Interview questions

927 questions

Explain malloc, calloc, and reelloc.

A production service started showing errors and timeouts after a deployment. How would you troubleshoot it?

System designSRE

Implement a function that processes a stream of interval data.

How would you rebuild one of your projects in a lower-level language to make it faster?

Design a high-level system for Gemini responding to a user query.

System designPM

Databricks1y ago

Design a distributed file system.

System designSWE

Design a smart shoe.

Explain how to find a target sum in an array.

Estimate the number of Gmail users in the US.

A leading Canadian grocery chain is considering opening its first store in Montreal. Should they? If yes, what should be the ratio of self-checkout kiosks to cashier counters?

If you had $1 billion, what would you build using generative AI?

Estimate the total dollar amount of online sales for fruits and vegetables per year in NYC.

Tell me about a time when you made a decision with limited data.

Given a list with response time for each server, calculate how long time it will take to process n requests.

Estimate the storage needs for Google Photos on Pixel phones.

YouTube's average video buffering time has increased by 10%. How would you address this issue?

What is DevOps?

Tell me about a time when you disagreed with Engineering.

Your largest customer is advocating for a new feature not in your roadmap. What do you do?

You're a PM for Gmail. Your team won a communications contract with a 10,000-person colony on Mars. Estimate the necessary network bandwidth.