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POS payments merchants fintech Flutter encryption Socket.IO

ExtraMiles — POS & Merchant Apps

Flutter (Android)

Screenshots coming soon

About

Specialized POS and digital vault payment applications for ExtraMiles merchants and partners, enabling secure payment processing, transaction management, and loyalty verification at the counter.

My Role

Built merchant-facing POS terminals including Vaults Pay POS and Geidea POS apps. Implemented encrypted payment flows, real-time Socket.IO communication, and QR-based transaction verification.

Core Capabilities

Architecture

Tech Stack

Flutter Dart GetX Socket.IO AES Encryption Pointycastle QR Flutter ScreenUtil