★★★★★
“Absolutely blown away by the customization work! They took our basic Shopify theme and transformed it into a premium storefront.”
Checkout Extensibility · Shopify Functions · Automation
Shopify Plus Development & Checkout Customization
Our Shopify Plus development service covers Shopify checkout customization, Shopify Functions and automation for high-volume stores, from the team that built Checkout Engine on the same platform.
- Checkout UI extensions
- Payment, delivery and discount rules
- Upgrade-safe checkout code
Built on Shopify FunctionsCheckout Engine, our own checkout app
Stores we've built
TrezerKritilifeHeaven's ELIXInumaBalfeHouse of ZaviColor EyesRoyceluxeLoom & StoryBlackoste
Sound familiar?
The problems we fix most often
Each of these has a clear, practical fix.
“Our old checkout code needs replacing.”
We rebuild checkout.liquid and Shopify Scripts customizations with Checkout Extensibility and Shopify Functions, Shopify's upgrade-safe replacements.
“We need checkout rules Shopify doesn't offer.”
Hide, rename and reorder payment and delivery methods, and build custom discounts, with Shopify Functions.
“Manual work is slowing the team down.”
Shopify Flow workflows and custom apps for the repetitive tasks your team does every day.
What's included
What we build for Shopify Plus stores
Everything you'd expect from a Shopify Plus agency, from the developers behind Checkout Engine. Every project is scoped to your store.
Checkout customization
Checkout UI extensions for the information, shipping and payment steps.
- Custom fields and content blocks
- Upsell and trust blocks
- Checkout branding
Shopify Functions
Custom rules that run natively in Shopify's checkout.
- Payment and delivery rules
- Product, order and shipping discounts
- Cart and checkout validation
Legacy checkout rebuilds
checkout.liquid and Shopify Scripts customizations rebuilt on the upgrade-safe platform.
- Audit of what runs today
- Rebuilt with Functions and extensions
- Tested before the switch
Automation
Less manual work for your operations team.
- Shopify Flow workflows
- Order and customer tagging
- Alerts for your team
International selling
New markets set up with Shopify Markets.
- Currencies and languages
- Market-specific pricing
- Local domains or subfolders
Plus store builds & migrations
Custom themes and replatforming for high-volume stores.
- Online Store 2.0 theme builds
- Migrations from Magento and more
- Speed work for large catalogs
Case study
We built Checkout Engine on the same tools
Our own checkout app hides, renames and reorders payment and delivery methods, adds custom discounts and places upsells in checkout, all with Shopify Functions and Checkout UI Extensions.
“This Shopify app makes customizing payment/shipping methods and adding checkout upsells a breeze.”Read the case study
Armatura CO · Colombia · Checkout Engine review on the Shopify App Store
Process
How your Shopify Plus project runs
Four stages, each with a clear deliverable and your sign-off before we move on.
-
01
Discover
A free strategy call about your store, your checkout and your goals, then a clear scope and fixed quote.
-
02
Plan
We review your current checkout customizations, scripts and apps, and plan how each one moves to Checkout Extensibility and Shopify Functions.
-
03
Build
Checkout UI extensions, Functions and integrations built and tested on a development store.
-
04
Launch & grow
Released with checkout, emails and tracking tested, then ongoing support as Shopify adds new checkout features.
Checkout ExtensibilityCheckout UI extensionsShopify FunctionsShopify FlowShopify MarketsMetafields & metaobjectsGA4
5.0★ on the Shopify Partner Directory
What merchants say about working with us
Verified reviews left by stores we've built, migrated and supported.
★★★★★
“Their team delivered a clean, professional, and user-friendly website that perfectly matched our requirements. Communication was excellent, the project was completed on time.”
★★★★★
“The team was professional, responsive, and delivered exactly what we wanted. The site looks amazing and works flawlessly.”
★★★★★
“This company is very skilled and next time I need an expert I will use them.”
★★★★★
“We had about 10 additional ADA requirements when onboarding a wishlist app, and this company went above and beyond to meet them.”
★★★★★
“From the initial consultation to the final website launch, their team demonstrated professionalism, deep Shopify expertise, and a strong commitment to delivering a high-quality product.”
FAQ
Shopify Plus questions
Can't find your answer? Ask us on a free call.
Do I need Shopify Plus to customize checkout?
Not always. On any plan you can brand checkout in the checkout editor and use App Store apps built on Shopify Functions, such as Checkout Engine. Shopify Plus adds checkout UI extensions on the information, shipping and payment steps, and custom apps built with Shopify Functions.
Can you rebuild our checkout.liquid or Shopify Scripts customizations?
Yes. We audit what they do today, then rebuild them with checkout UI extensions and Shopify Functions, the same tools Checkout Engine is built on.
Do you only work with Shopify Plus stores?
No. We work with stores on every Shopify plan, and we can help you plan the move to Shopify Plus when you need it.
Can you move our store to Shopify Plus from another platform?
Yes. We handle migrations from Magento, WooCommerce, Wix and other platforms, including data and SEO redirects. See migrate to Shopify.
How long does a Shopify Plus project take?
It depends on scope. You get a timeline with your plan, before any work starts.
Tell us what you're building.
A 30-minute call with a Shopify developer, not a salesperson. You'll leave with a clear plan, whether or not you work with us.