Project Overview: I need a fast, smooth, and modern corporate website similar in structure and layout to: https://pavaigeotech.com/index.html The website must be built using: React.js (Frontend) Node.js + Express (Backend) MongoDB (if required) The website should be lightweight, performance optimized, and SEO friendly. Pages Required: Home About Services Projects / Portfolio Contact Core Requirements: Performance and Speed Optimized React production build Lazy loading implementation Clean and scalable code structure Lighthouse score 90+ Fast loading (under 2 seconds) WhatsApp Integration Floating WhatsApp button Pre-filled message option Fully responsive (desktop and mobile) SMS Integration When a user submits the contact form: Admin receives SMS notification Optional: User receives confirmation SMS Use Twilio / MSG91 / TextLocal or similar reliable provider Backend Features Secure contact form API Store inquiries in database Input validation and security Optional basic admin access panel SEO and Deployment SEO meta tags setup Sitemap generation SSL configuration Deployment on VPS / AWS / DigitalOcean Domain configuration Tech Stack Expected: React.js Node.js Express.js MongoDB REST API Fully responsive design Deliverables: Complete frontend and backend source code Working contact form with SMS integration WhatsApp integration Fully deployed live website Basic documentation for future updates Budget and Timeline: Timeline: 10 – 18 days