Payments Replatforming

Modernized payments stack for high-volume fintech with PCI-compliant architecture.

FastPay Solutions Replatforming • Security • Payments 2020

Client

FastPay Solutions

Services

Replatforming, Security, Payments

Tech

Go, Kafka, Postgres, AWS

Year

2020

Team

Legacy monolithic payments stack struggled with throughput and compliance.

We replatformed services to a streaming architecture, hardened PCI controls, introduced dual-write reconciliation, and implemented chaos testing.

Transaction throughput increased 4x and compliance audits completed with zero major findings.

Duration

8 months

Team

9 engineers

Tech

Go, Kafka, Postgres…

Impact

4x throughput increase; PCI compliance achieved

4x throughput increase; PCI compliance achieved

“Their security-first approach allowed us to expand into new markets with confidence.”
— Head of Engineering, FastPay Solutions

Reduced infrastructure costs by 40% through strategic cloud migration.

Developed and launched an award-winning mobile app reaching 1M+ downloads.

Built ML models improving operational efficiency and customer satisfaction.