Design
Food Delivery App
Design a food delivery platform like Zomato or Swiggy — users order food from restaurants and get real-time delivery tracking.
This is a Low-Level Design (LLD) problem. New to LLD vs HLD? Start here.
01 - Why interviewers ask this
It's a multi-actor marketplace problem (customer, restaurant, courier) — interviewers use it to see if you can model three-sided state and matching logic without conflating the actors' responsibilities.
02 - Where this system exists in the real world
You interact with this design every day.
DoorDash / Swiggy / Zomato delivery platforms
Grocery and pharmacy delivery apps
Restaurant order-management integrations
03 - What you'll master
Solve this once. Know it forever.
Model a three-sided marketplace (customer/restaurant/courier)
Design order status state transitions
Implement delivery partner assignment logic
04 - What you'll design
7 functional · 4 non-functional requirements.
Users browse restaurants filtered by cuisine, rating, and delivery time
6 more requirements inside
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05 - Companies that ask this
You may face this exact question in your next interview.
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