Fintech Payment Gateway
A secure, PCI-compliant payment gateway with multi-currency support, real-time transaction monitoring, and an ML-based fraud detection layer that flagged suspicious patterns before charge-back.
The challenge
What we set out to solve
A B2B fintech startup needed a reliable payment infrastructure that could handle multi-currency transactions, comply with PCI-DSS, and reduce fraud without creating friction for legitimate payments.
Our approach
How we thought about it
We built a Stripe-integrated payment layer with idempotent charge endpoints, designed a fraud scoring microservice using transaction velocity patterns and device fingerprinting, and deployed the stack on AWS with multi-region failover.
What we built
The solution
PCI-DSS compliant payment gateway with multi-currency support, real-time fraud scoring, webhook reliability layer, and a merchant analytics portal.