Como se preparar para entrevistas na Google

+15

Tell me about a time you had a conflict with a coworker. How did you resolve it?

+14

What project are you most proud of?

+10

Design a Job Scheduler

Design a distributed job scheduler that can handle high-throughput job processing (10,000+ jobs per second), support both scheduled (cron-based) and ad-hoc job execution, include retry mechanisms for failed jobs, and maintain execution history for up to one year.

+8

Design a Chat/Messaging System

Design a real-time messaging system like WhatsApp or Facebook Messenger that supports 1:1 and group conversations, message delivery status tracking, user presence features, conversation history, and can scale to handle millions of users.

+7

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

+7

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

+6

Tell me about a conflict you had at work.

The interviewer focused on a conflict that comes from different perspectives or ideas on how to execute a certain task.

+6

Design a Top-K System

Design a system that efficiently retrieves top-k items (songs, videos, hashtags, etc.) based on user activity or engagement metrics within specified time windows. The system should handle real-time data aggregation and support queries like "top 10 songs in the last 7 days" or "trending hashtags in the past 24 hours."

+5

Design a Metrics Aggregator

Design a metrics aggregation system that collects count-based metrics (like user signups, system errors, ad clicks) from services via a client library and displays them as histogram data on a dashboard. The system should support querying aggregated metrics within specific time frames for monitoring and analytics purposes.

+4

Give an example of a situation where you had to overcome a significant setback or obstacle to achieve a goal

+3

Tell me about a time where you mentored a colleague

+3

Leetcode 253. Meeting Rooms II

Given a list of meeting time intervals, determine the minimum number of conference rooms required so that no meetings overlap. The core challenge is computing the maximum number of concurrent intervals (e.g., via sorting with a min-heap of end times or a sweep-line of start/end events).

+3

Design a Ticket Booking System

Design a ticket booking system like Ticketmaster that handles high-traffic events, supports both seated and general admission tickets, and manages scenarios like flash sales with limited inventory and concurrent users.

+3

Leetcode 20. Valid Parentheses

Check whether a string of parentheses/brackets is valid by ensuring every closing bracket matches the most recent unmatched opening bracket and the types and nesting order are correct. This is typically solved by tracking openings (e.g., with a stack) and verifying matching pairs.

+2

Can you share an example where you resolved a significant conflict between different teams or departments in your organization?

+2

Design Uber

Design a ride-sharing service like Uber that allows users to request rides, matches them with nearby drivers, handles real-time tracking, and processes payments.

+1

Describe a challenging situation where a project or initiative under your leadership wasn't going as planned and how you persevered to overcome the situation.

+1

Discuss a time when you had conflicting perspectives with teammates and how you handled it

+1

Leetcode 347. Top K Frequent Elements

Given an integer array and k, return the k most frequent elements — the core challenge is to count element frequencies and extract the top-k efficiently (better than O(n log n)), typically using a frequency map combined with a min-heap (O(n log k)) or bucket sort (O(n)).

+1

Design Google Docs

Design a collaborative document editing service similar to Google Docs where multiple users can create, edit, and share documents in real-time with concurrent editing capabilities.

+1

Design Twitter

Design a social media platform similar to Twitter but incorporating Amazon-style product features such as product recommendations, shopping integration, or e-commerce functionality.

+1

Design a Distributed Cache System

Design a distributed caching system that can serve data with low latency across multiple geographic locations, handling cache misses, replication, and scaling to support billions of records.

+1

Design Netflix/Video Streaming Platform

Design a video streaming platform like Netflix that supports video playback across multiple devices (mobile, web, smart TVs) with seamless resume functionality, subscription management, personalized recommendations, and content upload capabilities.

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