B2B and B2C Mobile App Development

I'm looking for an experienced mobile app developer to create two applications, one for B2B and another for B2C, available on both iOS and Android platforms.

B2B Application Core Functionalities:
- User management
- Product catalogue
- Order processing

B2C Application Core Functionalities:
- User registration and login
- Product browsing and search
- Payment gateway integration

Ideal Skills and Experience:
- Proven experience in developing mobile applications for both iOS and Android
- Strong knowledge of user management systems, product catalogues, and order processing
- Expertise in integrating payment gateways and implementing user registration/login features
- Familiarity with UI/UX design principles to ensure a seamless user experience
- Ability to deliver high-quality work within budget constraints

Please provide samples of your previous work, especially in similar domains. Looking forward to your bids!