Build payment flows that remain reliable after the customer clicks “Pay” — including asynchronous confirmations, failures, retries and order-state changes.
A production payment flow has to handle redirect returns, webhooks, duplicated callbacks, delayed confirmations and payments that succeed after the customer closes the browser. Order status must reflect reality without creating duplicate orders or incorrect fulfillment.
We can integrate a provider directly, extend an existing gateway or add business rules that decide when a payment method should be available.
The exact scope depends on your current architecture and business process. These are the areas we most often cover.
Payment work is mostly state management: what WooCommerce knows, what the provider knows and what happens when those states disagree.
The browser returning to the shop is not proof of payment. Final status should come from a trusted provider event.
The same webhook may arrive more than once. Processing needs to be safe and repeatable.
Some methods confirm later. Orders need a lifecycle that does not cancel valid transactions too early.
Refund events, partial refunds and manual changes need clear ownership between WooCommerce and the provider.
We do not start with a technology choice. We start with the failure mode, the business rule and the evidence.
We compare browser redirects with server-side callbacks and payment gateway state.
We review idempotency, order locking and how retries are associated with an order.
We map the complete payment state machine instead of treating payment as one boolean flag.
A deployment is not “done” because the happy path worked once. We agree what must remain true in production.
We map provider statuses to WooCommerce order and payment states.
API requests, signatures, callbacks and webhook verification are handled according to the provider specification.
We simulate cancelled payments, duplicate callbacks and delayed confirmation.
The final flow is aligned with fulfillment, invoices and customer notifications.
The engagement should leave you with working software and a clearer technical situation than before.
Yes, if the provider exposes a suitable API and documentation.
Yes. Availability can depend on cart contents, shipping method, customer role, country or other business rules.
Yes. Authenticating asynchronous notifications is a core part of a reliable payment integration.
Yes. We can audit the current integration and either repair it or replace the risky parts.
Complex projects often combine more than one area. These services are commonly connected.
If you are not sure whether the right first step is an audit, integration or custom code, describe the symptom. The scope can follow the diagnosis.
Short technical brief →Send us a short description of the store, the current problem and the systems involved. We will tell you what we need to assess next.