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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
Rippling logo
Rippling
Medium
Software EngineerSenior+

Which Project Are You Most Proud Of?

Tell me about the project you are most proud of. Explain why it matters to you, what you personally contributed, the difficult decisions, and the outc...

Behavioral & LeadershipProject Deep Dive
0
0
12 people solved
Nov 3, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Take Ownership Beyond Your Assigned Responsibilities

Tell me about a time you took ownership of something outside your assigned responsibilities. Explain why you acted, how you coordinated with the exist...

Behavioral & LeadershipOwnership & ExecutionConflict & Collaboration
1
0
21 people solved
Oct 24, 2026
Rippling logo
Rippling
Medium
Backend EngineerSenior+ Locked

Design a News Aggregator That Builds Personalized Feeds from Publisher APIs

System design question on building a news aggregator that polls many publisher APIs, stores only article metadata, and serves each user a paginated fe...

System DesignSearch & Feed SystemsAPI Integration & HTTP Clients
48
0
330 people solved
Sep 11, 2026
Mercor logo
Mercor
Medium
Software Engineer

The Worst Possible Sorting Algorithm and How to Enumerate Every Permutation

This is a verbal question from a technical screen with no coding. The interviewer asks for the worst sorting algorithm you can think of and its runnin...

Software Engineering FundamentalsSortingBacktracking & Recursion
5
0
89 people solved
Oct 10, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer

Design a Key-Value Store, From the Single-Node Storage Engine to Replication

Design a key-value store: clients store a value under a key, read the value for a key, and delete keys. The round reported only the topic, so settle w...

System DesignKey-Value StoresConsensus & Replication
6
0
53 people solved
Oct 1, 2026
Google logo
GoogleBloombergAmazon

Also asked at Amazon, Infosys, Meta, Apple, Microsoft, Meesho, Goldman Sachs, ServiceNow, TCS, TikTok, Careem, Toast, JPMorgan Chase, Sigmoid, Zoho, Visa

Medium
Software Engineer

Maximize Repeated One-Share Stock Trading Profit

Problem Find the maximum total profit from trading one stock across the daily prices. You may make as many purchases and sales as useful, but may hold...

Coding & AlgorithmsGreedy
6
1
44 people solved
eBay logo
eBay
Easy
Software Engineer

Explain How Public-Key Encryption Works and Why It Is Secure

Explain the theory behind public-key (asymmetric) encryption. Cover what the two keys are and who holds each, which key encrypts and which decrypts wh...

Software Engineering FundamentalsCryptography
2
0
17 people solved
Oct 28, 2026
Walmart Labs logo
Walmart Labs
Medium
Software Engineer

Debug a React Watch List Where Added Movies Never Appear

The React frontend section of a full-stack online assessment gives you a small movie website with a frontend and a backend. A signed-in user can add a...

Software Engineering FundamentalsDebuggingState Management
0
0
11 people solved
Nov 7, 2026
Pinterest logo
Pinterest
Hard
Software Engineer Locked

Design a Typeahead Service on an In-Memory Trie, Then Scale It Without New Services

Design a typeahead autocomplete service that starts at a modest scale using an in-memory keyword trie, then scale it out without adding external servi...

System DesignSearch & Feed SystemsPartitioning & Consistent Hashing
16
0
171 people solved
Sep 19, 2026
Waymo logo
Waymo
Medium
Data Scientist

Estimate Event Rates from Unequal-Probability Samples

Estimate Event Rates from Unequal-Probability Samples You have a population table of units and their known probabilities of being selected for inspect...

Statistics & MathSampling & Estimation
6
0
104 people solved
Sep 28, 2026
Optiver logo
Optiver
Hard
Software EngineerIntern

Design an Event-Driven CPU Overheat Controller

Design an Event-Driven CPU Overheat Controller Design an OverheatPreventionController that simulates multiple processor cores without physical sensors...

Software Engineering FundamentalsSimulation & State Machines
532
4
4984 people solved
Jul 2, 2026
MongoDB logo
MongoDB
Medium
Software Engineer

Evaluate Paths through a JSON Tree with Implicit Array Wildcards

A parsed JSON syntax tree is already available. Given a path as a vector of strings, return the matching values. Object steps look up a field name. Ar...

Coding & AlgorithmsTreesProgramming Languages
1
0
24 people solved
Oct 16, 2026
IBM logo
IBM
Medium
Product Manager

Behavioral: Making a Complex Topic Clear to a Non-Expert Stakeholder

Describe a situation where you had to make a complicated idea clear to a person with much less background in it than you had. How did you approach the...

Behavioral & LeadershipCommunication & Stakeholders
2
0
29 people solved
Oct 17, 2026
Capital One logo
Capital One
Medium
Software Engineer

Behavioral: Using AI Tools in Daily Engineering Work and to Improve Efficiency

In a behavioral round for a software engineering role, after several standard questions about past projects, the interviewer asks two questions about ...

Behavioral & LeadershipAI-Assisted Development
21
0
147 people solved
Sep 22, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Design coffee-shop card payments with tips and nightly batch settlement at scale

Design the payment system for coffee shops that take card payments at the counter. A customer's card is swiped for the purchase, the customer can add ...

System DesignPayments & LedgersDistributed Transactions & Idempotency
38
0
254 people solved
Sep 28, 2026
Reddit logo
Reddit
Medium
Software Engineer

Design an Agent for BigQuery Analysis

Design an agent that helps users work with BigQuery. Clarify the intended capabilities before choosing an architecture. Constraints and Clarifying Que...

System DesignAI AgentsApplication Security
2
0
21 people solved
Oct 25, 2026
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Microsoft, Confluent, Meta, DoorDash, Apple, Oracle, Uber, Citadel, Arcesium, eBay

Hard
Software Engineer

Complete a Uniquely Solvable Sudoku Board in Place

Problem Complete the empty cells of a 9-by-9 Sudoku board. Each row, each column, and each of the nine 3-by-3 boxes must contain every digit from 1 th...

Coding & AlgorithmsBacktracking & RecursionGrids & Matrices
1
0
33 people solved
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Order Tasks with Dependencies Using a Deterministic Topological Sort

Return the lexicographically smallest valid task order from a directed acyclic dependency graph, including disconnected and prerequisite-free tasks.

Coding & AlgorithmsGraphsHeaps & Priority Queues
63
0
728 people solved
Sep 17, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

What Matters to You in Your Next Job?

What aspects of a new job matter most to you? Explain your priorities, why they matter at this stage, and how you would evaluate whether an opportunit...

Behavioral & LeadershipMotivation & Fit
1
0
20 people solved
Oct 18, 2026
Google logo
GoogleAmazonAirbnb

Also asked at Airbnb, Capital One, Hive, Meta, Robinhood, TikTok, Visa, Karat, Anyscale, Roblox, Uber, Atlassian, Microsoft, Sentry.Io, BCG

Hard
Software Engineer

Justify Greedy Lines to an Exact Width

Problem Format the nonempty array words into lines of exactly maxWidth characters. Keep the words in their given order and put as many words as possib...

Coding & AlgorithmsArrays & StringsGreedy
7
0
49 people solved
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