Writer
Commerce Engineer & App Developer

Customers in several Asian markets were unable to complete purchases on a multi-currency Shopify store because transactions were frequently declined by issuing banks. Cross-border payment processing, regional card authorization rules, and missing local acquiring capabilities led to a high payment failure rate, preventing legitimate customers from completing checkout and reducing overall conversion rates.
Analyzed failed payment attempts, reviewed bank decline patterns, and identified cross-border authorization issues affecting customers in key Asian markets. Integrated a local payment gateway with regional acquiring support, optimized payment routing, enabled 3D Secure authentication where required, and implemented smart retry logic for soft declines. These improvements significantly increased payment authorization rates and reduced failed transactions across international markets.

This case study is part of our Backend Engineering & API Integration service offering.
Extend Shopify's backend capabilities with custom engineering, API integrations, and business logic development. We build reliable backend solutions, resolve complex technical issues, and connect Shopify with external systems to support seamless commerce operations.
Store faced Shopify payment gateway API and webhook issues, restored reliable checkout and payment processing.
Debugged the payment gateway integration, resolved API and webhook issues, optimized payment processing, and restored reliable checkout functionality.
Client
Hassy foods shop