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

NVIDIA

Medium

Software Engineer Locked

Design and implement an LRU cache

This question evaluates knowledge of data structures, algorithmic design, API design, and memory/resource management required to implement an efficien...

Coding & AlgorithmsData Structure DesignLinked Lists

Count subarrays with at least k fruit pairs

Given an integer array nums where each value denotes a fruit type, and an integer k: For any subarray, define a 'pair' for fruit value v if its freque...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings

155 people solved

Sep 6, 2025

Choose the Longest Set of Words with No Repeated Characters

Choose a subset of lowercase words whose concatenation contains no repeated characters, then maximize its total length. Account for words that contain...

Handle an irate passenger after flight delay

Role-Play: Irregular Operations Recovery and Communication Plan Scenario - A flight is delayed 5 hours due to a crew time-out cascading from weather a...

Behavioral & LeadershipCommunication & StakeholdersConflict & Collaboration

Spot US Market Gaps for a New Electric Vehicle Challenger to Tesla

Imagine you are founding a company that will take on Tesla in the United States. Identify the market opportunities you see: where Tesla leaves custome...

Product Design & StrategyMarket & Competitive AnalysisProduct Strategy

Solve four classic algorithm problems

You are given four independent coding tasks. For each task, implement the required function. --- Problem 1: Zigzag level-order traversal of a binary t...

Coding & AlgorithmsDynamic ProgrammingTrees

Review getEvents endpoint for readability, performance, scalability, security

Question You are given a code snippet that implements an HTTP GET /events handler (getEvents). The handler queries events from a database and, for eac...

System DesignCode Quality & MaintainabilityApplication Security

Software Engineer Locked

Find largest file in a directory using Bash

This question evaluates a candidate's proficiency with shell scripting and Unix command-line concepts, including recursive file-system traversal, reco...

Software Engineering Fundamentals

Data ScientistSenior+

Feed Module Impressions, Clicks and CTR on Web Platforms Over a 7-Day Window

A news portal's homepage is made of content modules, and a daily traffic table records how often each article was shown and clicked in each module on ...

Data Manipulation (SQL/Python)SQL

Sizing Revolut's Addressable Market: Users and Revenue Estimation (TAM, SAM, SOM)

Estimate the size of the market for Revolut, the app-based financial services company that offers accounts, cards, currency exchange and other money s...

Product / Decision MakingEstimation & Market Sizing

Implement bidirectional Dijkstra for shortest paths

Given a directed or undirected graph with non‑negative edge weights, design and implement bidirectional Dijkstra (“double Dijkstra”) to find the short...

Coding & AlgorithmsGraphsHeaps & Priority Queues

Design an IP blacklist API

Design an API and backend service for an IP firewall blacklist system. The service should allow security administrators or automated abuse-detection s...

System Design

48 people solved

Apr 23, 2026

Behavioral: Cross-Functional Disagreement and a Manager Conflict You Got Wrong

This is a behavioral round in a senior to staff-level software engineering loop. The interviewer asks about two conflicts with different power dynamic...

Behavioral & LeadershipConflict & CollaborationFailure & Learning

Compute BBO and NBBO from order data

You are given a list data of order records. Each record is a 4-tuple: ` (exchange_id, price, quantity, order_type) ` - exchange_id: string/int identif...

Coding & AlgorithmsData Structure Design

Explain SHAP in an ML System

Describe how you would build an end-to-end machine learning system for a business use case such as churn prediction, ad conversion prediction, or cont...

Machine LearningML System DesignModel Interpretability

Software Engineer Locked

Minimum Cells to Bridge a Magic Grid

This question evaluates proficiency in graph traversal and shortest-path optimization within a 2D grid, testing the ability to find minimum-cost conne...

Find most co‑purchased product pairs in SQL

Given the schema and sample data below, write ANSI-SQL to return the top 5 unordered product pairs most frequently purchased together across distinct ...

Data Manipulation (SQL/Python)SQLIndexing & Query Performance

Data Scientist Locked

Design robber detection from surveillance video

This question evaluates applied machine learning and computer vision system-design skills, including precise task definition, data and labeling strate...

Machine LearningML System DesignComputer Vision

Solve programming task with follow-ups

Question Pure programming problem solving: implement the core algorithmic solution, then extend it to ( 1) support a constraint of consecutive N eleme...

Implement a min-heap column allocator

You are given an integer k (number of columns) and an array posts of positive integers where posts[i] is the height of the i-th post. All columns star...

Coding & AlgorithmsHeaps & Priority QueuesData Structure Design

277 people solved

Sep 6, 2025

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Tech Interview Questions

Design and implement an LRU cache

Count subarrays with at least k fruit pairs

Choose the Longest Set of Words with No Repeated Characters

Handle an irate passenger after flight delay

Spot US Market Gaps for a New Electric Vehicle Challenger to Tesla

Solve four classic algorithm problems

Review getEvents endpoint for readability, performance, scalability, security

Find largest file in a directory using Bash

Feed Module Impressions, Clicks and CTR on Web Platforms Over a 7-Day Window

Sizing Revolut's Addressable Market: Users and Revenue Estimation (TAM, SAM, SOM)

Implement bidirectional Dijkstra for shortest paths

Design an IP blacklist API

Behavioral: Cross-Functional Disagreement and a Manager Conflict You Got Wrong

Compute BBO and NBBO from order data

Explain SHAP in an ML System

Minimum Cells to Bridge a Magic Grid

Find most co‑purchased product pairs in SQL

Design robber detection from surveillance video

Solve programming task with follow-ups

Implement a min-heap column allocator

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