Overview We are looking for an expert WordPress/WooCommerce developer to upgrade our existing content-heavy website (currently on Avada) into a high-performance e-commerce platform. The project involves complex backend logic for logistics, international pricing rules, frontend UI fixes, and a full theme migration. Detailed Scope of Work 1. Delivery & Payment Intelligence Dynamic Delivery Dates: Implement a real-time "Estimated Delivery Date" on the checkout page that triggers immediately upon PIN code entry. Must be easily adjustable via a backend settings panel. COD Logic: Restrict Cash on Delivery based on a specific CSV/Excel list of supported PIN codes. 2. International Regional Restrictions & Pricing Geographic Sales Rules: Prevent international customers from purchasing physical goods while allowing them to purchase "Downloadable/Digital" products. Dynamic Currency & Markup: Auto-detect international users to show prices in USD. Digital products must carry a 40% markup over the INR price (markup percentage must be configurable in the backend). 3. UI/UX & Frontend Optimization Cart Flow: Redesign the "Add to Cart" notification/popup. Currently, the page refreshes and shows a wide box; we require a modern, theme-consistent AJAX-based popup or side-cart to improve conversion. Mobile Slider Fix: Resolve a bug where the homepage slider disappears on mobile. Ensure the slider is 100% responsive and fills the mobile viewport correctly. Product Media: Add a native video upload/embed option for product galleries. 4. Tax & Invoice Compliance Pricing Display: Fix Variable Product display so taxes show as "Inclusive" on the product page (matching the checkout behavior). Invoice Customization: Modify the PDF invoice template to include GST breakdown, HSN codes, and all statutory order details. 5. Automation & Marketing Digital Fulfillment: Audit and ensure 100% reliability for E-book email delivery immediately post-purchase. Marketing Stack: Recommend and integrate a "one-stop" email automation solution (e.g., Klaviyo or Mailchimp) for welcome sequences and newsletters. 6. Theme Migration & Optimization Migration: Transition from the Avada theme to a faster, e-commerce-focused theme (e.g., WoodMart, Astra, or Flatsome) that balances our existing blog content with a new "Shop-First" homepage layout. Optimization: Ensure no data loss during migration and optimize for Core Web Vitals. Technical Requirements Deep expertise in WooCommerce Hooks & Filters. Proficiency in PHP, JavaScript (AJAX), and CSS. Experience with GeoIP location and currency switching logic. Proven track record of Theme Migrations without SEO/data loss. How to Apply Please start your proposal with the word "SYSTEMS" to prove you have read the requirements. Provide examples of WooCommerce sites where you have implemented custom PIN code logic or regional product restrictions.