Fintech Payment Gateway UI

Designed and developed a comprehensive payment gateway UI system with PCI-DSS compliance at its core. Built using React and Tailwind CSS, the component library provides a seamless, accessible payment experience across web and mobile platforms. The system includes secure card input components with real-time validation, multi-step payment flows, and comprehensive error handling. Implemented accessibility features following WCAG 2.1 AA standards, ensuring keyboard navigation, screen reader support, and proper ARIA labels. The UI integrates with multiple payment processors through a unified API layer, supporting various payment methods including credit cards, digital wallets, and bank transfers. Features include tokenization for secure card storage, 3D Secure authentication flows, and comprehensive transaction status tracking.

Tech Used

ReactTailwind CSSTypeScriptNext.jsStripePCI-DSSAccessibilityWCAG 2.1JestCypress

Process Followed

Initiated with PCI-DSS compliance requirements analysis and security audit. Designed component architecture with separation of concerns for payment processing and UI layers. Built React components with TypeScript for type safety and better developer experience. Implemented Tailwind CSS for consistent, responsive design system. Created secure card input components with real-time validation and masking. Developed multi-step payment flows with state management and error recovery. Integrated Stripe and other payment processors through unified API abstraction. Implemented accessibility features including keyboard navigation, ARIA labels, and screen reader support. Built comprehensive test suite with Jest for unit tests and Cypress for E2E testing. Conducted security audits and penetration testing for PCI compliance. Performed accessibility audits and WCAG 2.1 AA compliance verification. Deployed with CI/CD pipeline ensuring secure handling of sensitive payment data.