shopify Markets
- Store migrations