E-commerce App Integration

I need three mobile apps integrated with my e-commerce website. The apps are for vendors, customers, and delivery personnel.

Apps Required:
1. Vendor App: [6AMMart Store App](https://codecanyon.net/item/6ammart-store-app/36772173)
2. Customer App: [6AMMart Multi-Vendor App](https://codecanyon.net/item/6ammart-multivendor-food-grocery-ecommerce-parcel-pharmacy-delivery-app-with-admin-website/36772112)
3. Deliveryman App: [6AMMart Delivery Man App](https://codecanyon.net/item/6ammart-delivery-man-app/36772148)

Integration Requirements:
- Integrate the three apps with the main website.
- Ensure all functionalities are seamless across platforms.
- Maintain data consistency and security.

Ideal Skills and Experience:
- Experience with mobile app integration
- Familiarity with e-commerce platforms
- Strong background in API development and management
- Knowledge of security protocols for data protection

Please provide a portfolio of similar work done. I need this completed within a month.