A checkout that gives each order a clear payment state, even when something goes wrong.
Discuss a project
A payment button is the easy part. The difficult part is keeping an order, a provider response and a customer's next step consistent when payment is delayed, declined or repeated. I work on that boundary: gateway setup or custom plugin development, callback handling, testing and a practical handover. The portfolio includes WooCommerce gateways and payment connections to existing stores; it does not claim ownership of the payment providers themselves.
A gateway that brings a payment-by-instalments service into the shop’s order workflow.
An instalment-payment method with order-level payment information, refunds and testing support.
A payment gateway connecting customer checkout, seller accounts and platform commissions inside WooCommerce.
Seller payments and the platform commission follow the configured marketplace rules.
A payment gateway connecting a WooCommerce checkout with the bank’s payment flow.
A WooCommerce gateway with bank-generated payment links, saved-card controls and a test mode.
A payment integration developed from scratch for Ziina’s WooCommerce merchants in the United Arab Emirates.
A dedicated WooCommerce payment gateway for Ziina.
Order creation, hosted payment and refunds connected through a configurable checkout integration.
WooCommerce orders initiate a payment with the provider and redirect the buyer to complete it.
Connecting a payment system to the Fliben ventilation-equipment store, built with Next.js, React and Strapi.
Payment-system connection
A provider and checkout flow mapped against the existing store or application
Gateway configuration or a scoped custom integration, including callbacks and order states
Tests for successful, failed, cancelled and repeated payment attempts
Operational notes for refunds, support and provider-side troubleshooting
I review the checkout, provider API, order model and who handles refunds and disputes.
I agree the states, callbacks, credentials and failure behaviour before changing production checkout.
I build or configure the connection and test it in the provider's available sandbox and the store's staging environment.
I coordinate the switch to live credentials and document the signals that show whether payments and orders remain in sync.
One payment-provider connection in an existing checkout
This price covers the starting scope described above. I confirm a quote after reviewing your brief and existing systems. Third-party fees are separate.
Send a brief on WhatsAppFor development work I deliver, I correct defects in the agreed scope reported within 90 days of launch. New features, changes by others and third-party outages are separate work.
This service connects an existing payment provider to a store or product. Building a regulated payment institution is a different undertaking.
Yes, provided the provider has a usable API or plugin interface. The public cases include several regional gateways, so I assess the provider documentation and settlement flow before estimating.
That mismatch is one of the main cases to design for. I test callbacks, idempotency and recovery paths within the provider's available interface, then document what staff should check.
Tell me where your product stands. I'll give you a direct view of the options and what I can take on.