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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 testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

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

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

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

toa testimonial
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 testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

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

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

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

toa testimonial
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
OpenAI logo
OpenAI
Hard
Software Engineer

Design a Cloud DevBox Platform

Design a cloud DevBox platform: a service that gives developers disposable or persistent remote development machines, accessible through a browser, SS...

System DesignSystem Design FundamentalsSandboxing & Isolation
74
0
612 people solved
Apr 20, 2026
American Express logo
American Express
Medium
Product Manager

Go-to-Market and Phased Rollout Plan for Launching a New Washing Machine

You are interviewing for a product manager role, and with about five minutes left the interviewer asks how you would launch a washing machine and what...

Product Design & StrategyRequirements & Launch ExecutionGrowth & Monetization
0
0
9 people solved
Aug 27, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Design an ads event reporting system

This question evaluates a candidate's ability to design scalable, reliable event ingestion and analytics systems, testing competencies in distributed ...

System DesignAds SystemsData Ingestion & CDC
54
0
384 people solved
Jan 22, 2026
Oracle logo
Oracle
Medium
Software Engineer

Minimum number of rooms needed to hold overlapping meetings

You are given a list of meetings, each with a start time and an end time. A room can host at most one meeting at a time, and a meeting stays in the sa...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
2
0
16 people solved
Aug 1, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Design a Scalable Job Scheduler

Design an internal job scheduling platform for a large company. The platform lets internal services and engineers submit jobs that run at a specified ...

System DesignJob Scheduling & WorkflowsDistributed Coordination
68
1
513 people solved
Apr 8, 2026
Salesforce logo
SalesforceExpediaNVIDIA

Also asked at NVIDIA, Amazon, Bill.com

Medium
Software Engineer

Reduce Piles with Repeated Half Removals

Problem Perform exactly k operations on the stone piles. In each operation, choose any pile and remove floor(pileSize/2) stones from its current conte...

Coding & AlgorithmsHeaps & Priority QueuesGreedy
1
0
10 people solved
Ramp logo
Ramp
Medium
Software Engineer

Navigate maze via HTTP API

Question Implement a program that repeatedly calls a provided HTTP API which returns the next URL in a maze; continue following the URLs until reachin...

Coding & AlgorithmsAPI Integration & HTTP Clients
33
0
424 people solved
Jul 29, 2025
Intuit logo
Intuit
Medium
Staff Software EngineerSenior+ Locked

Design a VIP-Aware Rate Limiter

Design a windowed rate limiter that admits five users at a time and prioritizes waiting VIP requests at each new window. Preserve idempotency and non-...

Software Engineering Fundamentals
8
0
74 people solved
Aug 14, 2026
Hudson River Trading logo
Hudson River Trading
Hard
Software Engineer Locked

Explain C++ Inline, Segfaults, Virtual Memory, and std::string Internals

This Hudson River Trading software engineering question probes C++ fundamentals, virtual memory, segmentation faults, inline functions, and std::strin...

Software Engineering FundamentalsOperating SystemsMemory Management
11
0
180 people solved
Jul 2, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Implement cursor-based query pagination

You are building a small in-memory database that stores rows with the following fields: - id (string, unique) - score (integer) - payload (string) You...

Coding & AlgorithmsData Structure DesignAPI Design
47
0
335 people solved
Jan 22, 2026
Databricks logo
Databricks
Medium
Software Engineer

Design a generic key-value store

Design a Generic, Type-Safe Key-Value Store API Context You're asked to design a reusable key-value store with a generic, user-friendly API. The store...

System DesignKey-Value StoresConcurrency
51
0
543 people solved
Sep 6, 2025
Google logo
GoogleMetaAmazon

Also asked at Amazon, Microsoft, Bloomberg, IBM, TikTok

Easy
Software Engineer

Validate One Strict Rise Followed by One Strict Descent

Problem Return whether arr is a mountain: it has at least three values, rises strictly to one interior peak, then falls strictly to the end. Both the ...

Coding & AlgorithmsArrays & Strings
1
0
11 people solved
ByteDance logo
ByteDance
Medium
Software EngineerIntern Locked

Enumerate All Simple Directed Paths

Enumerate all simple directed paths between two vertices in a graph that may contain cycles, with deterministic output ordering.

Coding & AlgorithmsGraphsBacktracking & Recursion
1
0
26 people solved
Aug 23, 2026
eBay logo
eBay
Medium
Software Engineer Locked

Return the K Smallest Values from Sorted Arrays

Return the requested number of smallest values across multiple sorted arrays while preserving duplicates. The question evaluates frontier-based mergin...

Coding & Algorithms
5
0
52 people solved
Jul 26, 2026
Perplexity logo
Perplexity
Medium
Data Scientist Locked

Implement Stratified Sampling by Country

This question evaluates understanding of stratified sampling, proportional allocation across groups, reproducible random sampling, data grouping and e...

Coding & AlgorithmsSampling & Estimation
12
0
168 people solved
Apr 9, 2026
Netflix logo
Netflix
Medium
Machine Learning Engineer

Implement Streaming Word Counter

Implement a class that records word frequencies from a stream of text. The class should support the following operations: 1. add_text(text: str) -> No...

Coding & Algorithms
8
0
93 people solved
Apr 22, 2026
Mercor logo
Mercor
Medium
Software Engineer

Review a Hand-Rolled Python CSV Serializer for Correctness and Performance Bugs

You are reviewing this Python function, which is meant to turn a table (a list of rows, each row a list of cells) into CSV text: `python def to_csv(ta...

Software Engineering FundamentalsCode Quality & MaintainabilityParsing & Interpreters
2
0
43 people solved
May 31, 2026
xAI logo
xAI
Medium
Frontend Engineer Locked

Walk Through a Past Frontend Project: Problems Solved and Tech Stack Choices

A behavioral question from a project and product management round for a frontend role: describe a problem you hit on a past project and how you solved...

Behavioral & LeadershipProject Deep Dive
2
0
26 people solved
Sep 5, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Microsoft, Flipkart, Sprinklr

Hard
Software Engineer

Maximum Cherries Collected by Two Descending Robots

Problem Two robots start at(0,0) and(0,cols-1) of grid. Each step moves to the next row, changing its column by -1,0,or 1 while remaining inside the g...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
0
0
7 people solved
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Group Anagrams Without Sorted Character Signatures

Given an array of strings, group all words that are anagrams of one another. Two words are anagrams when every character occurs the same number of tim...

Coding & AlgorithmsArrays & Strings
11
0
74 people solved
Mar 18, 2026
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