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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
Harvey logo
Harvey
Medium
Software Engineer Locked

Evaluate Symbol Expressions

This question evaluates the ability to parse and evaluate arithmetic expressions with symbol references, perform recursive dependency resolution, and ...

Coding & Algorithms
10
1
135 people solved
May 2, 2026
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Find Optimal Property Combination

This question evaluates combinatorial optimization and algorithmic problem-solving skills, focusing on subset selection under capacity constraints and...

Coding & AlgorithmsDynamic Programming
7
1
108 people solved
May 26, 2026
Airbnb logo
Airbnb
Medium
Data Scientist Locked

Walk Through an Experiment From Design to Decision

Practice walking through an experiment from hypothesis and randomization to results and a launch recommendation. Cover primary metrics, guardrails, sa...

Analytics & ExperimentationProject Deep DiveExperiment Design (A/B Testing)
11
1
174 people solved
Jul 8, 2026
Capital One logo
Capital One
Medium
Software Engineer Locked

Sort Matrix Diagonals By Their Values

Practice a matrix diagonal sorting problem that scans bottom-left to top-right diagonals and returns indexes ordered by their diagonal strings. The pr...

Coding & Algorithms
13
1
94 people solved
Jul 7, 2026
Meta logo
Meta
Medium
Site Reliability EngineerSenior+

Troubleshoot a production server outage

You are the on-call engineer responsible for a production server for the next several days. Discuss how you would approach the following: - How would ...

Software Engineering FundamentalsReliability & SRE
39
0
331 people solved
Apr 12, 2026
Duolingo logo
Duolingo
Medium
Software EngineerIntern

Build a Resource Transition Probability Graph from Unsorted Access Logs

Given an unsorted list of web-resource access logs, build a directed transition graph and return the outgoing transition probabilities for each source...

Coding & AlgorithmsGraphsSorting
1
0
12 people solved
Jul 20, 2026
Hudson logo
Hudson
Medium
Software Engineer Locked

Compare Multithreading and Multiprocessing

Compare multithreading with multiprocessing and explain when each execution model is appropriate.

Software Engineering Fundamentals
3
0
26 people solved
Aug 30, 2026
Capital One logo
Capital One
Medium
Software Engineer Locked

Resolve Conflict and Set a Team Objective

Prepare two behavioral stories: resolving a meaningful workplace conflict and setting an actionable team objective. Strong answers show competing inte...

Behavioral & Leadership
12
0
92 people solved
Jul 4, 2026
MongoDB logo
MongoDB
Medium
Software Engineer Locked

Evaluate a Nested Predicate Expression Tree

Implement and explain evaluate(predicate, document) -> bool for a serialized predicate tree. Make the API or object boundaries explicit, then cover in...

Software Engineering Fundamentals
4
0
84 people solved
Jul 21, 2026
ByteDance logo
ByteDance
Medium
Software Engineer

Explain a Project's Implementation and Design Decisions

Choose a project from your experience and explain how you implemented it. Walk through the main components and the path of a representative request or...

Behavioral & LeadershipProject Deep DiveSystem Design Fundamentals
1
0
17 people solved
Sep 9, 2026
Glean logo
Glean
Medium
Software Engineer Locked

Restore an Array with One Displaced Element

Restore a nearly sorted array after at most one element was removed and reinserted elsewhere. The problem tests linear-time reasoning, constant auxili...

Coding & Algorithms
7
0
67 people solved
Jul 2, 2026
Amazon logo
Amazon
Medium
Software Engineer

Design a Checkout Price Engine with Pluggable Percent, Fixed and Buy-X-Get-Y Discounts

Build the checkout price engine for an e-commerce platform. Given a cart, compute the final price by applying discounts, and return the final total. -...

Software Engineering FundamentalsLow-Level Design (OOP)
0
0
8 people solved
Sep 10, 2026
Visa logo
Visa
Medium
Software EngineerNew Grad

Solve Three Array Coding Problems

An online assessment contains the following three independent coding problems. For each problem, write a function that returns the requested value. Us...

Coding & AlgorithmsArrays & StringsDynamic Programming
12
0
159 people solved
Apr 5, 2026
Salesforce logo
Salesforce
Medium
Software Engineer Locked

Delete One Character Type to Minimize Unique Segments

Choose one lowercase character value to remove everywhere, then minimize the number of ordered nonempty segments needed so that no segment repeats a c...

Coding & Algorithms
5
0
90 people solved
Jul 13, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Explain and Diagnose a Segmentation Fault

Explain how a segmentation fault arises from protected virtual-memory access and why the faulting instruction may be far removed from the original C++...

Software Engineering Fundamentals
7
0
67 people solved
May 15, 2026
Rillet logo
Rillet
Medium
Backend Engineer Locked

Distribute Annual Revenue Across Twelve Months

Allocate an annual revenue amount in cents evenly across twelve months without floating-point arithmetic. Preserve the total exactly and assign any re...

Coding & Algorithms
7
0
74 people solved
May 12, 2026
Hudson River Trading logo
Hudson River Trading
Hard
Software Engineer Locked

Reason About C++ Inlining, Allocation, and Polymorphism

This C++ systems interview question evaluates conceptual and practical understanding of inlining, memory allocation strategies, and static versus dyna...

Software Engineering Fundamentals
10
0
68 people solved
Jul 1, 2026
Netapp logo
Netapp
Medium
Software Engineer Locked

Merge Two Sorted Singly Linked Lists

Merge two nondecreasing singly linked lists by relinking existing nodes with constant auxiliary node storage, taking from the first list when current ...

Coding & Algorithms
3
0
25 people solved
Aug 9, 2026
Stripe logo
Stripe
Medium
Software EngineerIntern

Internship Hiring-Manager Behavioral: Project Roles, Deadlines, Mistakes, Motivation

This is a hiring-manager conversation for a software engineering internship. The interviewer works through a series of behavioral questions about your...

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
6
0
53 people solved
Dec 19, 2025
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design a Fault-Tolerant Video Generation Platform

Design a fault-tolerant asynchronous video-generation platform whose expensive stages may outlive leases or produce duplicate work. Cover durable job ...

System DesignJob Scheduling & WorkflowsDistributed Transactions & Idempotency
25
0
182 people solved
Jul 5, 2026
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