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

Snapchat

Hard

Machine Learning Engineer

Explain Bias and Variance in Model Generalization

Explain Bias and Variance in Model Generalization Explain the bias–variance tradeoff in machine learning. Use a supervised prediction setting of your ...

Machine LearningML FundamentalsModel Evaluation

Track Tic-Tac-Toe Winners across Valid Alternating Moves

Problem Implement TicTacToe(int n) and move(row,col,player). The two players alternate, always choose a previously empty valid cell, and stop after a ...

Coding & AlgorithmsData Structure DesignSimulation & State Machines

30 people solved

Anthropic

Medium

Software Engineer Locked

Design Peer-to-Peer Model Distribution Under a Shared Link Cap

Design peer-to-peer distribution of a large model from one seed to many targets when each machine shares a strict upload-and-download link budget. The...

System DesignFile & Media StorageFault Tolerance & Failover

Prompting an LLM to Migrate a Java Codebase to Python and Clean a Large Database

Your team wants to use a large language model (LLM) to speed up two pieces of data engineering work: 1. migrating an entire codebase from Java to Pyth...

Software Engineering FundamentalsAI-Assisted DevelopmentData Cleaning & Wrangling

Software EngineerSenior+ Locked

Design a Coffee-Shop Order-Management System

Design coffee-shop ordering with menu snapshots, order states, idempotent payment coordination, preparation queues, and recovery from partial failures...

System DesignSystem Design FundamentalsDistributed Transactions & Idempotency

Implement an In-Memory Database

Design and implement an in-memory database that stores records by key. Each record is a map from field to integer value. Implement the following funct...

Coding & AlgorithmsData Structure Design

Making the Case for Joining Scale AI as a Product Manager

You are interviewing for a product manager role at Scale AI, and the interviewer asks what draws you to the company. Give the answer you would deliver...

Behavioral & LeadershipMotivation & Fit

11 people solved

Oct 1, 2026

VisaSquarepointZomato

Hard

Software Engineer

Choose One Initial Infection to Remove from an Undirected Network

Problem In the undirected adjacency matrix graph, infection spreads across every edge until no further nodes can become infected. Remove exactly one n...

Coding & AlgorithmsGraphs

20 people solved

Bnsf

Medium

Software Engineer Locked

Minimize Car Removals for a Two-Car Bridge

Remove the fewest cars from a fixed-order queue so a two-car one-way bridge never exceeds its weight limit. Every retained car must fit alone, every a...

Capital One Product Strategy: The Business Case for Mobile Banking App Engagement

You are a product manager at Capital One, the US bank and credit card issuer. The interviewer asks you to explain how a customer who uses Capital One'...

Product Design & StrategyBusiness Case AnalysisCausal Inference

Find an Exit in a URL Maze

You are given a starting URL for a web-based maze. Each URL represents one room in the maze. Your task is to write a program that discovers whether th...

Coding & AlgorithmsGraphsAPI Integration & HTTP Clients

Bringing Customers Into Every Stage From Problem Discovery to Release

How do you keep customers involved across a product's life, from first discovering a problem through developing and shipping the solution? Walk throug...

Behavioral & LeadershipUser Research & DiscoveryRequirements & Launch Execution

Software Engineer Locked

Calculate Inventory Purchases with Buy-X-Get-Y-Free Coupons

Calculate exact-cent inventory totals with stock checks and a clearly defined buy-X-get-Y-free coupon, including partial groups and two-decimal output...

Coding & AlgorithmsMath & Number Theory

Implement a binary min-heap and use it to order courses with prerequisites

In one coding round of about 30 minutes, you are asked to write a heap yourself and then to use it in a variant of the course-scheduling problem. Cons...

Software Engineering FundamentalsHeaps & Priority QueuesGraphs

Software Engineer Locked

Implement Reduce and Derive Map and Filter from It

Explain reduce semantics, derive ordered map and filter with a reducer, and compose them over table rows while handling empty input and accumulator co...

Software Engineering FundamentalsProgramming Languages

63 people solved

Sep 13, 2026

GoogleAmazonMicrosoft

Medium

Software Engineer

Count Primes Strictly before an Integer Bound

Problem Return how many prime numbers are strictly smaller than n. A prime is an integer at least 2 whose only positive divisors are 1 and itself. Do ...

Coding & AlgorithmsMath & Number Theory

Group Strings Equivalent under Uniform Alphabet Shifts

Problem Group lowercase strings when shifting every letter by the same alphabet offset, with z-to-a wraparound, can transform one into the other. Retu...

Coding & AlgorithmsArrays & StringsMath & Number Theory

Why Google, Handling a Rejection, and What You Expect From a Manager

This is a behavioral ("Googlyness") round for a software engineering role at Google. The interviewer asked two questions, each with follow-ups. Clarif...

Behavioral & LeadershipMotivation & FitLeadership & Influence

Software Engineer Locked

Report Tree Levels and Balanced Subtrees

Implement describe_balanced_nodes(values) for a binary tree represented as a zero-based heap array. Work through the function contract, boundary cases...

Software Engineer Locked

Aggregate Downstream Services with Explicit Failure Policies

Aggregate downstream services with explicit required/optional policies, deadline budgets, bounded retries, partial responses, and safe handling of amb...

Software Engineering FundamentalsFault Tolerance & FailoverAPI Integration & HTTP Clients

134 people solved

Sep 10, 2026

Visa Tools

Visa Sponsors

H-1B Odds Calculator

Visa Bulletin

Tech Interview Questions

Explain Bias and Variance in Model Generalization

Track Tic-Tac-Toe Winners across Valid Alternating Moves

Design Peer-to-Peer Model Distribution Under a Shared Link Cap

Prompting an LLM to Migrate a Java Codebase to Python and Clean a Large Database

Design a Coffee-Shop Order-Management System

Implement an In-Memory Database

Making the Case for Joining Scale AI as a Product Manager

Choose One Initial Infection to Remove from an Undirected Network

Minimize Car Removals for a Two-Car Bridge

Capital One Product Strategy: The Business Case for Mobile Banking App Engagement

Find an Exit in a URL Maze

Bringing Customers Into Every Stage From Problem Discovery to Release

Calculate Inventory Purchases with Buy-X-Get-Y-Free Coupons

Implement a binary min-heap and use it to order courses with prerequisites

Implement Reduce and Derive Map and Filter from It

Count Primes Strictly before an Integer Bound

Group Strings Equivalent under Uniform Alphabet Shifts

Why Google, Handling a Rejection, and What You Expect From a Manager

Report Tree Levels and Balanced Subtrees

Aggregate Downstream Services with Explicit Failure Policies

Choose your next challenge

Blind 75

ML System Design

System Design Interview