Practice series
Geo, matching & dispatch
Nearby search, geospatial indexes, ride dispatch, profile matching, and regional scale.
- 01Preview
Spend Management System
Design a corporate spend management platform like Brex or Ramp — every card swipe must be authorized or declined against a live policy engine in under two secon...
Brex - 02Free
Tinder
Design Tinder — a location-based dating app with swipe feeds, mutual-match detection, and recommendation of nearby profiles.
Tinder - 03Free
Uber (Ride Hailing)
Design Uber — a ride-hailing platform matching riders to nearby drivers in real time, with live location tracking, pricing, and trip lifecycle management.
Uber - 04Preview
Yelp
Design Yelp — a local business search and review platform that returns nearby, filterable business results ranked by relevance and rating.
Yelp - 05Preview
ETA Prediction
Design an ETA prediction service that returns arrival-time estimates for millions of trips per second.
Uber - 06Preview
Stock Exchange
Design the core trading system of a stock exchange: accept orders into a central limit order book, match at price-time priority, and when your own book cannot c...
Practice bank - 07Preview
Food Delivery Marketplace
Design a DoorDash-style food delivery marketplace connecting consumers, Dashers, and merchants.
Uber