Product Trading Portal Development

I'm looking for a developer to create a portal similar to Gumtree, facilitating easy connection between individuals for product trading.

Key Requirements:
- Connection fee integration for trading services
- User-friendly interface for browsing and trading items

Ideal Skills and Experience:
- Experience in developing trading or marketplace portals
- Proficiency in payment integration systems
- Strong UI/UX design skills
- Ability to implement secure user authentication and profiles