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FinTech Payment Gateway Integration
A secure, PCI-compliant payment gateway wrapper aggregating multiple payment providers.
Node.jsTypeScriptPostgreSQLAWS KMS
Code is private/proprietary
Architecture Overview
A highly secure service with strict encryption boundaries. Uses AWS KMS for key management and PostgreSQL for transactional integrity.
Architecture Diagram PlaceholderImagine a beautiful systems architecture graph here.
The Problem
Integrating a new payment provider took weeks due to tight coupling in the legacy code.
The Solution
Abstracted payment processing behind a unified interface, allowing plug-and-play integration of new providers.
Lessons Learned
"Idempotency is critical for payment systems. A robust idempotency key mechanism prevented double-charging during network failures."
Key Features
- ✓Unified API for Stripe, PayPal, Braintree
- ✓Idempotent API design
- ✓PCI-DSS compliance architecture
Result Metrics
- IntegrationIntegration time reduced from weeks to days
- 0%0% transaction loss rate
- HandlesHandles 500+ TPS