When a fast-growing burger restaurant in Gwalior approached us, their brief was deceptively simple: 'We want our own Swiggy, but with our brand.' What they actually needed was a complete food-tech platform — online ordering, real-time POS sync, a loyalty program, combo deals, student discounts, and a way to showcase a brand-new healthy menu line alongside their classic indulgent burgers. No template, no Shopify plugin, no off-the-shelf solution could deliver what they envisioned. We took full ownership of the product — from brand identity and UI/UX design through to backend architecture, payment integration, and production deployment.
The centrepiece of Burger Empire is the Dual Mode System. A single toggle in the header morphs the entire application — UI colour palette, typography, menu items, pricing, nutritional information, promotional banners, and even the tone of microcopy — between Classic Mode and Healthy Mode. Classic Mode uses a warm Mustard Yellow palette with Anton typography, bold food photography, and messaging around indulgence and flavour. Healthy Mode switches to Sage Green with Playfair Display, surfaces calorie counts, protein/fat/carb breakdowns, and nutrition badges on every menu item, and reframes the same dishes as guilt-free alternatives. The transition uses an 800ms theatrical animation powered by Framer Motion that feels delightful, not jarring. Under the hood, every menu item has dual data — classic and healthy variants with independent pricing, descriptions, and nutritional metadata — stored in a single Prisma model with a mode discriminator.
The backend is a multi-tenant NestJS API with Prisma on PostgreSQL, built on our Central Backend architecture so the same infrastructure serves multiple TechZunction clients. For Burger Empire specifically, we integrated PetPooja — the POS system already running in their physical store — via a bidirectional sync. Menu items, prices, taxes, and availability push from PetPooja into our database via webhooks, and confirmed orders push back to PetPooja so the kitchen receives them on their existing KOT (Kitchen Order Ticket) printer. This zero-friction integration was critical: the restaurant staff did not need to learn a new system or manually reconcile orders between online and in-store channels.
Payments run through Razorpay with UPI, cards, wallets, and netbanking, plus a COD (Cash on Delivery) fallback for users who prefer it. The order lifecycle is managed by a state machine — placed, confirmed, preparing, ready, out-for-delivery, delivered — with WhatsApp Business API notifications at each transition. We built a coin-based loyalty engine with tiered rewards (Bronze, Silver, Gold), a rewards catalog where users redeem coins for free items, a referral program (50 coins each for referrer and referee), and a Student Pass that auto-applies discounts at checkout after ID verification. The coupon engine supports percentage and flat discounts, minimum order thresholds, first-order exclusivity, and usage limits.
The frontend is Next.js 15 with React 19, Tailwind CSS 4, Zustand for state management, and Framer Motion for animations. The menu page supports 10+ category tabs with filters (Veg Only, Non-Veg, Bestseller, Under ₹100, Spicy, High Protein, Under 300 cal), a real-time search, and a sticky cart summary. Item detail modals show extra toppings with live price updates, and in Healthy Mode, a live nutrition calculator shows how calories, protein, fat, and carbs change as the user customises their meal. The mobile experience is fully responsive with bottom-sheet modals, swipeable carousels, and touch-optimised hit targets. Performance targets were 90+ Lighthouse scores and sub-2.5s LCP on 4G — both achieved.
We delivered 104 features across 13 modules — Auth & User Management, Menu, Cart, Orders, Addresses, Payments, Loyalty & Rewards, Coupons, Promotions, Referral Program, Admin Dashboard & Reports, System Settings, and PetPooja POS Integration — with 130+ API routes, 70+ pages, and 60+ components. The admin panel gives the restaurant owner full control over menu items, combo deals, promotional banners, coupon codes, order management, and analytics. CI/CD pipelines handle automated testing and zero-downtime deployments to Vercel, and the SEO foundation is optimised to rank above aggregators for local Gwalior burger queries. Burger Empire is not just a website — it is a full-stack food-tech platform that lets a local restaurant compete on experience with the largest players in Indian food delivery.