Web-Based Inventory Management System

I'm looking for a web-based inventory management software. The system should support multiple user roles (Admin, Manager, User) with different permissions.

Key Requirements:

User Roles:
- Admin: Create and manage user accounts
- Manager: Generate all types of reports
- User: Create new products and customers, adjust product quantities

Functionalities:
- Admin can create users
- User can create new products and customers
- User can adjust product quantities based on purchases, sales, and adjustments

Reporting (Manager):
- Value of purchases (based on order price)
- Value of available inventory (based on selling price)
- Daily, weekly, monthly sales
- Expiry tracking
- Sales trend insights (fast-moving vs. slow-moving products)

Ideal Skills and Experience:
- Experience in developing web-based applications
- Strong understanding of inventory management principles
- Ability to implement role-based access control
- Proficient in generating comprehensive reports
- Familiarity with user interface design for ease of use

Please provide examples of similar projects completed. Thank you!