5. Technical Architecture

5.1 Frontend & Mobile Apps

Cross-platform React Native mobile apps and a React web dashboard, built with encrypted local storage and secure session management.

5.2 Backend & Microservices

Containerized microservices (Kubernetes), stateless APIs for onboarding, payments, token logic, and analytics, with horizontal auto-scaling.

5.3 Blockchain Integration & Custody

NEXFI token on BNB Chain for low-cost transfers, with Fireblocks MPC custody. Fiat rails via Railsr and Airwallex integrations.

5.4 Security & Compliance

End-to-end AES-256 encryption, TLS everywhere, SOC-2 compliant infrastructure, real-time monitoring, and robust KYC/AML workflows via Sumsub.