Engineering service
Bespoke storefront, workflow, API, and Shopify Plus engineering for requirements that off-the-shelf themes and apps cannot handle cleanly.
What you get
We build the custom commerce logic behind serious Shopify stores: app integrations, automation, checkout extensions, storefront components, admin workflows, and performance-safe custom features.
Technical discovery and implementation plan
Custom storefront sections, app extensions, APIs, or admin workflows
Third-party app repair/replacement where needed
QA across themes, checkout, mobile, and operational edge cases
Documentation, training, and post-launch warranty window
Examples
These are service examples and implementation patterns. Client metrics are published only after approval.
B2B wholesale
Sales teams quote by email because Shopify cannot express MOQ, account pricing, and approval rules.
Build account-specific buying flows with quote capture, pricing rules, and sales-team handoff.
Operational automation
Staff manually reconcile stock, shipping exceptions, and app exports every week.
Connect Shopify events to a workflow that flags exceptions and routes them to the right owner.
Delivery process
Document the business rule, data sources, users, edge cases, and success metric.
Ship the smallest useful version behind clear QA and staging checkpoints.
Launch with rollback notes, owner training, logging, and a support window.
Compare by fit
A complete site should help buyers self-qualify. This comparison sets expectations before a sales call.
What you can build on Shopify
We work across the main surfaces Shopify documents for developers: apps, Functions, checkout and account extensions, themes, headless storefronts, integrations, B2B and agents.
Storefronts, data models and merchandising tools built to the store, not to a template.
Custom Shopify themes, Skeleton-style builds and Theme Store submissions
Headless storefronts with Hydrogen and the Storefront API
Metafield and metaobject data models for custom content
Bulk product, pricing and purchase-option tools
Subscriptions and selling plans
Markets setup: multi-currency, duties and localisation
Checkout Kit and Buy SDKs: native iOS and Android checkout and storefront browsing
Happify works across Shopify’s main extensibility surfaces: public and custom apps, Functions, checkout and account extensions, themes, headless storefronts, integrations, B2B, AI agents, store builds and migrations.
All Shopify servicesShare your store URL, platform, goal, budget range, and timeline. We will map the cleanest first move.
