Payment & Transaction Systems
Secure, High-Performance Financial Systems
Architecting PCI-DSS compliant payment systems handling millions of transactions with 99.9% uptime.
Overview
Architected and built enterprise payment orchestration systems that handle real-time authorization, capture, and refund workflows at scale while maintaining strict security compliance.
The Challenge
Payment systems must be highly available, secure, and compliant with regulations like PCI-DSS. Any downtime or security breach directly impacts revenue and customer trust.
My Approach
Designed serverless payment orchestration using AWS Lambda
Implemented PCI-DSS compliant data handling and encryption
Built event-driven transaction lifecycle management
Created real-time fraud detection integration
Established comprehensive audit logging and monitoring
Technologies Used
Impact & Results
Key Learnings
Building payment systems requires paranoid attention to security and reliability. Every design decision must consider failure modes and security implications.