Enterprise POS & Inventory Architecture

The constraint

Off-the-shelf SaaS POS systems lacked the specific relational database structures required for multi-branch stock transfers, leading to severe discrepancies and high per-terminal license costs.

The architecture

• Centralized cloud inventory mapped to multiple physical branches
• Socket-level integration with legacy thermal printers and barcode scanners
• Granular JWT-based permission roles for shift managers vs. cashiers
• Predictive gross-margin reporting and daily ledger synchronization
• Offline queue logic resolving transaction delays during connectivity drops

The outcome

A highly secure, IP-owned infrastructure that bypassed monthly SaaS fees while increasing terminal checkout speeds and eliminating cross-store stock inaccuracies.

Technical stack

Electron + React Native · NestJS + TypeScript · PostgreSQL · Secure Hardware Socket Drivers