Windows & Android POS System

I'm seeking a developer to create a POS software with a subscription-based model for my business.

Requirements:
- The software should be compatible with Android or Windows Desktop.
- I expect freelancers to submit examples of their previous work.
- Experience in developing POS software is highly preferred.

Responsibilities:
- Development of a user-friendly POS software.
- Integration of necessary features for a subscription-based model.
- Ensuring the software is bug-free and secure.

Ideal Skills:
- Proficiency in software development for Windows and Android.
- Previous work in the development of POS systems.
- Ability to integrate secure payment gateways.

Please provide examples of your past work in your application.