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

Google

Medium

Software Engineer

Proudest Project, Approach to Diversity and Sparking Colleagues' Creativity

A behavioral round for a software engineering role asked three questions: the project you are proudest of, how you approach diversity, and a hypotheti...

Behavioral & LeadershipProject Deep DiveInnovation & Simplification

Design API that aggregates three downstream APIs

You are given three existing HTTP JSON APIs owned by other backend services: - Service A: GET /service-a?user_id={id} → returns basic user profile dat...

System DesignAPI DesignFault Tolerance & Failover

Implement command-driven in-memory key-value database

Implement a command-driven in-memory key–value database. Supported commands (one per line): 1) SET key value 2) GET key → print value or NULL 3) DELET...

Coding & AlgorithmsData Structure Design

Choose Exactly k Ones, Zeros, and Negative Ones for the Greatest Sum

Problem A bag contains numOnes entries equal to 1, numZeros entries equal to 0, and numNegOnes entries equal to -1. Choose exactly k available entries...

Coding & AlgorithmsGreedyMath & Number Theory

Sum the Block Lengths That Permit Sorting by Rotation

Sum the Block Lengths That Permit Sorting by Rotation You are given an integer array nums of length n. A positive integer k is valid if k divides n an...

Coding & AlgorithmsArrays & StringsMath & Number Theory

Compute clock hand angle with seconds and milliseconds

You are given a time in the format "HH:MM", representing a 24-hour clock time with hours and minutes. Extend this to potentially include seconds and m...

Coding & AlgorithmsMath & Number Theory

Software Engineer Locked

Find shortest relationship path using BFS

This question evaluates proficiency in graph representations and traversal algorithms—specifically BFS and adjacency-structure construction—for comput...

Coding & AlgorithmsGraphs

Compute Top-K word frequencies under a path

Compute Top-K word frequencies under a path Given a filesystem path that may contain nested subdirectories and files, compute the top K most frequent ...

Coding & AlgorithmsHeaps & Priority QueuesBatch & Stream Processing

Implement BFS shortest path in grid

Implement a function that returns the length of the shortest path in an unweighted 2D grid from the top-left cell (0, 0) to the bottom-right cell (m-1...

Coding & Algorithms

129 people solved

Sep 6, 2025

Derive Linear Regression Solution

This question evaluates understanding of one-dimensional linear regression estimation, the statistical derivation of the mean squared error objective ...

Machine Learning

123 people solved

Feb 8, 2026

Count active follow connections

Question Write SQL to return the current number of active follow connections. Events table columns: user_id, target_id, event_type ('request_follow', ...

Data Manipulation (SQL/Python)

Choose a Maximum-Sum Ordered Subsequence

Problem Return a subsequence of nums containing exactly k entries with the greatest possible sum. A subsequence keeps the selected entries in their or...

Coding & AlgorithmsSortingGreedy

Design a Fault-Tolerant Wikipedia Archiver

Question Design a distributed system that archives all Wikipedia pages and keeps the archive current. You have one reliable primary machine, about one...

Zoom Product Strategy Against Suite-Bundled Rivals Such as Microsoft Teams

As Zoom's chief product officer, you face growing competition from Microsoft Teams and other rivals. What is your plan? `hint Find out why customers s...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis

Software EngineerSenior+

Senior Engineer Behavioral: Explaining Something You Learned Recently and Applied

In a behavioral interview for a senior software engineer role, you are asked to describe one thing you have learned recently. Choose something specifi...

Behavioral & Leadership

Machine Learning Engineer

Analyze vision model failures

For a computer vision product, discuss the following: 1. Explain the core machine learning fundamentals that matter most in vision work, including bia...

Machine LearningModel Monitoring & DriftML Fundamentals

Software Engineer Locked

Maximize Profit with One Stock Transaction

Implement max_profit(prices) for daily integer prices. Work through the function contract, boundary cases, correctness argument, and time and space co...

Software EngineerSenior+

Leading a Project That Went Off Track and Owning a Mistake You Made

In a conversation with the hiring manager, after an overview of what you do in your current role, you are asked about your experience. Two prompts anc...

Behavioral & LeadershipOwnership & ExecutionFailure & Learning

Minimum Swaps for Digit-Sum Order

Minimum Swaps for Digit-Sum Order You are given an array nums of distinct positive integers. Its required order is increasing decimal digit sum. When ...

Coding & AlgorithmsSortingArrays & Strings

6 people solved

Easy

Data Analyst

Compute percent of first-cancel users who never return

You’re analyzing appointment behavior for a scheduling product. Table appointments - appointment_id (STRING, PK) - user_id (STRING) - scheduled_start_...

Data Manipulation (SQL/Python)

70 people solved

Oct 26, 2025

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Tech Interview Questions

Proudest Project, Approach to Diversity and Sparking Colleagues' Creativity

Design API that aggregates three downstream APIs

Implement command-driven in-memory key-value database

Choose Exactly k Ones, Zeros, and Negative Ones for the Greatest Sum

Sum the Block Lengths That Permit Sorting by Rotation

Compute clock hand angle with seconds and milliseconds

Find shortest relationship path using BFS

Compute Top-K word frequencies under a path

Implement BFS shortest path in grid

Derive Linear Regression Solution

Count active follow connections

Choose a Maximum-Sum Ordered Subsequence

Design a Fault-Tolerant Wikipedia Archiver

Zoom Product Strategy Against Suite-Bundled Rivals Such as Microsoft Teams

Senior Engineer Behavioral: Explaining Something You Learned Recently and Applied

Analyze vision model failures

Maximize Profit with One Stock Transaction

Leading a Project That Went Off Track and Owning a Mistake You Made

Minimum Swaps for Digit-Sum Order

Compute percent of first-cancel users who never return

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