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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Grammarly logo
Grammarly
Medium
Software Engineer

Design a Figma-like collaborative editor

System Design: Collaborative design editor (Figma/Google Docs style) Design the backend (and key client interactions) for a real-time collaborative de...

System DesignReal-Time SystemsSystem Design Fundamentals
10
0
205 people solved
Feb 11, 2026
Optiver logo
Optiver
Medium
Software Engineer

Design a queue and analyze tradeoffs

Design a FIFO queue data structure that supports enqueue, dequeue, peek, and isEmpty. Compare implementations using a singly linked list, a dynamic ar...

Coding & AlgorithmsData Structure Design
55
0
462 people solved
Sep 6, 2025
Pinterest logo
Pinterest
Medium
Data ScientistSenior+ Locked

Size an Opportunity and Present It with Clear Visuals

Structure a data science case that sizes a business opportunity from partial information and presents it to senior decision-makers. Build top-down and...

Analytics & Experimentation
12
0
82 people solved
Jun 14, 2026
ByteDance logo
ByteDance
Medium
Software EngineerIntern

Enumerate All Simple Directed Cycles

Given a directed graph as an adjacency list, return every distinct simple directed cycle. For this practice version, a simple directed cycle follows d...

Coding & AlgorithmsGraphsBacktracking & Recursion
2
0
34 people solved
Aug 23, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Design a harmful video content moderation system

Question Design an end-to-end system to detect and moderate harmful videos on a large platform. Requirements - Detect multiple policy categories (viol...

ML System Design
11
0
227 people solved
Dec 15, 2025
Confluent logo
Confluent
Easy
Software Engineer Locked

Process pod logs with global increments and pop-min

This question evaluates understanding of data structures—particularly priority queues/heaps—and techniques for efficiently handling global/bulk update...

Coding & AlgorithmsHeaps & Priority Queues
21
0
244 people solved
Feb 12, 2026
Coinbase logo
Coinbase
Medium
Backend EngineerSenior+ Locked

Implement a Stateful Trading Order Manager

Build a stateful trading order manager with deterministic command results, lifecycle transitions, bulk cancellation, and live-order display. Assign us...

Coding & Algorithms
6
0
53 people solved
Jun 12, 2026
Meta logo
Meta
Medium
Backend Engineer AI Locked

Solve coding and AI-assisted tasks

This set evaluates algorithmic problem-solving across arrays, immutable linked-list interfaces, parent-pointer tree traversal, string validity via min...

Coding & AlgorithmsStacks & QueuesLinked Lists
18
0
138 people solved
Apr 8, 2026
Uber logo
Uber
Medium
Data Scientist

How to evaluate lowering ETA?

Uber wants to estimate the business value of reducing ETA, where ETA is the predicted time from when a rider requests a trip until the driver arrives ...

Analytics & ExperimentationMetrics & KPIsCausal Inference
20
0
137 people solved
Feb 1, 2026
Roblox logo
Roblox
Medium
Frontend Engineer Locked

Design a Reusable Dropdown Menu Component

This question assesses a candidate's ability to design a reusable, production-grade UI component, covering public API design, controlled versus uncont...

System Design
12
0
86 people solved
Jun 9, 2026
Fora Travel logo
Fora Travel
Medium
Software Engineer

Merge Sorted Arrays

You are given two related tasks about sorted integer arrays. 1. Implement a function that takes two arrays sorted in nondecreasing order and returns a...

Coding & Algorithms
11
0
84 people solved
Apr 6, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Debug a Machine Learning Pipeline

Debugging a Sudden Accuracy Drop in a Deployed ML Pipeline Context You are on-call for a production machine learning service. Monitoring alerts show t...

Machine LearningModel Monitoring & DriftDebugging
63
0
829 people solved
Aug 4, 2025
Gusto logo
Gusto
Medium
Data Scientist Locked

Compute Parking Clustering Probability and P-Value

This question evaluates combinatorial probability and hypothesis-testing skills, specifically counting-based calculation of exact probabilities under ...

Statistics & Math
5
0
78 people solved
May 27, 2026
Robinhood logo
Robinhood
Hard
Software Engineer

Explain Project Complexity and Scalability in a Deep Dive

Walk through a project you built and explain its technical complexity and scalability. Use a design diagram to make the important decisions and busine...

Behavioral & LeadershipProject Deep DiveSystem Design Fundamentals
3
0
35 people solved
Apr 14, 2026
Anthropic logo
Anthropic
Hard
Software Engineer

Reason About Delaying an AI Breakthrough Under Uncertain Risk

Suppose an AI project achieves a major breakthrough but important risks remain unknown. How would you decide whether to delay further progress or rele...

Behavioral & LeadershipEthics & ResponsibilityAmbiguity & Decision Making
1
0
25 people solved
Mar 30, 2026
Google logo
Google
Hard
Software Engineer

Design distributed transactions protocol

System Design: Distributed Transactions Across Multiple Services Context You must design a distributed transactions protocol to coordinate updates acr...

System DesignDistributed Transactions & IdempotencyFault Tolerance & Failover
19
0
128 people solved
Sep 6, 2025
Rippling logo
Rippling
Hard
Software Engineer

Design a Google News-like aggregator

Design a Google News–like News Aggregation Platform Design a multi-region news aggregation platform (in the spirit of Google News) that ingests conten...

System DesignData Ingestion & CDCSearch & Feed Systems
60
0
441 people solved
Sep 6, 2025
Harvey logo
Harvey
Hard
Software Engineer

Determine identical files ignoring metadata

Question How would you determine whether two files contain identical bytes while ignoring all filesystem metadata? Propose and justify a hashing-based...

System DesignFile & Media StorageCryptography
96
0
669 people solved
Sep 6, 2025
DoorDash logo
DoorDash
Hard
Software Engineer

Calculate Daily Driver Pay

You are given a one-day event log for a delivery driver. Each input record is a JSON event with fields such as order_id, event_type, timestamp, and ba...

Coding & AlgorithmsIntervals & SchedulingSimulation & State Machines
23
0
257 people solved
Feb 6, 2026
Harvey logo
Harvey
Hard
Software Engineer

Design a production file storage service

System Design: Production-Grade File Storage Service Problem Design a production-grade file storage service with the following APIs, semantics, and co...

System DesignFile & Media StorageStorage & Sharding
97
0
1051 people solved
Sep 6, 2025
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