Fintech

Real-Time Payment Platform for Fintech Startup

Industry: FintechTimeline: 4 monthsTeam: 6 engineers
ServicesPayment Gateway IntegrationPCI DSS ComplianceFraud Detection
The Challenge

What We Were Up Against

A Series A fintech startup needed to build a PCI DSS compliant payment platform from scratch. They had an aggressive go-to-market timeline, a small engineering team, and zero payment infrastructure. The platform needed to process ACH, card, and wire transfers from day one, with fraud scoring built in.

Our Approach

How We Solved It

We assembled a dedicated 6-person team and embedded a payment architect with deep PCI DSS experience. We chose a tokenization-first architecture using Stripe and Adyen as processing rails, with a custom routing layer that intelligently directs transactions based on cost, success rate, and latency. Fraud scoring was implemented using Stripe Radar augmented with custom velocity rules. We achieved PCI DSS SAQ-D compliance in month 3.

Key Results

The Numbers Don't Lie

$500K

Daily transaction volume at launch

99.5%

Payment success rate

PCI DSS

Certified at go-live

0.3%

Fraud rate (industry avg: 1.5%)

Technologies Used
Node.js
Stripe
Adyen
Redis
PostgreSQL
AWS Lambda
We went from zero payment infrastructure to PCI DSS certified and processing real transactions in 4 months. Techresol made it possible.
LC

Lisa Chen

VP Engineering, Fintech Startup