Airbnb Senior Software Engineer Interview Questions

1.Tell me about a time you pushed for a user experience improvement that required significantly more engineering effort than the quick fix. How did you make your case?

2.Tell me about a time you built something that you later realized excluded certain users. How did you discover this and what did you do about it?

3.Describe a feature or system you built that had to work well for users from very different cultural backgrounds or technical capabilities. What specific considerations did you make?

4.Tell me about the most challenging project you've delivered while working across multiple time zones. What made it difficult and how did you adapt your approach?

5.Walk me through a time when hosts and guests wanted completely opposite things from a feature you were building. How did you resolve that tension?

6.Describe the last time you saw a user struggling with something you built and decided to completely rethink your technical approach. What was broken and how did you fix it?

7.You're designing a feature that lets hosts block certain dates on their calendar. The product manager wants it to be instant, but you know our search index takes 5 minutes to update. How do you handle this?

8.Code a function that finds the optimal meeting location for an Airbnb team distributed across multiple cities. Given a list of team members with their coordinates, find the city that minimizes total travel time for everyone.

9.Our pricing recommendation service processes millions of listings daily through a Spark job that takes 8 hours to complete. Product wants real-time price suggestions. What's your approach?

10.You need to build a service that determines if a listing photo violates our content policy. It needs to handle 50,000 photo uploads per hour with sub-second response times. Walk me through your design.

11.Design a system to handle Airbnb's checkout flow during peak booking periods like New Year's Eve, when we see 10x normal traffic and payment failures spike due to external processor issues.

12.You're implementing a feature flag system for Airbnb's mobile apps across 220 countries. Some experiments need real-time updates, others need offline capability, and you need to handle different legal requirements per country. How do you architect this?

13.Design a search ranking system for Airbnb Stays that can handle 1 million searches per minute while personalizing results for each user's location, dates, and travel preferences.

14.You need to design a real-time messaging system for Airbnb that handles communication between hosts and guests across 220 countries, with offline message delivery and translation capabilities.

15.Design an availability calendar system that syncs booking data across Airbnb, external booking platforms, and property management systems while preventing double-bookings in real-time.

16.Build a dynamic pricing optimization service for Airbnb Experiences that adjusts prices based on demand forecasting, local events, weather, and competitor analysis across different activity categories.

17.Design a trust score system that evaluates new Airbnb hosts and listings in real-time using identity verification, property verification, and behavioral signals to determine initial search ranking and booking eligibility.

18.You're tasked with building a distributed event streaming system that captures every user interaction across Airbnb's platform and makes it available to 200+ internal services for real-time personalization, fraud detection, and analytics.

19.Tell me about a time you had to convince a group of engineers to adopt a solution that prioritized user experience over technical simplicity. How did you build consensus?

20.Describe a time you had to quickly rally people around an urgent technical decision during a crisis or outage. What was your approach?

21.Describe a time you identified a systemic issue that was affecting multiple teams but no one owned fixing it. How did you drive a solution?

22.Tell me about a time you had to lead a technical initiative when team members were scattered across different time zones and you couldn't rely on synchronous communication.

23.Walk me through a time when you disagreed with a product or design decision that would impact millions of users. How did you navigate that disagreement?

24.Tell me about a time you mentored someone from a different technical background or experience level than yours. What challenges did you face and how did you adapt your approach?

25.Estimate how many search queries Airbnb processes during a typical peak travel week like Christmas. Walk me through your assumptions and calculation.

26.We're seeing hosts abandon the listing creation flow at a 40% rate halfway through. What data would you need to diagnose this, and how would you prioritize your investigation?

27.Airbnb's mobile app crashes are up 15% month-over-month, but only in markets where we launched Experiences recently. How would you investigate and what's your hypothesis?

28.You need to estimate the revenue impact if Airbnb reduced search results from 20 listings per page to 15. What factors would you consider and how would you model this?

29.Airbnb wants to expand to a country where internet connectivity is unreliable and many hosts use basic smartphones. Estimate the engineering effort needed to make the host app work in this environment.

30.Our fraud detection system flags 3% of legitimate bookings as suspicious, costing us $50M annually in lost revenue. The ML team says improving accuracy requires 6 months. What's your approach to reduce this cost immediately?