Referral Earning Website Development

I need a website that facilitates a referral earning system.

Key Requirements:
- Implement a robust referral system (tiered rewards, cashback, or points-based)
- User actions to be rewarded (e.g., signing up new users, making purchases, sharing on social media)
- Design preferences (minimalistic, vibrant, or corporate)

Ideal skills and experience:
- Web development proficiency
- Experience with referral systems
- Strong design skills
- UX/UI design expertise

Please provide examples of similar work.