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Case study / Billing & POS
Game Center Billing & POS System
A custom application for billing, PC and console session tracking, inventory, snack sales, expenses, employee access and daily closing.
Independent Full-Stack Developer
Conceptual project visual01 / Overview
Business context
The game center needed one reliable application to manage time-based services, point-of-sale billing and daily operational records without relying on disconnected manual processes.
02 / Product workflow
Product workflow
- Created billing and POS flows for gaming sessions and snack sales.
- Added PC and console time tracking, receipt printing and daily closing.
- Built inventory, expense tracking, employee access and reporting workflows.
03 / Frontend
Frontend contribution
- Built the responsive React application and operational screens.
- Implemented role-specific workflows for administrator and manager users.
- Implemented interface updates for session timing and billing operations.
04 / Backend & database
Backend and database
- Developed REST APIs using Node.js and Express.js.
- Implemented JWT authentication and role-based access.
- Designed and integrated the MySQL database for core operational modules.
05 / Maintenance
Maintenance
- Supported feature changes and production bug fixes.
- Improved workflows based on operational feedback.
- Maintained the application as business requirements evolved.
06 / Outcomes
Outcome and impact
Unified billing, session tracking, sales and daily-closing workflows.
Reduced reliance on disconnected manual records.
Provided role-specific access for administrators and managers.
07 / Technology
Technology used
- React
- Node.js
- Express.js
- MySQL
- JWT
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