Readymade Multistore POS required on js framework with PostgreSQL/MongoDB for large stores

I am looking for a company/freelaner who has Readymade Multistore POS system on a js framework with PostgreSQL or any Multi Store POS which supports for large stores with the below features. The ideal candidate/company should have experience in handling customization of the following features:

*Admin Module*
Dashboard
Stores with Store List
Stores settings
Companies
Settings
Sales
Cancelled Sales
Manage Users

Reports
Account Receivable Aging Report
Account Receivable Aging Detailed Report
Account Payable Aging Report
Account Payable Aging Detailed Report
Financial Report
Trading Account
Inventory Stock
Sales Refund
CT Report
Sales
Credit Sales
Stock Transfer Report
Owners
Manage Tax Information
Manage online and offline
Groups

*store should have these features*
Open POS
Restaurant
Sales
Credit Management
Quotations
Coupons
Inventory
Suppliers
Customers
Store Settings
Reports
Expenses
Cancelled Sales
Manage Users
Owners
Manage Tax Information
Manage Synchronization
Groups

- Developing Multistore POS systems with all features related to inventory management and
- Integrating third-party software as well
- Proficient in PostgreSQL database system or any db to manage large amount of stores.

the project requirement as fellow
- The POS system should be capable of handling 500-1000 stores without hanging/loading/bugs
- The system should include inventory management and above features with online and offline sync like runtime socket programming sync.
- The system should be built using a js framework/nest.js/laravel and utilize PostgreSQL/ any store support as the preferred database system.

If you have the required skills and experience, please submit your proposal with relevant demo link with creds and timelines/quote. otherwise please dont bother to ask it from scratch otherwise i will report here