Twispay: secure online payments, integrated seamlessly

project info

LOCATION: Romania

INDUSTRY: Fintech / Ecommerce

DOMAIN: Payment Gateway Integrations

Twispay is a European payment processor offering secure online transactions, recurring billing, and fraud prevention for merchants in diverse industries. To expand its adoption across the e-commerce ecosystem, Twispay needed fully compliant, robust, and up-to-date payment modules on all major platforms.
Genuineq built and modernized Twispay’s payment modules across major e-commerce platforms, ensuring merchants across Europe can accept payments reliably, securely, and at scale.

the challenge

To compete in the European payments market, a payment provider must offer flawless checkout experiences and stable and secure payment flows. Twispay’s existing modules required modernization, feature expansion, bug resolution, and alignment with the latest versions of WooCommerce, Magento, PrestaShop, OpenCart, osCommerce, and WHMCS.

the solution

Genuineq rebuilt Twispay’s payment modules to ensure secure integrations:

Partial and full refund logic, with correct order status handling
Recurring payments, including subscription cancellation flows.
Checksum logic rewritten across all modules, fixing major inconsistencies.
Saved card payments, enabling frictionless repeat purchases.
Improved IPN + backUrl logic.
Guest checkout, with unique identifiers to prevent fraud.
Module version tracking, merchant notifications.

our contribution

SERVICES: • Payment integration development • Module modernization • Feature extension • QA & compatibility testing

FEATURES: • Recurring payments • Saved cards • Refund flows • Order state sync • Guest checkout identity logic • Theme-compatible checkout UI

TECH STACK: • PHP • REST APIs • WooCommerce/Magento/OpenCart/PrestaShop/WHMCS plugin systems • Twispay API

Payment integrations are unforgiving - every edge case matters. Supporting payments at scale means designing for failures, retries, and inconsistencies that appear only in real merchant environments. With Twispay, we focused on making their modules fault-tolerant, secure, and fully aligned with platform best practices across WooCommerce, Magento, PrestaShop and more. From correcting transaction flows to enabling saved cards and recurring payments, we engineered each module to behave predictably under real-world merchant conditions. Reliability is the real product in fintech, and that’s exactly what we delivered.

Cosmin Bosutar, CTO Genuineq

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