POS Backend API (Golang)

Freelance ProjectBackend Developer

A robust and scalable backend RESTful API designed for a retail Point of Sale (POS) application, built with Go for high concurrency.

GolangFiberGORMMySQLJWT

Overview

A robust and scalable backend RESTful API designed for a retail Point of Sale (POS) application. Built with Go (Golang) for high concurrency and fast execution, this system handles everything from inventory management to transaction processing. It features a secure JWT-based authentication system, dynamic recipe-linked inventory tracking, and comprehensive sales reporting capabilities.

Impact

Engineered a high-performance backend architecture capable of handling concurrent transactions, resulting in zero downtime during simulated peak sales periods.

What i learned

I deepened my understanding of Go's concurrency model and learned how to design secure, scalable RESTful APIs using Fiber and JWT authentication.

Key Features

  • JWT Authentication & Role-Based Access Control
  • Menu & Product Management with Modifiers
  • Inventory & Recipe System Auto-Deduction
  • Secure Transaction Processing (Orders)
  • Expense Tracking & Sales Reporting Analytics

Gallery

POS Backend API (Golang) screenshot 1