Multi-Tenant POS Web App Development

I'm looking for an experienced MERN stack developer to create a multi-tenant based POS web application for a subscription model.

Essential Features:
- Inventory Management
- Sales Reporting
- Customer Management

User Roles:
- Administrator
- Cashier
- Manager

Third-Party Integrations:
- Payment Gateways
- Accounting Software
- CRM Systems

Ideal Skills and Experience:
- Strong proficiency in MongoDB, Express.js, React.js, and Node.js
- Experience in building multi-tenant applications
- Familiarity with payment gateway integration
- Knowledge of accounting software and CRM system integration
- Strong problem-solving skills and attention to detail
- Ability to deliver high-quality work within budget and deadline

Please share your portfolio with similar projects. Looking forward to your bids!