Influencer-Brand Marketplace Platform

I want to launch a web-based marketplace that works much like Freelancer, but it will cater exclusively to two user groups: influencers and brands. The flow is straightforward—brands post campaigns or one-off collaborations, influencers browse and bid, and both parties communicate through a built-in messaging system until a deal is struck.

Core features I need developed:
• User profiles for both influencers and brands, each with tailored fields (audience size, niches, past collaborations for influencers; campaign details and budget ranges for brands).
• A posting area where brands create projects and influencers can submit proposals or quotes.
• A real-time messaging system tied to each project so negotiations stay organized.

The build is web-only for now, so please focus your technical approach on a responsive front end and a secure, scalable back end. I’m open to the framework you prefer—common stacks like React + Node or Django + Vue are fine—as long as you outline why it suits a marketplace model and how you will handle user authentication, role separation, and data security.

Deliverables I expect:
1. Fully functional web application meeting the feature list above.
2. Clean, documented code in a public or private repo.
3. Basic admin dashboard or script so I can manage users and projects.
4. Deployment instructions (and, if you can, a live staging URL).

If you can demonstrate previous marketplace or social platform experience, that will help me decide quickly.