We need an experienced WordPress developer to build a custom multi-step dynamic calculator for Diesel Generators. This is NOT a basic form project. It requires backend pricing logic and structured data handling. Requirements: Multi-step form with progress bar Conditional logic between steps AJAX-based (no page reload) Real-time price estimation Convert Excel pricing formulas into backend logic Final lead capture form (store in WP + email notification) Mobile responsive and fast We will provide full Excel calculation data and pricing logic. Looking for: Strong WordPress + PHP + AJAX experience Experience building dynamic calculators Clean, scalable custom development (plugin-based preferred)