FinTech Payment Gateway

Project Overview

PayFlow Technologies required a robust payment gateway capable of processing thousands of transactions per second with advanced fraud detection and PCI-DSS compliance.

Core Features

Payment Processing

• Multi-currency support (150+ currencies)


• Multiple payment methods (cards, wallets, bank transfers)


• Instant settlement or scheduled payouts


• Automatic currency conversion


• Transaction routing optimization

Security & Compliance



• PCI-DSS Level 1 certified infrastructure


• End-to-end encryption


• Tokenization for card storage


• 3D Secure authentication


• Real-time fraud detection with ML

Developer Experience



• RESTful and GraphQL APIs


• Comprehensive SDKs (10+ languages)


• Webhook notifications


• Testing sandbox environment


• Detailed API documentation

Technical Architecture

• High Performance: Go microservices for speed


• Scalability: Kubernetes for auto-scaling


• Reliability: 99.99% uptime SLA


• Data Pipeline: Apache Kafka for event streaming


• Caching: Redis for sub-millisecond responses

Results

• 10,000+ TPS (transactions per second)


• 99.9% fraud detection accuracy


• <100ms average response time


• 0.01% false positive rate


• $500M+ processed monthly