Shopify Checkout Specialists
Checkout logic that actually works.
We build advanced Shopify checkout systems — custom Functions, discount orchestration, payment and delivery rules, Scripts migration — for merchants who've outgrown what native tools can do.
Shopify Scripts are already locked. Your existing logic runs until June 30 — then it goes dark.
What we do
Checkout is where money moves.
We make sure the logic holds.
Most Shopify developers handle themes and app installs. We specialize in the harder layer — the Functions, rules, and orchestration that make checkout behave exactly the way your business requires.
01
Scripts → Functions Migration
Shopify Scripts are locked. If your store runs custom discount, shipping, or payment logic through the Script Editor, that logic goes dark June 30, 2026. We audit, rebuild, and verify in production.
See migration services →02
Custom Checkout Functions
Discount logic, payment method rules, delivery filtering, cart validation, and checkout blocking rules — built as proper Shopify Functions in Rust/WebAssembly. No hacks, no fragile workarounds.
See Functions work →03
Velvet Checkout App
Our own app for merchants who need a governed control plane for checkout rules — create, preview, publish, and manage discount, payment, delivery, and validation logic in one place.
View the app →Vertical expertise
We specialize in verticals, not everything.
Generic Shopify developers compete on price. We compete on depth. We know the compliance requirements, the right app stacks, and the checkout patterns that convert for specific industries — and we use that knowledge from day one of every project.
Health & Wellness
Compliance, subscriptions, high LTV.
FDA-adjacent claim restrictions, age verification, subscription billing rules, conditional payment methods by product category. The compliance layer is where generic developers stop — and where we start.
Food & Beverage
Compliance, subscriptions, CPG.
Age-gating at checkout, subscription fulfillment rules, DTC shipping restrictions, wholesale vs. retail pricing logic. Compliance-heavy verticals need checkout logic they can trust.
B2B / Wholesale
Customer-specific pricing and terms.
Net payment terms, account-based pricing tiers, minimum order quantities, catalog access rules. B2B checkout logic is a different problem entirely — one we're built for.
Not in one of these verticals? We still work on clearly-scoped checkout problems in other industries. Tell us what you're dealing with →
Why it matters
Generic developers touch the checkout and hope for the best.
Checkout is Shopify's most protected surface. A broken discount rule or a payment method that appears for the wrong customer doesn't just annoy — it costs conversions in real time, often invisibly. We work exclusively in this layer. We've shipped working Shopify Functions in production. That depth is what you're paying for.
Work with us
Have a checkout problem worth solving?
Tell us what you're dealing with — Scripts migration, complex discount logic, payment customization, or something that doesn't fit neatly into native settings. We'll tell you honestly whether we can help and what it would take. The initial conversation is free.
Request a Quote →