Storefront
Theme, Hydrogen or headless, performance, content, search and merchandising.
Shopify Plus development agency Plus · Apps · Integrations
Shopify is rarely
just a store.
Sequator builds Shopify systems where storefront, checkout, apps, APIs and operations have to work as one commerce stack.
System map
A good Shopify agency does not build around Shopify.
The difference is architecture: what stays in the theme, what becomes an app, what belongs in external systems and which logic should never be improvised in checkout.
The commerce operating system.
Checkout
Checkout Extensibility, Shopify Functions, Plus workflows, payments and compliance.
Apps
Custom apps, admin workflows, Polaris UI, permissions and App Bridge.
APIs
Admin API, Storefront API, webhooks, retry logic, sync and observability.
Operations
ERP, PIM, CRM, warehouse, support, reporting and internal tools.
Where Shopify Plus engineering pays off.
B2B and wholesale
Customer-specific pricing, approvals, roles, order lists and ERP integration.
International commerce
Markets, taxes, currencies, catalog logic and regional checkout rules.
Custom operations
Workflows that a standard app stack cannot represent reliably.
Performance and migration
Storefronts and data moves that cannot put revenue or operations at risk.
App, theme or integration?
Custom app
When a recurring business rule needs UI, permissions and data.
Not for logic that is only presentation.
Not when an external system remains the source of truth.
Theme
Not for durable operations logic.
When the work is presentation, content, templates or storefront behavior.
Only when data does not need cross-system sync.
Integration
Not when Shopify should be the only work surface.
Not when no storefront change is needed.
When ERP, PIM, CRM or warehouse carry the real business logic.
FAQ
Shopify questions.
- Are you a Shopify Plus agency?
- We build Shopify Plus engineering: Checkout Extensibility, Functions, custom apps, integrations and operational systems around Shopify.
- Can you replace an existing Shopify app stack?
- Yes, when a custom app reduces operating cost or risk. We do not replace every app by reflex.
- Can you integrate ERP, PIM or CRM?
- Yes. Integrations are often the reason Shopify engineering has to become senior work.
Start
Shopify should run with less improvisation?
Send the store, app list and integrations. We will tell you where the system breaks.