Comprehensive Website Feature Enhancement

I'm looking to upgrade my current website by adding a suite of new features. The high-priority features include:

- Automated Pricing Logic
- Payment Gateway Integrations
- VIP System (Order-Based + Paid Access)

Additionally, I require enhancements in several areas to improve overall functionality:

- Website Performance & UX Fixes
- Profit Tracking System
- Voucher System Upgrades
- Referral System (Gamified)
- Admin Dashboard Features
- Blog System Fixes
- Notifications & Search Option Fix
- Multilingual Ready with Country-Based Local Pricing (Payments only in INR/USDT)

Ideal Skills and Experience:
- Strong background in web development, particularly in integrating complex systems.
- Experience with payment gateways and multilingual site setups.
- Proven track record in improving website performance and user experience.
- Familiarity with creating and managing VIP or subscription-based access systems.

Please provide a detailed portfolio showcasing similar past projects.