Hire Payment Gateways Developers

Payment gateway integration connects a WordPress or WooCommerce site to a payment processor — Stripe, PayPal, Authorize.net, Square, or others — so customers can pay for products, services, or subscriptions online. Most WooCommerce payment integrations use an existing gateway plugin (Stripe for WooCommerce, PayPal Payments), but configuring these correctly for a specific business model, compliance requirements, and user experience requires specific knowledge.

A payment gateway developer goes beyond installing a plugin. They configure the gateway for the specific use case (one-time payments, subscriptions, deposits, pre-authorizations), set up webhook endpoints that keep WooCommerce informed of payment status changes, test the complete payment flow end-to-end in test mode before going live, and handle the edge cases — declined cards, network errors, refunds, and disputes — that a payment integration needs to handle gracefully.

Custom payment gateway development — building a WooCommerce gateway plugin for a processor that does not have an existing WooCommerce plugin — is a distinct technical project that requires implementing the WooCommerce Payment Gateway API in PHP and integrating with the processor’s API. This is less common than configuring existing gateways but is needed for regional processors, proprietary payment systems, or highly customized payment flows.

Payment gateway work on Codeable covers:

Initial gateway setup for a new WooCommerce store. Choosing the right gateway for the business (based on fee structure, supported currencies, subscription support, and geographic availability), installing and configuring the gateway plugin, setting up webhooks, and testing the full checkout flow before launch.

Subscription and recurring payment gateway configuration. Not all gateways support automatic subscription renewals. Setting up a gateway with WooCommerce Subscriptions requires specific configuration — Stripe’s Payment Element, PayPal Reference Transactions — and testing the renewal flow specifically, not just the initial checkout.

Multi-currency and multi-region payment setup. Stores selling internationally may need multiple gateways for different regions, or a single gateway configured for multi-currency display and processing. A developer configures the currency presentation and routing logic correctly.

Custom payment gateway development. Building a WooCommerce gateway plugin for a local or proprietary payment processor requires implementing the WooCommerce Payment Gateway class and integrating with the processor’s API for charge creation, refunds, webhooks, and error handling.

Payment gateway expertise requires both technical knowledge of the WooCommerce payment API and practical knowledge of specific payment processor APIs and requirements. Key things to assess:

Ask which gateway they are most experienced with. Stripe, PayPal, and Authorize.net have different APIs, different webhook systems, and different testing environments. A developer who has configured Stripe specifically knows the Payment Element setup, Stripe CLI for local webhook testing, and Stripe’s idempotency requirements. This is different knowledge from PayPal or Authorize.net experience.

Ask about their approach to testing. Payment integrations must be tested end-to-end in test mode — including declined card scenarios, webhook delivery, and refund flows — before going live. A developer who describes a systematic test checklist has done payment integrations professionally. One who tests only the happy path (successful payment) has not done enough payment work to catch the edge cases that cause real problems in production.

Common payment gateway problems:

Payments appearing as pending in WooCommerce after successful charge — the webhook from the payment processor is not reaching WordPress, so WooCommerce does not know the payment was confirmed. Check the webhook endpoint URL registered in the payment processor dashboard, verify the WordPress server can receive webhook POST requests from the processor’s IP ranges, and check WooCommerce logs for webhook delivery errors.

Orders not completing after payment — a hook conflicting with WooCommerce’s order completion flow, or a custom plugin interfering with the payment confirmation handling. Debug by temporarily deactivating other plugins and testing the payment flow to identify the conflicting plugin.

Subscription renewal payments failing after working previously — the payment token stored for the subscription is no longer valid (card expired, account closed), or the gateway’s API changed and the renewal request is malformed. Check the Stripe Dashboard or gateway logs for the specific error code on the failed renewal charge.

SSL errors during checkout — the site is not serving checkout over HTTPS, or the SSL certificate has expired. All payment gateways require HTTPS for checkout. Fix the SSL configuration before investigating payment issues — most gateways will not process payments on non-HTTPS pages.

Payment gateway maintenance covers keeping gateway plugins updated and monitoring transaction success rates. Payment processor API versions are deprecated on a schedule — failing to update before a deprecated API version is shut down can suddenly break payment processing. Subscribe to your payment processor’s developer changelog and update accordingly.

Monitor refund and dispute rates in the payment processor dashboard. An increase in disputes may indicate fraud, a confusing billing descriptor, or fulfilment problems. An increase in failed payments may indicate a gateway configuration issue or a change in the processor’s fraud detection rules that is blocking legitimate transactions.

PCI DSS compliance is an ongoing requirement for any site handling payment data. Using gateway-hosted payment forms (Stripe Elements, PayPal hosted buttons) significantly reduces PCI scope compared to custom card form implementations. Verify that the implementation continues to use gateway-hosted forms and does not accidentally handle raw card data through any code path.

When posting a payment gateway project on Codeable, specify the payment processor (Stripe, PayPal, Authorize.net, or another), the WooCommerce version, whether subscriptions or recurring payments are involved, the currencies and countries the store serves, and whether you need an existing gateway plugin configured or a custom gateway plugin built.

For custom gateway development, provide the payment processor’s API documentation or developer portal access. A custom gateway project requires the developer to work from the processor’s API specification — having this available before the project starts avoids delays.