Finance & Banking·10 months · 2025

High-Throughput Payment Gateway for a Fintech Startup

5M+

Daily Transactions

99.999%

System Uptime

148ms

Average Latency

30+

Currencies Supported

The Challenge

PayStream needed a payment processing platform capable of handling millions of transactions per day across multiple currencies and payment methods, while maintaining PCI-DSS compliance and sub-200ms latency. Existing solutions couldn't meet their scale and customization requirements.

Our Solution

We engineered a microservices-based payment gateway with event-driven architecture, supporting 50+ payment methods across 30 currencies. The system processes up to 5 million transactions daily with 99.999% uptime and average latency under 150ms.

Technologies Used

GoNode.jsPostgreSQLRedisKafkaKubernetesAWSTerraform

“Devance built us a payment infrastructure that rivals the big players. The reliability and speed of our platform has become our biggest competitive advantage in the market.”

Alex Rodriguez

CEO, PayStream

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