Restaurant Influencer Collaboration Platform

I'm looking for an experienced web developer to create a web-based application that connects restaurant owners with content creators and influencers. The platform will utilize vouchers to facilitate collaboration and track sales conversions.

The system should include three main interfaces, each with specific features:

1. **Restaurant Owners Interface**
- Voucher Management: Create and manage vouchers
- Sales Tracking: Monitor sales conversions from vouchers
- Collaboration Requests: Receive and manage collaboration proposals from influencers

2. **Sellers/Influencers Interface**
- Voucher Redemption Tracking: Monitor vouchers redeemed
- Performance Analytics: Access metrics on their promotional effectiveness
- Collaboration Management: Manage ongoing collaborations

3. **Customers Interface**
- Voucher Browsing and Redemption: View and use vouchers
- Restaurant Reviews: Read and write reviews
- Influencer Profiles: Explore profiles of various influencers

4. **Admin Backend**
- Platform Management: Oversee all activities on the platform

Ideal skills and experience:
- Web Development (Frontend & Backend)
- Database Management
- Experience with voucher/coupon systems
- User-friendly UI/UX design
- Familiarity with analytics and tracking tools

Please provide examples of similar work done and an estimated timeline.