Community Forum & Marketplace Development

I'm seeking an experienced web developer to build a secure, scalable, and responsive community forum and marketplace platform. This platform should primarily focus on discussion and knowledge sharing within the community.

The platform will include the following core features:
- User registrations
- Discussion threads and posts
- Private messaging
- Marketplace section with:
- Listings
- Transactions
- User ratings and reviews
- Wishlist and notification system
- User roles should include Admins, Moderators, and Regular Users

You can choose any suitable tech stack — be it HTML/PHP, React.js, Next.js, or others. However, focus on:
- Clean, maintainable code and solid documentation
- User-friendly design
- Security and scalability

If you have experience building similar platforms, please share your portfolio and a brief overview of your approach.