Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

18.6k

Companies

980

Updated

11.12.2026

18.6k Questions 980 Companies11.12.2026

PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

PLTCHK

_The_TaNk_

ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

Showing 20 results

Uber

Hard

Data Scientist

Model waiting-time abandonment via survival

Survival Modeling of Rider Abandonment During Pickup Waits Context You are modeling when a rider cancels (abandons) while waiting for pickup. Let time...

Statistics & MathRegression & Statistical Modeling

Software EngineerIntern

Reflect on learnings from prior co-op experience

Reflecting on your previous co-op or internship experience: 1. What are the most important things you learned about communication in a software team? ...

Behavioral & Leadership

Architecting a Video Calling Backend That Scales at Minimum Cost

You are asked to design the backend that powers a video calling product, in which people talk over live audio and video from their own devices. After ...

System DesignTechnical Tradeoffs for PMsReal-Time Systems

Implement classes in existing abstract hierarchy

You are given an existing Python codebase that defines multiple classes, including abstract base classes using abc.ABC and @abstractmethod decorators....

Coding & AlgorithmsLow-Level Design (OOP)Code Quality & Maintainability

Solve constrained monster traversal

Solve constrained monster traversal You are given a directed graph with n rooms labeled 0..n-1; each room i contains a monster with health hp[i] ≥ 0. ...

Coding & AlgorithmsGraphsBacktracking & Recursion

Designing a generative AI product to ease clinical documentation and medical note-taking

Medical transcription turns what clinicians say, whether a dictated note or a conversation with a patient, into written documentation in the patient's...

Product Design & StrategyAI Product ManagementMetrics & KPIs

On-Device vs Server Inference: Choosing Where an App's ML Model Runs at Scale

You are building an app that will serve millions of users and relies on a machine learning model. Would you run the model on your servers or on users'...

Machine LearningTechnical Tradeoffs for PMsMLOps & Model Serving

Present a Relevant Analytics Project to a Hiring Manager

Prepare a clear hiring-manager walkthrough of a real analytics project. Explain the decision, data grain, methods, validation, personal ownership, mea...

Behavioral & Leadership

Lead a zero-to-one initiative effectively

Take a Vague Mandate ("Improve Shopper Retention") from Idea to Launch Context You work in a two‑sided, on‑demand marketplace where "shoppers" are ind...

Behavioral & Leadership

Software Engineer Locked

Design a Driver Leaderboard Based on Reviews

Design a service that ranks drivers from customer reviews and serves a top-driver leaderboard. Connect requirements and APIs to data modeling, consist...

System Design

34 people solved

Jun 2, 2026

Implement range-sum tree and sort merged lists

Implement range-sum tree and sort merged lists 1) Given a binary tree whose nodes store integer values, and two integers low and high defining an incl...

Backend Engineer Locked

Deep-Dive a Distributed Service Project

Lead a technical deep dive into a distributed service project, connecting architecture and failure behavior to user goals, capacity, and measurable ou...

Behavioral & Leadership

Write SQL to rank categories by impressions

You are given the following schema and sample data. Today is 2025-09-01. Schema: - users(user_id INT, country_id VARCHAR) - countries(country_id VARCH...

Data Manipulation (SQL/Python)

51 people solved

Oct 13, 2025

Compute product of array except self

Given an integer array nums, return an array out where out[i] equals the product of all elements in nums except nums[i]. Do it in O(n) time using cons...

Compute Averages of Unique Numbers in Dictionary Lists

Scenario Python tech screen: given a dictionary mapping keys to numeric lists, e.g., {'a':[1,2,1],'b':[1,2,3]}, compute the average of each list after...

Software Engineer Locked

Reverse last two characters with space

This question evaluates basic string manipulation and character indexing skills, including handling of edge cases when treating input as a raw charact...

Coding & AlgorithmsArrays & Strings

Design a Real-Time Suggestions Service

Design a Real-Time Suggestions Service System Design: Real-Time Typeahead/Autocomplete Context Design a real-time typeahead/autocomplete service for a...

System DesignSearch & Feed SystemsCaching

Connected Door Lock as a Google Home Product: Users, Features and Metrics

Design a smart lock as a Google product. Decide who it is for, which problems it should solve, which features come first, and how you would know it su...

Product Design & StrategyProduct SensePrivacy & Compliance

Explain vanishing gradients and activations

Explain the vanishing gradient problem in deep neural networks. In your answer: - Describe how backpropagation works at a high level and why gradients...

Google Maps teardown: success drivers and your next product bet

This question has two parts about Google Maps: explain what made it succeed, then propose what you would build on top of it next. Clarifying Questions...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis

9 people solved

Jul 28, 2024

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Tech Interview Questions

Model waiting-time abandonment via survival

Reflect on learnings from prior co-op experience

Architecting a Video Calling Backend That Scales at Minimum Cost

Implement classes in existing abstract hierarchy

Solve constrained monster traversal

Designing a generative AI product to ease clinical documentation and medical note-taking

On-Device vs Server Inference: Choosing Where an App's ML Model Runs at Scale

Present a Relevant Analytics Project to a Hiring Manager

Lead a zero-to-one initiative effectively

Design a Driver Leaderboard Based on Reviews

Implement range-sum tree and sort merged lists

Deep-Dive a Distributed Service Project

Write SQL to rank categories by impressions

Compute product of array except self

Compute Averages of Unique Numbers in Dictionary Lists

Reverse last two characters with space

Design a Real-Time Suggestions Service

Connected Door Lock as a Google Home Product: Users, Features and Metrics

Explain vanishing gradients and activations

Google Maps teardown: success drivers and your next product bet

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