Expedia interview questions

Hotel Reservation System Design

Design and implement an object-oriented hotel reservation system. The system should include classes for managing rooms, bookings, and customer data, with a focus on proper…

Companies: Expedia, Apple

Last reported Feb 2026

Design a web crawler

URL frontier, politeness, deduplication at scale, distributed workers, failure and trap handling.

Companies: Expedia, Amazon, Anthropic, Atlassian +7

bloom-filters · deduplication · distributed-workers · dns

Last reported Feb 2026

Design a Caching System for Multi-Core, Multi-Disk Systems

Design a distributed caching system that can handle high-throughput read/write operations across multiple cores and spinning disks while ensuring data durability and leveraging…

Companies: Expedia, Apple

Last reported Feb 2026

Maximal Square

Given an m×n binary matrix, find the area of the largest axis-aligned square submatrix that contains only '1's. This is a classic DP problem (m,n…

Companies: Expedia, eBay

Array · Dynamic Programming · Matrix

Last reported Jan 2026

Design Google Docs

Concurrent text editing: convergent edits, durable reconnect and replay, live cursor positions, and per-document fanout.

Companies: Expedia, Amazon, Asana, Bloomberg +6

concurrency · crdt · operational-transformation · presence

Last reported Jan 2026

Longest Substring Without Repeating Characters

Find the length of the longest contiguous substring that contains no repeated characters. This is a classic sliding-window / two-pointer problem where you track seen…

Companies: Expedia, Amazon, Apple, Autodesk +12

Hash Table · Sliding Window · String

Last reported Dec 2025

Describe a time when you had to coach someone

Companies: Expedia, Amazon, DoorDash, Etsy +2

Last reported Jul 2025

Describe your most impactful project

Companies: Expedia, Airbnb, Amazon, Anduril +22

Project Deep Dive

Last reported Jul 2025

Give me an example of a tough or critical piece of feedback you received.

Companies: Expedia, Airbnb, Amazon, Anthropic +14

Last reported Jul 2025

How did you build alignment on the project's goals?

How did you create a timeline for the project?

Companies: Expedia, Amazon, Atlassian, Meta +1

Last reported Jul 2025

Tell me about a project where the requirements were not clear or kept changing. How did you adapt and maintain productivity?

Companies: Expedia, Amazon, Apple, Bloomberg +11

Last reported Jul 2025

Tell me about a time when someone on your team was struggling and how you helped them

Companies: Expedia, Atlassian, DoorDash, Etsy +2

Last reported Jul 2025

Tell me about a time where you proactively proposed a change.

Companies: Expedia, Amazon, Google, Meta +4

Last reported Jul 2025

Tell me about a time you had to deal with underperformance

Companies: Expedia, DoorDash, GitHub, Google +5

Last reported Jul 2025

Tell me about the hardest feedback you've ever had to delivered

Companies: Expedia, Atlassian, DoorDash, Meta +1

Last reported Jul 2025

Tell me what went wrong on the project

Describe the project, its scope, actors, your role, the business problem, timeline, etc.

Companies: Expedia, DoorDash, Meta, Rubrik +2

Last reported Jul 2025

Walkthrough of a technical architecture of a project you have worked on, challenges faced and mitigation strategies

Describe the technical architecture of a project you have worked on. Discuss the challenges you faced and how you mitigated them.

Companies: Expedia, GitHub, Meta, Netflix +1

Last reported Jul 2025

What would you do if given the option to double or halve your team size?

What would you do if you are given an option to double your team size and cut your team size by half.

Companies: Expedia, DoorDash

Last reported Jul 2025

Beautiful Towers II

Choose heights within [1, maxHeights[i]] that form a mountain (nondecreasing to a single peak then nonincreasing) to maximize the total sum. Core challenge: for each…

Companies: Expedia, Bloomberg

Array · Monotonic Stack · Stack

Count Vowel Substrings of a String

Count the number of contiguous substrings that consist only of vowels and contain all five vowels (a, e, i, o, u) at least once. The…

Companies: Expedia, D. E. Shaw, Salesforce, Snowflake

Hash Table · String

Sliding Window Maximum

Given an integer array and a window size k, return the maximum value for each contiguous subarray (sliding window) as it moves one step to…

Companies: Expedia, Amazon, Bloomberg, D. E. Shaw +7

Array · Heap (Priority Queue) · Monotonic Queue · Queue

Two Sum

Given an array of integers and a target, return the indices of two distinct elements whose values sum to the target (exactly one valid solution…

Companies: Expedia, Amazon, Apple, Bloomberg +13

Array · Hash Table