Zomato Interview Questions & Answers 2026

Components: Restaurant index (Elasticsearch with geo-spatial), ranking model (relevance + distance + ratings + delivery time), personalization (cuisine preferences, past orders), real-time signals (open/closed, current ETA), filters (cuisine, price, ratings). Handle scale: 100K+ restaurants, millions of searches/day.

Factors: restaurant prep time (historical avg + current load), assignment time (delivery partner availability), travel time (distance + traffic + weather). Use ML regression model on historical data. Real-time updates as order progresses. Provide range not point estimate. Critical for customer satisfaction and Zomato's promise.

Classes: Restaurant, MenuItem, Cart, CartItem, Customizations, OfferEngine. Methods: addItem, removeItem, applyOffer, calculateTotal. Handle: item customizations (add-ons, removed items), quantity, taxes, packaging charges, delivery fee, offers/coupons. 90 minute round, focus on extensibility.

Subscription program with monthly/annual plans. Features: unlimited free deliveries above min order, exclusive deals at partner restaurants, 1+1 dine-in offers. Backend: subscription management (recurring billing), eligibility check at checkout, partner restaurant onboarding, offer redemption tracking, churn prediction.

Surge applies to delivery fee during high demand or limited supply. Factors: order volume in zone vs delivery partner availability, weather, peak meal times, special events. ML model predicts demand-supply imbalance, applies multiplier (1.5x, 2x). Communicates surge to customer transparently. Balances fairness with delivery partner earnings.

Approach 1: Sort and return arr[k-1]. Time O(n log n). Approach 2: Min-heap of size n, extract k times. Time O(n + k log n). Approach 3: QuickSelect (partition like quicksort, recurse on relevant side). Average O(n), worst O(n^2). Use QuickSelect with random pivot for production.

Use STAR method. Describe technical or business tradeoff (e.g., consistency vs availability, feature vs deadline). Discuss options considered, decision criteria, stakeholder alignment, decision made, and outcome. Zomato values pragmatic decision-making with customer at center.

Zomato is India's largest food-tech company with 18M+ monthly users. Mention their innovative culture (#shipfast values), full stack offering (food delivery, dining out, Hyperpure B2B, Blinkit quick commerce). Listed on NSE in 2021, profitable scaling. Strong product-engineering collaboration. Direct impact on millions of users daily.