Shopify Plus development for stores where a broken feature costs real money.
I build and maintain custom Shopify Plus features: checkout extensions, Shopify Functions, custom apps and integrations like Klaviyo. The focus is on what matters most on a high-volume store: it has to work on launch day, and it has to keep working every month after.
- Shopify Select Partner
- Building on Shopify since 2018
- Maintaining a seven-figure Plus store
Custom work that uses what Plus makes possible.
Checkout extensibility
Custom checkout UI, upsells, trust content and fields built with checkout UI extensions, including upgrades for stores still relying on the deprecated checkout.liquid.
Shopify Functions
Custom discount, shipping and payment logic that runs inside Shopify's checkout, for rules that apps and settings can't express.
Custom apps and integrations
Private apps and API integrations with ERP, warehouse, CRM and marketing tools, so data moves between systems without manual work.
Klaviyo and lifecycle automation
Custom Klaviyo integrations that send the right events and data from Shopify, so campaigns and flows trigger accurately and stay accurate after changes.
High-traffic launches and drops
Sales, drops and campaign launches planned and tested in advance, so custom features keep working when traffic and orders spike.
B2B, wholesale and expansion
Wholesale pricing, company accounts and expansion stores or markets set up so they stay consistent with your main store.
Music On PR: a custom raffle system on Shopify Plus.
- Shopify Plus
- Digital products
- Custom raffle system
- Klaviyo
The store
A seven-figure Shopify store for a Puerto Rico brand running public prize raffles for vehicles, homes and cash. Buying a digital product enters the customer into the raffle, so the product, the entry and the customer's emails all have to line up perfectly.
What we built
A custom Shopify Plus system: the digital product experience, custom raffle functionality, and a Klaviyo integration for automated customer communication.
The hard part
Making sure the raffle system doesn't break the moment the client switches a raffle on. That's when attention, traffic and orders arrive all at once, and it's the worst possible time for a custom feature to fail. Just as important was making sure the Klaviyo campaigns ran accurately after launch, so every customer got the right message about their entry. Getting there took careful process and a lot of testing before anything went live.
What happens every month
My team still maintains the store. Every month we make sure the raffle system and the Klaviyo integration keep working as the store changes, test before launches, and ship ongoing development. The same discipline that got the system live keeps it from breaking.
Custom features need someone keeping them working.
On a Plus store, most problems don't come from the first build. They come later, when an app updates, a theme changes or a big campaign goes live. A monthly partnership means someone who already knows your store is checking before that happens:
- —Custom features checked so they keep working after theme, app and Shopify updates
- —Testing before every launch, campaign or switch-on, not after something breaks
- —Klaviyo events, flows and campaigns monitored so they keep firing accurately
- —Apps, integrations and checkout extensions kept healthy and up to date
- —Improvements shipped every month instead of piling up
You work directly with me: I lead every project and review every change, and my team handles the build. See how I run projects.
Shopify Plus development questions.
What is the difference between a Shopify developer and a Shopify Plus developer?
Shopify Plus unlocks features standard plans don't have, like checkout customization with checkout UI extensions, custom apps running Shopify Functions, B2B, Launchpad and expansion stores. A Shopify Plus developer knows how to build with those features and how to keep a high-volume store stable while doing it.
Do I need Shopify Plus?
Not always. Plus makes sense when you need checkout customization, B2B, multiple stores, or custom logic at checkout, or when your volume makes Plus pricing worthwhile. If you're unsure, I'll review your store and tell you honestly whether Plus solves your problem or whether a standard plan is enough.
Can you upgrade our checkout from checkout.liquid?
Yes. Shopify has deprecated checkout.liquid, so customizations built on it need to be rebuilt with checkout UI extensions, Shopify Functions and pixels. I audit what your current checkout does, then rebuild each customization the supported way and test it with real orders.
Can you work on an existing Shopify Plus store someone else built?
Yes. Most Plus work starts with a store that already exists. I review the theme, apps and custom code first, so changes fit what's already there instead of breaking it.
How do you make sure a launch or campaign doesn't break the store?
Every change is built on a separate theme or app version, tested with real test orders and checked against the integrations it touches, including email marketing like Klaviyo, before it goes live. For big launches we plan the switch-on together and watch orders, checkout and campaigns closely afterwards.
Do you offer ongoing Shopify Plus support?
Yes. My team maintains Shopify Plus stores on a monthly basis: checking custom features keep working, testing before launches, keeping apps and integrations healthy and shipping improvements. You keep one accountable partner who already knows your store.
Need a Shopify Plus partner who keeps things working?
Tell me about your store and what you need built or kept stable. I'll tell you how I'd approach it.